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id="social-redesign-work-container"><div class="upload-header"><h2 class="ds2-5-heading-sans-serif-xs">Uploads</h2></div><div class="documents-container backbone-social-profile-documents" style="width: 100%;"><div class="u-taCenter"></div><div class="profile--tab_content_container js-tab-pane tab-pane active" id="all"><div class="profile--tab_heading_container js-section-heading" data-section="Papers" id="Papers"><h3 class="profile--tab_heading_container">Papers by Igor Puchtel</h3></div><div class="js-work-strip profile--work_container" data-work-id="123874693"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" rel="nofollow" href="https://www.academia.edu/123874693/Platinum_Group_Elements"><img alt="Research paper thumbnail of Platinum Group Elements" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div 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</script> <div class="js-work-strip profile--work_container" data-work-id="111327454"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/111327454/The_coupled182W_142Nd_record_of_early_terrestrial_mantle_differentiation"><img alt="Research paper thumbnail of The coupled182W-142Nd record of early terrestrial mantle differentiation" class="work-thumbnail" src="https://attachments.academia-assets.com/108898927/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/111327454/The_coupled182W_142Nd_record_of_early_terrestrial_mantle_differentiation">The coupled182W-142Nd record of early terrestrial mantle differentiation</a></div><div class="wp-workCard_item"><span>Geochemistry, Geophysics, Geosystems</span><span>, 2016</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific re...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. 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L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="db44285a26012a563231f86bcf0ff7f4" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":108898927,"asset_id":111327454,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/108898927/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="111327454"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="111327454"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 111327454; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=111327454]").text(description); $(".js-view-count[data-work-id=111327454]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 111327454; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='111327454']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="97937993"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/97937993/Non_traditional_stable_isotopes_in_global_basalts_through_time_and_the_evolution_of_mantle_mineralogical_heterogeneity"><img alt="Research paper thumbnail of Non-traditional stable isotopes in global basalts through time and the evolution of mantle mineralogical heterogeneity" class="work-thumbnail" src="https://attachments.academia-assets.com/99425632/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/97937993/Non_traditional_stable_isotopes_in_global_basalts_through_time_and_the_evolution_of_mantle_mineralogical_heterogeneity">Non-traditional stable isotopes in global basalts through time and the evolution of mantle mineralogical heterogeneity</a></div><div class="wp-workCard_item"><span>Goldschmidt2022 abstracts</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">have exploited variations in mineraland redox-specific equilibrium fractionation effects to link ...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">have exploited variations in mineraland redox-specific equilibrium fractionation effects to link observed variations to source mineralogy and processes, such as partial melting, magmatic differentiation, and the tectonic recycling of surface material [e.g., 1-4]. In this presentation, we will review some examples of how novel stable isotope systems, such as Fe, can be used to place constraints on the mineralogy and chemistry of the mantle source regions of ocean island basalts (OIB), Archean metabasalts and komatiites, and what the implications of these findings are for the mineralogical evolution of the Earth's upper and lower mantles. We will also discuss recent studies exploiting quantitative combined phase equilibria and equilibrium melt isotope fractionation models [5-6] and the extent that these can be used to predict equilibrium stable isotope partitioning during upper mantle melting of enriched and depleted lithologies. Finally we will review new novel isotope constraints on OIB mantle source region mineralogical heteorogenity with implications for the nature of large low-shear velocity provinces and the preservation of geochemical heterogeneities within the mantle.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="461a76c676d748ad3c5797cf013542cc" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":99425632,"asset_id":97937993,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/99425632/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="97937993"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="97937993"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 97937993; 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These data are used to determine the W isotope composition of the lunar mantle, monitoring potential effects of meteoritic contamination and cosmic rays on W isotopes.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="77594569"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="77594569"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 77594569; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=77594569]").text(description); $(".js-view-count[data-work-id=77594569]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 77594569; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='77594569']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); 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</script> <div class="js-work-strip profile--work_container" data-work-id="77594568"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" rel="nofollow" href="https://www.academia.edu/77594568/Platinum_Group_Elements"><img alt="Research paper thumbnail of Platinum Group Elements" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" rel="nofollow" href="https://www.academia.edu/77594568/Platinum_Group_Elements">Platinum Group Elements</a></div><div class="wp-workCard_item"><span>Encyclopedia of Earth Sciences Series</span><span>, 2016</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="77594568"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="77594568"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 77594568; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=77594568]").text(description); $(".js-view-count[data-work-id=77594568]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 77594568; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='77594568']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=77594568]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":77594568,"title":"Platinum Group Elements","internal_url":"https://www.academia.edu/77594568/Platinum_Group_Elements","owner_id":8172347,"coauthors_can_edit":true,"owner":{"id":8172347,"first_name":"Igor","middle_initials":null,"last_name":"Puchtel","page_name":"IgorPuchtel","domain_name":"independent","created_at":"2014-01-10T03:54:53.767-08:00","display_name":"Igor Puchtel","url":"https://independent.academia.edu/IgorPuchtel"},"attachments":[]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="77594567"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/77594567/Further_Study_of_Os_and_Highly_Siderophile_Element_Systematics_of_Apollo_14_and_17_Impact_Melt_Rocks"><img alt="Research paper thumbnail of Further Study of Os and Highly Siderophile Element Systematics of Apollo 14 & 17 Impact Melt Rocks" class="work-thumbnail" src="https://attachments.academia-assets.com/84870026/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/77594567/Further_Study_of_Os_and_Highly_Siderophile_Element_Systematics_of_Apollo_14_and_17_Impact_Melt_Rocks">Further Study of Os and Highly Siderophile Element Systematics of Apollo 14 & 17 Impact Melt Rocks</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Introduction: We have continued study of the chemical nature of late accreted materials to the Ea...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Introduction: We have continued study of the chemical nature of late accreted materials to the Earth-Moon system by examining the highly sidero-phile elements (HSE: Ru, Pd, Re, Os, Ir, Pt) contained in lunar impact-melt rocks. The HSE contained in melt rocks were largely added to the Moon during the period of time from the origin of the lunar highlands crust (4.4-4.5 Ga) to the end of the late bombardment period (~3.9 Ga). These materials provide the only direct chemical link to the late accre-tionary period. The 187 Os/</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="0ee9c8bb89981a3cc8e31b7289b08a50" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":84870026,"asset_id":77594567,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/84870026/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="77594567"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="77594567"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 77594567; 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dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "0ee9c8bb89981a3cc8e31b7289b08a50" } } $('.js-work-strip[data-work-id=77594567]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":77594567,"title":"Further Study of Os and Highly Siderophile Element Systematics of Apollo 14 \u0026 17 Impact Melt Rocks","internal_url":"https://www.academia.edu/77594567/Further_Study_of_Os_and_Highly_Siderophile_Element_Systematics_of_Apollo_14_and_17_Impact_Melt_Rocks","owner_id":8172347,"coauthors_can_edit":true,"owner":{"id":8172347,"first_name":"Igor","middle_initials":null,"last_name":"Puchtel","page_name":"IgorPuchtel","domain_name":"independent","created_at":"2014-01-10T03:54:53.767-08:00","display_name":"Igor Puchtel","url":"https://independent.academia.edu/IgorPuchtel"},"attachments":[{"id":84870026,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/84870026/thumbnails/1.jpg","file_name":"1428.pdf","download_url":"https://www.academia.edu/attachments/84870026/download_file","bulk_download_file_name":"Further_Study_of_Os_and_Highly_Siderophi.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/84870026/1428-libre.pdf?1650913020=\u0026response-content-disposition=attachment%3B+filename%3DFurther_Study_of_Os_and_Highly_Siderophi.pdf\u0026Expires=1740576603\u0026Signature=DxQlgwVma-asS~X6ATwtn5Ce8r8SjFcZzEFcMeVjchEGsdDkfvDq5fPrnL5RG0vtMGpcrRiDciQ2AsUTJUbC09-BEnk6uAgML2~7Nvt4Hw-afgWf2FIlgde7yxT6NiJ7ScoDsuQbM~c9571pB0u-JwTdbBhEHwUfrJkfYSYadYrFtDUEF-V8Z9Jh6-kT9qaIC693kqwrUGmBWk7~6O~ukyF-orAvdVaLMrDEGS2RyKVGIqcwXf1EqZOMsyqeavB7pqnVaAEJ7qk70mT3fXYxzvw5q1EDbzZ4pDcMgs~V-GN06tv4N8cvB5ZC-eEqUnhaHnqljlMc2ckHNwYaVT5ItA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"},{"id":84870027,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/84870027/thumbnails/1.jpg","file_name":"1428.pdf","download_url":"https://www.academia.edu/attachments/84870027/download_file","bulk_download_file_name":"Further_Study_of_Os_and_Highly_Siderophi.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/84870027/1428-libre.pdf?1650913019=\u0026response-content-disposition=attachment%3B+filename%3DFurther_Study_of_Os_and_Highly_Siderophi.pdf\u0026Expires=1740576603\u0026Signature=H-ZrQtEh~nH3yt3xQyTRtP6TiIak8PO7pdYZ6A1q6P8PQNruIBaOKafWtASjJatqE9uMNVKw68Bm9ftCZp-AG14GrN54rKXdnb3awWBcAtdwGGlGWzZISFNhdK1KP9VrMkLGoCEquyKkQjnASO~LwVdepNSvAIQXDLc4F-Ab8GvMxeozI61yvYdk323BkhaaoyljXBnq3Pxt0hugmxMxoroucSbvL~t9U0gGoLe8G7yiJ~w5OTtyMC0e3Ehg6u~xLiw5l9~FElIzyjQaCq1m3UfFsHEDTjDpfH54V-mzuDAmBSHK-HRZB5TTXsI4GjEHfEOhOcDfdQtnORt8NoIp-w__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="77594566"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/77594566/Mixing_times_of_the_Archean_mantle_evidence_from_2_7_Ga_komatiites"><img alt="Research paper thumbnail of Mixing times of the Archean mantle : evidence from 2 . 7 Ga komatiites" class="work-thumbnail" src="https://attachments.academia-assets.com/84870025/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/77594566/Mixing_times_of_the_Archean_mantle_evidence_from_2_7_Ga_komatiites">Mixing times of the Archean mantle : evidence from 2 . 7 Ga komatiites</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Despite numerous high-precision Nd, Hf, W, and Os isotopic and HSE abundance data obtained for ea...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Despite numerous high-precision Nd, Hf, W, and Os isotopic and HSE abundance data obtained for early terrestrial rocks, many questions pertaining to the origin and timing of the primordial differentiation and mixing of the mantle are still open. Recent isotopic studies of Archean komatiites have shown that the terrestrial mantle remained poorly mixed until at least the end of the Archean [1-4]. We present new Nd, Hf, W, and Os isotopic and HSE abundance data for the Boston Creek (BK) komatiitic basalt lava flow in the 2.7 Ga Abitibi belt, Canada. This lava is characterized by strong depletions in heavy REE and Al, enrichment in light REE, and coupled initial 143Nd = +2.5±0.2 and 176Hf = +4.2±0.9, indicating derivation from a deep mantle source with time-integrated suprachondritic Sm/Nd and Lu/Hf ratios. The Boston Creek samples plot on the terrestrial Nd-Hf array suggesting minimal involvement of early magma ocean processes in the fractionation of lithophile trace elements in the BK...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="b8588140c924bd60347d6901da5834b0" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":84870025,"asset_id":77594566,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/84870025/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="77594566"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="77594566"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 77594566; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="77594565"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/77594565/Further_Study_of_187Os_188Os_and_Highly_Siderophile_Element_Systematics_of_Lunar_Impact_Melt_Rocks"><img alt="Research paper thumbnail of Further Study of 187Os/188Os and Highly Siderophile Element Systematics of Lunar Impact Melt Rocks" class="work-thumbnail" src="https://attachments.academia-assets.com/84870022/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/77594565/Further_Study_of_187Os_188Os_and_Highly_Siderophile_Element_Systematics_of_Lunar_Impact_Melt_Rocks">Further Study of 187Os/188Os and Highly Siderophile Element Systematics of Lunar Impact Melt Rocks</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Introduction: Lunar impact melt rocks may provide the only direct chemical link to the material o...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Introduction: Lunar impact melt rocks may provide the only direct chemical link to the material of the late accretionary period [1]. The 187 Os/ 188 Os ratios, coupled with ratios of other highly siderophile elements (HSE: Ru, Rh, Pd, Re, Os, Ir, Pt, Au) in impact melt breccias can be diagnostic for identifying the nature of the impactors. We have continued study of the chemical nature of late accreted materials to the Earth-Moon system by examining the HSE contained in lunar impact-melt rocks. Previously, we reported results for Apollo 14 and 17 impact melt rocks [2,3]. This year we report new results for additional Apollo 17 poikilitic (76215) and aphanitic (76215, 76255) impact melt rocks, with an emphasis on deciphering why fractions of previous aphanitic rocks provided complex results. We also report initial results for the lunar meteorite NWA482. The HSE in the Apollo 17 rocks were likely added at ~3.9 Ga from the impactor that formed the Serenitatis basin. The origin of NWA482 has been debated. It has a possible melt age of ~3.75 Ga. It has been speculated that it originated from the far side of the Moon [4] due to the lack of KREEP component. Samples: Both poikilitic and aphanitic melt rocks were collected from the Apollo 17 site. Poikilitic melt rocks were found primarily at Stations 6 & 7 (North Massif) and HSE data for these rocks have been previously reported [5]. The impact melt breccia 76215 is unique in containing metal globules, and metal and troilite crystals, rich in HSE. These were also studied using a laser ablation ICP-MS technique [6] before we digested the subsamples for the bulk analysis. Aphanitic melt rocks were found primarily at Stations 2 & 3 (South Massif). They vary widely in clast population, although on average they are richer in clasts than the poikilitic melt rocks. NWA482 is a crystalline impact melt breccia with highlands affinities [4]. The recrystallized matrix and the clast population are both highly anorthositic. The latter include plagioclase crystals and lithic anorthosites and troctolites. Analytical Methods: Analytical details were similar to those reported previously. Un-ground 50-300 mg subsamples of each rock were digested in Pyrex Carius tubes at 270 o C for 96h. Substantially improved blanks averaged (pg): Ru 0.7, Pd 19, Re 0.9, Os 0.3, Ir 0.3, and Pt 52. The accuracy of all new concentration data is +0.5% or better. The same spikes and analytical techniques were used for gener</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="cf676b56b660bac9b570632a67030689" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":84870022,"asset_id":77594565,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/84870022/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="77594565"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="77594565"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 77594565; 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dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=77594564]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":77594564,"title":"The zirconium isotope composition of the mantle and upper continental crust through time","internal_url":"https://www.academia.edu/77594564/The_zirconium_isotope_composition_of_the_mantle_and_upper_continental_crust_through_time","owner_id":8172347,"coauthors_can_edit":true,"owner":{"id":8172347,"first_name":"Igor","middle_initials":null,"last_name":"Puchtel","page_name":"IgorPuchtel","domain_name":"independent","created_at":"2014-01-10T03:54:53.767-08:00","display_name":"Igor Puchtel","url":"https://independent.academia.edu/IgorPuchtel"},"attachments":[]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="77594563"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/77594563/Petrology_and_geochemistry_of_Yamato_984028_a_cumulate_lherzolitic_shergottite_with_affinities_to_Y_000027_Y_000047_and_Y_000097"><img alt="Research paper thumbnail of Petrology and geochemistry of Yamato 984028: a cumulate lherzolitic shergottite with affinities to Y 000027, Y 000047, and Y 000097" class="work-thumbnail" src="https://attachments.academia-assets.com/84918027/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/77594563/Petrology_and_geochemistry_of_Yamato_984028_a_cumulate_lherzolitic_shergottite_with_affinities_to_Y_000027_Y_000047_and_Y_000097">Petrology and geochemistry of Yamato 984028: a cumulate lherzolitic shergottite with affinities to Y 000027, Y 000047, and Y 000097</a></div><div class="wp-workCard_item"><span>Polar Science</span><span>, 2011</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">We report the petrography, mineral and whole-rock chemistry (major-, trace-, and highly-siderophi...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">We report the petrography, mineral and whole-rock chemistry (major-, trace-, and highly-siderophile element abundances, and osmium and oxygen isotope compositions) of a newly recognized lherzolitic shergottite, Yamato (Y) 984028. Oxygen isotopes (D 17 O ¼ 0.218&) confirm a martian origin for this meteorite. Three texturally distinctive internal zones and a partially devitrified fusion crust occur in the polished section of Y 984028 studied here. The zones include: 1) a poikilitic region with pyroxene enclosing olivine and chromite (Zone A); 2) a non-poikilitic zone with cumulate olivine, interstitial pyroxene, maskelynite and Tirich chromite (Zone B) and; 3) a monomict breccia (Zone C). The pyroxene oikocryst in Zone A is chemically zoned from Wo 3e7 En 76e71 in the core region to Wo 33e36 En 52e49 at the rim, and encloses more Mg-rich olivine (Fo 74e70) in the core, as compared with olivines (Fo 69e68) located at the oikocryst rim. Constraints from FeeMg partitioning between crystals and melt indicate that constituent minerals are not in equilibrium with the corresponding bulk-rock composition, implying that Y 984028 represents a cumulate. The whole-rock major-and trace-element compositions, and initial 187 Os/ 188 Os value (0.1281 AE 0.0002) of Y 984028 are similar to other lherzolitic shergottites and this sample is probably launch-paired with Y 793602, Y 000027, Y 000047, and Y 000097. The Os isotopic composition and highly-siderophile element (HSE) abundances of Y 984028 and other lherzolitic shergottites are consistent with derivation from a martian mantle source that evolved with chondritic Re/Os.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="3ac02d25042af2dd5b76db02a3433565" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":84918027,"asset_id":77594563,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/84918027/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="77594563"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="77594563"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 77594563; 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Application of Radiogenic Isotopes in Geosciences: Overview and Perspectives" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" rel="nofollow" href="https://www.academia.edu/77594562/CHAPTER_3_Application_of_Radiogenic_Isotopes_in_Geosciences_Overview_and_Perspectives">CHAPTER 3. Application of Radiogenic Isotopes in Geosciences: Overview and Perspectives</a></div><div class="wp-workCard_item"><span>Detection Science</span><span>, 2014</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Wider use of radiogenic isotopes in geosciences has been enabled by developments in massspectrome...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Wider use of radiogenic isotopes in geosciences has been enabled by developments in massspectrometry at the beginning of the 21st century. 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Application of Radiogenic Isotopes in Geosciences: Overview and Perspectives","internal_url":"https://www.academia.edu/77594562/CHAPTER_3_Application_of_Radiogenic_Isotopes_in_Geosciences_Overview_and_Perspectives","owner_id":8172347,"coauthors_can_edit":true,"owner":{"id":8172347,"first_name":"Igor","middle_initials":null,"last_name":"Puchtel","page_name":"IgorPuchtel","domain_name":"independent","created_at":"2014-01-10T03:54:53.767-08:00","display_name":"Igor Puchtel","url":"https://independent.academia.edu/IgorPuchtel"},"attachments":[]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="77594561"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/77594561/Radar_Enabled_Recovery_of_the_Sutters_Mill_Meteorite_a_Carbonaceous_Chondrite_Regolith_Breccia"><img alt="Research paper thumbnail of Radar-Enabled Recovery of the Sutter's Mill Meteorite, a Carbonaceous Chondrite Regolith Breccia" class="work-thumbnail" src="https://attachments.academia-assets.com/84918028/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/77594561/Radar_Enabled_Recovery_of_the_Sutters_Mill_Meteorite_a_Carbonaceous_Chondrite_Regolith_Breccia">Radar-Enabled Recovery of the Sutter's Mill Meteorite, a Carbonaceous Chondrite Regolith Breccia</a></div><div class="wp-workCard_item"><span>Science</span><span>, 2012</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The Meteor That Fell to Earth In April 2012, a meteor was witnessed over the Sierra Nevada Mounta...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The Meteor That Fell to Earth In April 2012, a meteor was witnessed over the Sierra Nevada Mountains in California. Jenniskens et al. (p. 1583 ) used a combination of photographic and video images of the fireball coupled with Doppler weather radar images to facilitate the rapid recovery of meteorite fragments. A comprehensive analysis of some of these fragments shows that the Sutter&#39;s Mill meteorite represents a new type of carbonaceous chondrite, a rare and primitive class of meteorites that contain clues to the origin and evolution of primitive materials in the solar system. 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="77594559"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" rel="nofollow" href="https://www.academia.edu/77594559/Insights_into_early_Earth_from_the_Pt_Re_Os_isotope_and_highly_siderophile_element_abundance_systematics_of_Barberton_komatiites"><img alt="Research paper thumbnail of Insights into early Earth from the Pt–Re–Os isotope and highly siderophile element abundance systematics of Barberton komatiites" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" rel="nofollow" href="https://www.academia.edu/77594559/Insights_into_early_Earth_from_the_Pt_Re_Os_isotope_and_highly_siderophile_element_abundance_systematics_of_Barberton_komatiites">Insights into early Earth from the Pt–Re–Os isotope and highly siderophile element abundance systematics of Barberton komatiites</a></div><div class="wp-workCard_item"><span>Geochimica et Cosmochimica Acta</span><span>, 2014</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">ABSTRACT Highly siderophile element (HSE: Os, Ir, Ru, Pt, Pd, and Re) abundance and Pt–Re–Os isot...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">ABSTRACT Highly siderophile element (HSE: Os, Ir, Ru, Pt, Pd, and Re) abundance and Pt–Re–Os isotopic data are reported for well-preserved komatiites from the Komati and Weltevreden Formations of the Barberton Greenstone Belt in South Africa. The Re–Os data for whole-rock samples and olivine and chromite separates define isochrons with ages of 3484 ± 38 and 3263 ± 12 Ma for the Komati and Weltevreden systems, respectively. The respective initial 187Os/188Os = 0.10335 ± 15 (γ187Os = +0.34 ± 0.15) and 0.10442 ± 4 (γ187Os = −0.14 ± 0.04) are well within the range defined by chondritic meteorites. When considered together with the Re–Os data for late Archean komatiite systems, these data indicate that the mantle sources of most Archean komatiites evolved with essentially uniform long-term Re/Os that is well within the chondritic range. By contrast, the initial 186Os/188Os = 0.1198283 ± 9 (ε186Os = −0.12 ± 0.08) and 0.1198330 ± 8 (ε186Os = +0.22 ± 0.07) for the Komati and Weltevreden systems, respectively, are outside of known chondritic evolution paths, indicating that the mantle sources of these two komatiite systems evolved with fractionated time-integrated Pt/Os. The new 186,187Os isotopic data for these early Archean komatiite systems, combined with published 142,143Nd and 176Hf isotopic data for these systems, are consistent with formation and long-term isolation of deep-seated mantle domains with fractionated time-integrated Sm/Nd, Lu/Hf, and Pt/Os ratios, at ca. 4400 Ma. These domains may have been generated as a result of late-stage crystallization of a primordial magma ocean involving Mg-perovskite, Ca-perovskite and Pt-alloys acting as the fractionating phases. The inferred fractionated mantle domains were sampled by the early Archean komatiites, but were largely mixed away by 2.7 Ga, as evidenced by uniform time-integrated Sm/Nd, Lu/Hf, and Pt/Os ratios inferred for the sources of most late Archean komatiite systems. The calculated total Pt + Pd abundances present in the sources of the early Archean komatiite systems fall only 7–14% short of those present in estimates for the modern primitive mantle. These are also within the range of the total Pt + Pd abundances present in the sources of late Archean komatiite systems, indicating little change in the HSE abundances in the Archean mantle between 3.5 and 2.7 Ga. The new HSE data for the early Archean komatiite systems may implicate late accretion of HSE to the mantle prior to completion of crystallization of a final terrestrial magma ocean, followed by sluggish mixing of diverse, post-magma ocean domains characterized by variably fractionated lithophile element and HSE abundances.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="77594559"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="77594559"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 77594559; 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</script> </div><div class="profile--tab_content_container js-tab-pane tab-pane" data-section-id="11975646" id="papers"><div class="js-work-strip profile--work_container" data-work-id="123874693"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" rel="nofollow" href="https://www.academia.edu/123874693/Platinum_Group_Elements"><img alt="Research paper thumbnail of Platinum Group Elements" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" rel="nofollow" href="https://www.academia.edu/123874693/Platinum_Group_Elements">Platinum Group Elements</a></div><div class="wp-workCard_item"><span>Encyclopedia of earth sciences</span><span>, 2018</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123874693"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123874693"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123874693; 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American Mineralogist, in press. (DOI will not work until issue is live.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="d8557fadb06823efeaf804319bd98f72" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118207707,"asset_id":123874692,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118207707/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123874692"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123874692"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123874692; 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</script> <div class="js-work-strip profile--work_container" data-work-id="111327454"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/111327454/The_coupled182W_142Nd_record_of_early_terrestrial_mantle_differentiation"><img alt="Research paper thumbnail of The coupled182W-142Nd record of early terrestrial mantle differentiation" class="work-thumbnail" src="https://attachments.academia-assets.com/108898927/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/111327454/The_coupled182W_142Nd_record_of_early_terrestrial_mantle_differentiation">The coupled182W-142Nd record of early terrestrial mantle differentiation</a></div><div class="wp-workCard_item"><span>Geochemistry, Geophysics, Geosystems</span><span>, 2016</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific re...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="97937993"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/97937993/Non_traditional_stable_isotopes_in_global_basalts_through_time_and_the_evolution_of_mantle_mineralogical_heterogeneity"><img alt="Research paper thumbnail of Non-traditional stable isotopes in global basalts through time and the evolution of mantle mineralogical heterogeneity" class="work-thumbnail" src="https://attachments.academia-assets.com/99425632/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/97937993/Non_traditional_stable_isotopes_in_global_basalts_through_time_and_the_evolution_of_mantle_mineralogical_heterogeneity">Non-traditional stable isotopes in global basalts through time and the evolution of mantle mineralogical heterogeneity</a></div><div class="wp-workCard_item"><span>Goldschmidt2022 abstracts</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">have exploited variations in mineraland redox-specific equilibrium fractionation effects to link ...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">have exploited variations in mineraland redox-specific equilibrium fractionation effects to link observed variations to source mineralogy and processes, such as partial melting, magmatic differentiation, and the tectonic recycling of surface material [e.g., 1-4]. In this presentation, we will review some examples of how novel stable isotope systems, such as Fe, can be used to place constraints on the mineralogy and chemistry of the mantle source regions of ocean island basalts (OIB), Archean metabasalts and komatiites, and what the implications of these findings are for the mineralogical evolution of the Earth's upper and lower mantles. We will also discuss recent studies exploiting quantitative combined phase equilibria and equilibrium melt isotope fractionation models [5-6] and the extent that these can be used to predict equilibrium stable isotope partitioning during upper mantle melting of enriched and depleted lithologies. Finally we will review new novel isotope constraints on OIB mantle source region mineralogical heteorogenity with implications for the nature of large low-shear velocity provinces and the preservation of geochemical heterogeneities within the mantle.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="461a76c676d748ad3c5797cf013542cc" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":99425632,"asset_id":97937993,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/99425632/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="97937993"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="97937993"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 97937993; 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These data are used to determine the W isotope composition of the lunar mantle, monitoring potential effects of meteoritic contamination and cosmic rays on W isotopes.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="77594569"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="77594569"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 77594569; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); 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</script> <div class="js-work-strip profile--work_container" data-work-id="77594568"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" rel="nofollow" href="https://www.academia.edu/77594568/Platinum_Group_Elements"><img alt="Research paper thumbnail of Platinum Group Elements" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" rel="nofollow" href="https://www.academia.edu/77594568/Platinum_Group_Elements">Platinum Group Elements</a></div><div class="wp-workCard_item"><span>Encyclopedia of Earth Sciences Series</span><span>, 2016</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="77594568"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="77594568"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 77594568; 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The HSE contained in melt rocks were largely added to the Moon during the period of time from the origin of the lunar highlands crust (4.4-4.5 Ga) to the end of the late bombardment period (~3.9 Ga). These materials provide the only direct chemical link to the late accre-tionary period. The 187 Os/</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="0ee9c8bb89981a3cc8e31b7289b08a50" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":84870026,"asset_id":77594567,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/84870026/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="77594567"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="77594567"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 77594567; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="77594566"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/77594566/Mixing_times_of_the_Archean_mantle_evidence_from_2_7_Ga_komatiites"><img alt="Research paper thumbnail of Mixing times of the Archean mantle : evidence from 2 . 7 Ga komatiites" class="work-thumbnail" src="https://attachments.academia-assets.com/84870025/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/77594566/Mixing_times_of_the_Archean_mantle_evidence_from_2_7_Ga_komatiites">Mixing times of the Archean mantle : evidence from 2 . 7 Ga komatiites</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Despite numerous high-precision Nd, Hf, W, and Os isotopic and HSE abundance data obtained for ea...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Despite numerous high-precision Nd, Hf, W, and Os isotopic and HSE abundance data obtained for early terrestrial rocks, many questions pertaining to the origin and timing of the primordial differentiation and mixing of the mantle are still open. Recent isotopic studies of Archean komatiites have shown that the terrestrial mantle remained poorly mixed until at least the end of the Archean [1-4]. We present new Nd, Hf, W, and Os isotopic and HSE abundance data for the Boston Creek (BK) komatiitic basalt lava flow in the 2.7 Ga Abitibi belt, Canada. This lava is characterized by strong depletions in heavy REE and Al, enrichment in light REE, and coupled initial 143Nd = +2.5±0.2 and 176Hf = +4.2±0.9, indicating derivation from a deep mantle source with time-integrated suprachondritic Sm/Nd and Lu/Hf ratios. The Boston Creek samples plot on the terrestrial Nd-Hf array suggesting minimal involvement of early magma ocean processes in the fractionation of lithophile trace elements in the BK...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="b8588140c924bd60347d6901da5834b0" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":84870025,"asset_id":77594566,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/84870025/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="77594566"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="77594566"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 77594566; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="77594565"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/77594565/Further_Study_of_187Os_188Os_and_Highly_Siderophile_Element_Systematics_of_Lunar_Impact_Melt_Rocks"><img alt="Research paper thumbnail of Further Study of 187Os/188Os and Highly Siderophile Element Systematics of Lunar Impact Melt Rocks" class="work-thumbnail" src="https://attachments.academia-assets.com/84870022/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/77594565/Further_Study_of_187Os_188Os_and_Highly_Siderophile_Element_Systematics_of_Lunar_Impact_Melt_Rocks">Further Study of 187Os/188Os and Highly Siderophile Element Systematics of Lunar Impact Melt Rocks</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Introduction: Lunar impact melt rocks may provide the only direct chemical link to the material o...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Introduction: Lunar impact melt rocks may provide the only direct chemical link to the material of the late accretionary period [1]. The 187 Os/ 188 Os ratios, coupled with ratios of other highly siderophile elements (HSE: Ru, Rh, Pd, Re, Os, Ir, Pt, Au) in impact melt breccias can be diagnostic for identifying the nature of the impactors. We have continued study of the chemical nature of late accreted materials to the Earth-Moon system by examining the HSE contained in lunar impact-melt rocks. Previously, we reported results for Apollo 14 and 17 impact melt rocks [2,3]. This year we report new results for additional Apollo 17 poikilitic (76215) and aphanitic (76215, 76255) impact melt rocks, with an emphasis on deciphering why fractions of previous aphanitic rocks provided complex results. We also report initial results for the lunar meteorite NWA482. The HSE in the Apollo 17 rocks were likely added at ~3.9 Ga from the impactor that formed the Serenitatis basin. The origin of NWA482 has been debated. It has a possible melt age of ~3.75 Ga. It has been speculated that it originated from the far side of the Moon [4] due to the lack of KREEP component. Samples: Both poikilitic and aphanitic melt rocks were collected from the Apollo 17 site. Poikilitic melt rocks were found primarily at Stations 6 & 7 (North Massif) and HSE data for these rocks have been previously reported [5]. The impact melt breccia 76215 is unique in containing metal globules, and metal and troilite crystals, rich in HSE. These were also studied using a laser ablation ICP-MS technique [6] before we digested the subsamples for the bulk analysis. Aphanitic melt rocks were found primarily at Stations 2 & 3 (South Massif). They vary widely in clast population, although on average they are richer in clasts than the poikilitic melt rocks. NWA482 is a crystalline impact melt breccia with highlands affinities [4]. The recrystallized matrix and the clast population are both highly anorthositic. The latter include plagioclase crystals and lithic anorthosites and troctolites. Analytical Methods: Analytical details were similar to those reported previously. Un-ground 50-300 mg subsamples of each rock were digested in Pyrex Carius tubes at 270 o C for 96h. Substantially improved blanks averaged (pg): Ru 0.7, Pd 19, Re 0.9, Os 0.3, Ir 0.3, and Pt 52. The accuracy of all new concentration data is +0.5% or better. The same spikes and analytical techniques were used for gener</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="cf676b56b660bac9b570632a67030689" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":84870022,"asset_id":77594565,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/84870022/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="77594565"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="77594565"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 77594565; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="77594564"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" rel="nofollow" href="https://www.academia.edu/77594564/The_zirconium_isotope_composition_of_the_mantle_and_upper_continental_crust_through_time"><img alt="Research paper thumbnail of The zirconium isotope composition of the mantle and upper continental crust through time" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" rel="nofollow" href="https://www.academia.edu/77594564/The_zirconium_isotope_composition_of_the_mantle_and_upper_continental_crust_through_time">The zirconium isotope composition of the mantle and upper continental crust through time</a></div><div class="wp-workCard_item"><span>Goldschmidt2021 abstracts</span><span>, 2021</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="77594564"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="77594564"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 77594564; 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dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=77594564]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":77594564,"title":"The zirconium isotope composition of the mantle and upper continental crust through time","internal_url":"https://www.academia.edu/77594564/The_zirconium_isotope_composition_of_the_mantle_and_upper_continental_crust_through_time","owner_id":8172347,"coauthors_can_edit":true,"owner":{"id":8172347,"first_name":"Igor","middle_initials":null,"last_name":"Puchtel","page_name":"IgorPuchtel","domain_name":"independent","created_at":"2014-01-10T03:54:53.767-08:00","display_name":"Igor Puchtel","url":"https://independent.academia.edu/IgorPuchtel"},"attachments":[]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="77594563"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/77594563/Petrology_and_geochemistry_of_Yamato_984028_a_cumulate_lherzolitic_shergottite_with_affinities_to_Y_000027_Y_000047_and_Y_000097"><img alt="Research paper thumbnail of Petrology and geochemistry of Yamato 984028: a cumulate lherzolitic shergottite with affinities to Y 000027, Y 000047, and Y 000097" class="work-thumbnail" src="https://attachments.academia-assets.com/84918027/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/77594563/Petrology_and_geochemistry_of_Yamato_984028_a_cumulate_lherzolitic_shergottite_with_affinities_to_Y_000027_Y_000047_and_Y_000097">Petrology and geochemistry of Yamato 984028: a cumulate lherzolitic shergottite with affinities to Y 000027, Y 000047, and Y 000097</a></div><div class="wp-workCard_item"><span>Polar Science</span><span>, 2011</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">We report the petrography, mineral and whole-rock chemistry (major-, trace-, and highly-siderophi...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">We report the petrography, mineral and whole-rock chemistry (major-, trace-, and highly-siderophile element abundances, and osmium and oxygen isotope compositions) of a newly recognized lherzolitic shergottite, Yamato (Y) 984028. Oxygen isotopes (D 17 O ¼ 0.218&) confirm a martian origin for this meteorite. Three texturally distinctive internal zones and a partially devitrified fusion crust occur in the polished section of Y 984028 studied here. The zones include: 1) a poikilitic region with pyroxene enclosing olivine and chromite (Zone A); 2) a non-poikilitic zone with cumulate olivine, interstitial pyroxene, maskelynite and Tirich chromite (Zone B) and; 3) a monomict breccia (Zone C). The pyroxene oikocryst in Zone A is chemically zoned from Wo 3e7 En 76e71 in the core region to Wo 33e36 En 52e49 at the rim, and encloses more Mg-rich olivine (Fo 74e70) in the core, as compared with olivines (Fo 69e68) located at the oikocryst rim. Constraints from FeeMg partitioning between crystals and melt indicate that constituent minerals are not in equilibrium with the corresponding bulk-rock composition, implying that Y 984028 represents a cumulate. The whole-rock major-and trace-element compositions, and initial 187 Os/ 188 Os value (0.1281 AE 0.0002) of Y 984028 are similar to other lherzolitic shergottites and this sample is probably launch-paired with Y 793602, Y 000027, Y 000047, and Y 000097. The Os isotopic composition and highly-siderophile element (HSE) abundances of Y 984028 and other lherzolitic shergottites are consistent with derivation from a martian mantle source that evolved with chondritic Re/Os.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="3ac02d25042af2dd5b76db02a3433565" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":84918027,"asset_id":77594563,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/84918027/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="77594563"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="77594563"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 77594563; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="77594562"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" rel="nofollow" href="https://www.academia.edu/77594562/CHAPTER_3_Application_of_Radiogenic_Isotopes_in_Geosciences_Overview_and_Perspectives"><img alt="Research paper thumbnail of CHAPTER 3. Application of Radiogenic Isotopes in Geosciences: Overview and Perspectives" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" rel="nofollow" href="https://www.academia.edu/77594562/CHAPTER_3_Application_of_Radiogenic_Isotopes_in_Geosciences_Overview_and_Perspectives">CHAPTER 3. Application of Radiogenic Isotopes in Geosciences: Overview and Perspectives</a></div><div class="wp-workCard_item"><span>Detection Science</span><span>, 2014</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Wider use of radiogenic isotopes in geosciences has been enabled by developments in massspectrome...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Wider use of radiogenic isotopes in geosciences has been enabled by developments in massspectrometry at the beginning of the 21st century. Nowadays, radiogenic isotope geochemistry forms an integrated part of geosciences in a range of applications, starting from formation of planetary systems, genesis, and the evolution of Earth&#39;s lithosphere and associated mineral and oil deposits, as well as environmental tracers. Two primary types of information are available from radiogenic isotopes studies: age determination and isotopic source tracing. In this chapter, the range of isotope systematics currently used in geosciences and their applications are reviewed, together with progress in analytical technologies. The chapter brings together internationally recognised researchers whohave been at the forefront of analytical technologies in the field of geochemistry of radiogenic isotopes.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="77594562"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="77594562"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 77594562; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=77594562]").text(description); $(".js-view-count[data-work-id=77594562]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 77594562; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='77594562']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=77594562]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":77594562,"title":"CHAPTER 3. Application of Radiogenic Isotopes in Geosciences: Overview and Perspectives","internal_url":"https://www.academia.edu/77594562/CHAPTER_3_Application_of_Radiogenic_Isotopes_in_Geosciences_Overview_and_Perspectives","owner_id":8172347,"coauthors_can_edit":true,"owner":{"id":8172347,"first_name":"Igor","middle_initials":null,"last_name":"Puchtel","page_name":"IgorPuchtel","domain_name":"independent","created_at":"2014-01-10T03:54:53.767-08:00","display_name":"Igor Puchtel","url":"https://independent.academia.edu/IgorPuchtel"},"attachments":[]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="77594561"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/77594561/Radar_Enabled_Recovery_of_the_Sutters_Mill_Meteorite_a_Carbonaceous_Chondrite_Regolith_Breccia"><img alt="Research paper thumbnail of Radar-Enabled Recovery of the Sutter's Mill Meteorite, a Carbonaceous Chondrite Regolith Breccia" class="work-thumbnail" src="https://attachments.academia-assets.com/84918028/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/77594561/Radar_Enabled_Recovery_of_the_Sutters_Mill_Meteorite_a_Carbonaceous_Chondrite_Regolith_Breccia">Radar-Enabled Recovery of the Sutter's Mill Meteorite, a Carbonaceous Chondrite Regolith Breccia</a></div><div class="wp-workCard_item"><span>Science</span><span>, 2012</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The Meteor That Fell to Earth In April 2012, a meteor was witnessed over the Sierra Nevada Mounta...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The Meteor That Fell to Earth In April 2012, a meteor was witnessed over the Sierra Nevada Mountains in California. Jenniskens et al. (p. 1583 ) used a combination of photographic and video images of the fireball coupled with Doppler weather radar images to facilitate the rapid recovery of meteorite fragments. A comprehensive analysis of some of these fragments shows that the Sutter&#39;s Mill meteorite represents a new type of carbonaceous chondrite, a rare and primitive class of meteorites that contain clues to the origin and evolution of primitive materials in the solar system. The unexpected and complex nature of the fragments suggests that the surfaces of C-class asteroids, the presumed parent bodies of carbonaceous chondrites, are more complex than previously assumed.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="96b654ad01f2e07fe45438681f7282d1" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":84918028,"asset_id":77594561,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/84918028/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="77594561"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="77594561"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 77594561; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="77594560"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" rel="nofollow" href="https://www.academia.edu/77594560/Petrology_and_geochemistry_of_crustally_contaminated_komatiitic_basalts_from_the_Vetreny_Belt_southeastern_Baltic_Shield_Evidence_for_an_early_Proterozoic_mantle_plume_beneath_rifted_Archean_continental_lithosphere"><img alt="Research paper thumbnail of Petrology and geochemistry of crustally contaminated komatiitic basalts from the Vetreny Belt, southeastern Baltic Shield: Evidence for an early Proterozoic mantle plume beneath rifted Archean continental lithosphere" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" rel="nofollow" href="https://www.academia.edu/77594560/Petrology_and_geochemistry_of_crustally_contaminated_komatiitic_basalts_from_the_Vetreny_Belt_southeastern_Baltic_Shield_Evidence_for_an_early_Proterozoic_mantle_plume_beneath_rifted_Archean_continental_lithosphere">Petrology and geochemistry of crustally contaminated komatiitic basalts from the Vetreny Belt, southeastern Baltic Shield: Evidence for an early Proterozoic mantle plume beneath rifted Archean continental lithosphere</a></div><div class="wp-workCard_item"><span>Geochimica et Cosmochimica Acta</span><span>, 1997</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">New isotope and trace element data are presented for komatiitic basalts and a related peridotite ...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">New isotope and trace element data are presented for komatiitic basalts and a related peridotite Vinela Dike from the large Vetreny Belt in the southeastern Baltic Shield. The MgO contents of the erupted and intruded magmas are inferred to increase from 13 to 17% towards the ...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="77594560"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="77594560"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 77594560; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=77594560]").text(description); 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="77594559"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" rel="nofollow" href="https://www.academia.edu/77594559/Insights_into_early_Earth_from_the_Pt_Re_Os_isotope_and_highly_siderophile_element_abundance_systematics_of_Barberton_komatiites"><img alt="Research paper thumbnail of Insights into early Earth from the Pt–Re–Os isotope and highly siderophile element abundance systematics of Barberton komatiites" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" rel="nofollow" href="https://www.academia.edu/77594559/Insights_into_early_Earth_from_the_Pt_Re_Os_isotope_and_highly_siderophile_element_abundance_systematics_of_Barberton_komatiites">Insights into early Earth from the Pt–Re–Os isotope and highly siderophile element abundance systematics of Barberton komatiites</a></div><div class="wp-workCard_item"><span>Geochimica et Cosmochimica Acta</span><span>, 2014</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">ABSTRACT Highly siderophile element (HSE: Os, Ir, Ru, Pt, Pd, and Re) abundance and Pt–Re–Os isot...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">ABSTRACT Highly siderophile element (HSE: Os, Ir, Ru, Pt, Pd, and Re) abundance and Pt–Re–Os isotopic data are reported for well-preserved komatiites from the Komati and Weltevreden Formations of the Barberton Greenstone Belt in South Africa. The Re–Os data for whole-rock samples and olivine and chromite separates define isochrons with ages of 3484 ± 38 and 3263 ± 12 Ma for the Komati and Weltevreden systems, respectively. The respective initial 187Os/188Os = 0.10335 ± 15 (γ187Os = +0.34 ± 0.15) and 0.10442 ± 4 (γ187Os = −0.14 ± 0.04) are well within the range defined by chondritic meteorites. When considered together with the Re–Os data for late Archean komatiite systems, these data indicate that the mantle sources of most Archean komatiites evolved with essentially uniform long-term Re/Os that is well within the chondritic range. By contrast, the initial 186Os/188Os = 0.1198283 ± 9 (ε186Os = −0.12 ± 0.08) and 0.1198330 ± 8 (ε186Os = +0.22 ± 0.07) for the Komati and Weltevreden systems, respectively, are outside of known chondritic evolution paths, indicating that the mantle sources of these two komatiite systems evolved with fractionated time-integrated Pt/Os. The new 186,187Os isotopic data for these early Archean komatiite systems, combined with published 142,143Nd and 176Hf isotopic data for these systems, are consistent with formation and long-term isolation of deep-seated mantle domains with fractionated time-integrated Sm/Nd, Lu/Hf, and Pt/Os ratios, at ca. 4400 Ma. These domains may have been generated as a result of late-stage crystallization of a primordial magma ocean involving Mg-perovskite, Ca-perovskite and Pt-alloys acting as the fractionating phases. The inferred fractionated mantle domains were sampled by the early Archean komatiites, but were largely mixed away by 2.7 Ga, as evidenced by uniform time-integrated Sm/Nd, Lu/Hf, and Pt/Os ratios inferred for the sources of most late Archean komatiite systems. The calculated total Pt + Pd abundances present in the sources of the early Archean komatiite systems fall only 7–14% short of those present in estimates for the modern primitive mantle. These are also within the range of the total Pt + Pd abundances present in the sources of late Archean komatiite systems, indicating little change in the HSE abundances in the Archean mantle between 3.5 and 2.7 Ga. The new HSE data for the early Archean komatiite systems may implicate late accretion of HSE to the mantle prior to completion of crystallization of a final terrestrial magma ocean, followed by sluggish mixing of diverse, post-magma ocean domains characterized by variably fractionated lithophile element and HSE abundances.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="77594559"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="77594559"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 77594559; 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