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AGU Blogosphere | Magma Cum Laude | Accretionary Wedge #41: Geology in progress

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width:655px; border-bottom: 1px #C4D5E3 dotted; height:40px; Xbackground-color:#ab0; "> <div style="float:left; height:35px; Xbackground-color:#005;"> <p><em>Posted by <a href="https://web.archive.org/web/20120112214023/http://blogs.agu.org/members/jessica-ball-aka-tuff-cookie/" title="Jessica Ball">Jessica Ball</a></em></p> </div> <div class="addthis_single" style="float:right; Xbackground-color:#f55; padding-top:6px; height:35px;"> <!-- AddThis Button BEGIN --> <div class="addthis_toolbox addthis_default_style"><a class="addthis_button_google_plusone" g:plusone:size="medium"></a> <a class="addthis_button_facebook_like" fb:like:layout="button_count"></a> <a class="addthis_button_tweet"></a> <a class="addthis_counter addthis_pill_style"></a> </div> <script type="text/javascript">var addthis_config = {"data_track_clickback":true};</script> <script type="text/javascript" src="https://web.archive.org/web/20120112214023js_/http://s7.addthis.com/js/250/addthis_widget.js#username=mjvinas"></script> <!-- AddThis Button END --> </div> <div style="clear:both;"></div> </div> <div class="entry" style="margin-top:15px;"> <p><a href="https://web.archive.org/web/20120112214023/http://ron.outcrop.org/blog/">Ron Schott</a> is hosting Accretionary Wedge #41, and he&#8217;s <a href="https://web.archive.org/web/20120112214023/http://ron.outcrop.org/blog/?p=1432">asking us to do a little reminiscing</a>:</p> <blockquote><p>Right, then. Your mission, should you choose to accept it, is to relate the story of <strong>the most memorable or significant geological event that you’ve directly experienced</strong>.</p> <p>What we seek for <strong>Accretionary</strong><strong>Wedge</strong> #41 is an account of a geologic event that you experienced firsthand. It could be an earthquake, a landslide, a flood, a volcanic eruption, etc. (but don’t feel compelled to stick to the biggies – weathering, anyone?) – some geologic process that you were able to directly observe and experience.</p></blockquote> <p>Because of my background, this pretty much means I get to chose from eruptions or earthquakes. I&#8217;ve gone on and on about my field area in Guatemala, so I&#8217;ll try to venture a little further afield for this Wedge. Two years ago, I went on a <a href="https://web.archive.org/web/20120112214023/http://blogs.agu.org/magmacumlaude/2009/07/30/italy-part-i/">field trip</a> with one of my professors and a couple of grad students, where we toured volcanoes in Southern Italy. It was a whirlwind trip &#8211; we went all the way down the &#8216;boot&#8217; and off it completely, visiting Vulcano, Etna and Stromboli before making our way back up to Vesuvius and the calderas around Rome. It was on Stromboli that I had a truly heart-stopping experience.</p> <p>At one time, hikers had been allowed to go to the top of Stromboli at will, but <a href="https://web.archive.org/web/20120112214023/http://www.swisseduc.ch/stromboli/volcano/accidents/index-en.html">several accidents</a> prompted the island&#8217;s authorities to limit summit visits to scientific teams and specific tour groups. We joined one of these tour groups for a forced-march hike to the summit of Stromboli (an experience that I don&#8217;t want to repeat &#8211; it would have been much nicer to take a more measured pace, but the tour guides were trying to get us up there in time for sunset so the lava would be glowing). When we reached the top, several of Stromboli&#8217;s vents were erupting with small bursts of incandescent lava. This is interpreted to be the result of &#8216;slugs&#8217; of gas rising to the top of a magma-filled conduit and bursting. When it&#8217;s dark, you can see a sort of intermittent spattering from these vents, with bright sprays of hot rock arcing into the air and collecting on the slopes.</p> <object width="604" height="370"> <param name="movie" value="http://www.youtube.com/v/YVTBpQiTm58?version=3&amp;rel=0&amp;fs=1&amp;showinfo=0"></param> <param name="wmode" value="opaque"></param> <param name="allowFullScreen" value="true"></param> <param name="allowScriptAccess" value="always"></param> <embed src="https://web.archive.org/web/20120112214023oe_/http://www.youtube.com/v/YVTBpQiTm58?version=3&amp;rel=0&amp;fs=1&amp;showinfo=0" type="application/x-shockwave-flash" wmode="opaque" allowscriptaccess="always" allowfullscreen="true" width="604" height="370"></embed> </object> <p>The bursts were usually small, but every so often there were larger ones. After about half an hour at the summit watching the lava spatter, the guides were getting ready to start herding us down the slopes of the volcano. And then there was one <em>huge</em> burst that sent lava high over our heads:</p> <object width="604" height="370"> <param name="movie" value="http://www.youtube.com/v/BE1Xbr-k2C8?version=3&amp;rel=0&amp;fs=1&amp;showinfo=0"></param> <param name="wmode" value="opaque"></param> <param name="allowFullScreen" value="true"></param> <param name="allowScriptAccess" value="always"></param> <embed src="https://web.archive.org/web/20120112214023oe_/http://www.youtube.com/v/BE1Xbr-k2C8?version=3&amp;rel=0&amp;fs=1&amp;showinfo=0" type="application/x-shockwave-flash" wmode="opaque" allowscriptaccess="always" allowfullscreen="true" width="604" height="370"></embed> </object> <p>(The video above is courtesy of one of my fellow UB graduate students, Sonja Melander, who you can hear exclaiming in excitement when the explosion happens. Thanks for the quick filming, Sonja!)</p> <p>That &#8216;fwoom&#8217; sound, and the instant jolt of adrenaline that I felt when I saw the molten lava <em>over my head</em>, will stay with me for a long time. It provoked a very visceral reaction of wanting to get the hell off the top of the volcano, because it wasn&#8217;t just erupting in the distance, it was erupting <em>right in front of me.</em> The guides, as well as the rest of the group, seemed to agree with this, because we were on our way downhill pretty quickly after that.</p> <p>I think this moment was when I really, really realized just how dangerous it can be to get that close to a volcano. Even in my field area, we had always been a relatively safe distance away &#8211; but here we were sitting on top of one that was erupting. It was a real kick in the gut, which I view as perfectly healthy and possibly life-saving, because forgetting that you can get hurt or killed by geologic processes is a very, very bad thing to do. Still, it was a particularly thrilling experience, and one that I&#8217;m not likely to forget for a long time.</p> <p>&nbsp;</p> <div class="mceTemp mceIEcenter"> <dl> <dt><a href="https://web.archive.org/web/20120112214023/http://blogs.agu.org/magmacumlaude/files/2011/12/DSC03730.jpg"><img class="size-large wp-image-1891" src="https://web.archive.org/web/20120112214023im_/http://blogs.agu.org/magmacumlaude/files/2011/12/DSC03730-1024x768.jpg" alt="" width="500" height="375"/></a></dt> <dd>I just managed to capture the explosion &#8211; one of my last photos from Stromboli&#8217;s summit!</dd> </dl> </div> <br class="clearfloat"/> </div> <p class="postmetadata">Posted in: <a href="https://web.archive.org/web/20120112214023/http://blogs.agu.org/magmacumlaude/category/uncategorized/" title="View all posts in Uncategorized" rel="category tag">Uncategorized</a> <span class="comments"> <a href="https://web.archive.org/web/20120112214023/http://blogs.agu.org/magmacumlaude/2011/12/21/1871/#comments" rel="nofollow" title="Comment on Accretionary Wedge #41: Geology in progress">1 Comment/Trackback &#187;</a> </span></p> </div> </div> <div class="navigation"> <div class="alignleft"> <a href="https://web.archive.org/web/20120112214023/http://blogs.agu.org/magmacumlaude/2011/12/16/agu-2011-days-4-5/" rel="prev">&larr; Previous Post</a> </div> <div class="alignright"> <a href="https://web.archive.org/web/20120112214023/http://blogs.agu.org/magmacumlaude/2011/12/28/talking-about-geoblogging-at-agu-2011/" rel="next">Next Post &rarr;</a> </div> <br class="clearfloat"/> </div> <div id="comments"> <h2>Comments</h2> <span class="title">Accretionary Wedge #41: Geology in progress</span> <h3 id="comments-title"> Comments</h3> <ol class="commentlist"> <li id="comment-2136"> <div class="comment-avatar-box"> <div class="avb"> <a href="" rel="nofollow"> <img alt="" src="https://web.archive.org/web/20120112214023im_/http://1.gravatar.com/avatar/3d0f2089a768bbd036214e78f67280a0?s=50&amp;d=http%3A%2F%2F1.gravatar.com%2Favatar%2Fad516503a11cd5ca435acc9bb6523536%3Fs%3D50&amp;r=G" class="avatar avatar-50 photo" height="50" width="50"/> </a> </div> </div> <div class="comment-content"> <div class="comment-meta"> <a href="" rel="nofollow">David</a> said: <em>On <a href="#comment-2136" title="">29 December 2011</a></em> </div> <p>The sound it made, my god that was awesome.</p> <div class="comment-options"> <a class="comment-reply-link" href="/web/20120112214023/http://blogs.agu.org/magmacumlaude/2011/12/21/1871/?replytocom=2136#respond" onclick="return addComment.moveForm(&quot;comment-2136&quot;, &quot;2136&quot;, &quot;respond&quot;, &quot;1871&quot;)">Reply</a> </div> </div> </li> </ol><!-- .comment-list --> </div><!-- #comments --> <div id="respond"> <div class="comment-avatar-box"> <div class="avb"> <img alt="" 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Her PhD research focuses on the interaction of water and lava domes, and involves both field investigations and modeling applications. Her blogging covers a range of topics, from life as a grad student to geoscience outreach to (of course!) her field and lab work in volcanology.</p> </div> </div><div id="blog-list" class="widget widget_myHelloWorld"><h3 class="widgettitle">Other AGU Blogs</h3> <ul class="bloglist"> <li> <p class="left"><img src="/web/20120112214023im_/http://blogs.agu.org/wp-content/themes/agu-buddypress/images/widget/bloglist/headshots_bloglist_squares_dan.png"/></p> <p class="right"><a href="https://web.archive.org/web/20120112214023/http://blogs.agu.org/wildwildscience/" class="more">Dan's Wild Wild Science Journal <span class="more-arrow">&gt;&gt;</span></a></p><div class="clear"></div> </li> <li> <p class="left"><img src="/web/20120112214023im_/http://blogs.agu.org/wp-content/themes/agu-buddypress/images/widget/bloglist/headshots_bloglist_squares_dave.png"/></p> <p class="right"><a href="https://web.archive.org/web/20120112214023/http://blogs.agu.org/landslideblog/" class="more">The Landslide Blog <span class="more-arrow">&gt;&gt;</span></a></p><div class="clear"></div> </li> <li> <p class="left"><img src="/web/20120112214023im_/http://blogs.agu.org/wp-content/themes/agu-buddypress/images/widget/bloglist/headshots_bloglist_squares_geo.png"/></p> <p class="right"><a href="https://web.archive.org/web/20120112214023/http://blogs.agu.org/geospace/" class="more">GeoSpace <span class="more-arrow">&gt;&gt;</span></a></p><div class="clear"></div> </li> <li> <p class="left"><img src="/web/20120112214023im_/http://blogs.agu.org/wp-content/themes/agu-buddypress/images/widget/bloglist/headshots_bloglist_squares_jess.png"/></p> <p class="right"><a href="https://web.archive.org/web/20120112214023/http://blogs.agu.org/magmacumlaude/" class="more">Magma Cum Laude <span class="more-arrow">&gt;&gt;</span></a></p><div class="clear"></div> </li> <li> <p class="left"><img src="/web/20120112214023im_/http://blogs.agu.org/wp-content/themes/agu-buddypress/images/widget/bloglist/headshots_bloglist_squares_Ryan.png"/></p> <p class="right"><a href="https://web.archive.org/web/20120112214023/http://blogs.agu.org/martianchronicles/" class="more">Martian Chronicles <span class="more-arrow">&gt;&gt;</span></a></p><div class="clear"></div> </li> <li> <p class="left"><img src="/web/20120112214023im_/http://blogs.agu.org/wp-content/themes/agu-buddypress/images/widget/bloglist/headshots_bloglist_squares_evelyn.jpg"/></p> <p class="right"><a href="https://web.archive.org/web/20120112214023/http://blogs.agu.org/georneys/" class="more">Georneys <span class="more-arrow">&gt;&gt;</span></a></p><div class="clear"></div> </li> <li> <p class="left"><img src="/web/20120112214023im_/http://blogs.agu.org/wp-content/themes/agu-buddypress/images/widget/bloglist/headshots_bloglist_squares_Callan.png"/></p> <p class="right"><a href="https://web.archive.org/web/20120112214023/http://blogs.agu.org/mountainbeltway/" class="more">Mountain Beltway <span class="more-arrow">&gt;&gt;</span></a></p><div class="clear"></div> </li> <li> <p class="left"><img src="/web/20120112214023im_/http://blogs.agu.org/wp-content/themes/agu-buddypress/images/widget/bloglist/headshots_bloglist_squares_plainspoken.png"/></p> <p class="right"><a href="https://web.archive.org/web/20120112214023/http://blogs.agu.org/sciencecommunication/" class="more">The Plainspoken Scientist <span class="more-arrow">&gt;&gt;</span></a></p><div class="clear"></div> </li> <li> <p class="left"><img src="/web/20120112214023im_/http://blogs.agu.org/wp-content/themes/agu-buddypress/images/widget/bloglist/headshots_bloglist_squares_josh.png"/></p> <p class="right"><a href="https://web.archive.org/web/20120112214023/http://blogs.agu.org/terracentral/" class="more">terra central <span class="more-arrow">&gt;&gt;</span></a></p><div class="clear"></div> </li> </ul> </div><div id="tabber_widget-3" class="widget tabber_widget"><h3 class="widgettitle">Quick Links</h3> <div id="tabber_widget-3-content" class="tabber-widget-0 tabber-widget-basic-dark"> <ul class="tabber-widget-tabs"> <li><a class="selected" href="#tab-tabber_widget-3-1">Latest</a></li> <li><a href="#tab-tabber_widget-3-2">Most Popular</a></li> <li><a href="#tab-tabber_widget-3-3">Recent Comments</a></li> </ul> <div id="tab-tabber_widget-3-1" class="tabber-widget-content"> <div class="tabber-widget widget_recent_entries" id="recent-posts-2"> <h5 class="tabber-widget-title">Latest</h5> <ul> <li><a href="https://web.archive.org/web/20120112214023/http://blogs.agu.org/magmacumlaude/2011/12/31/im-a-travelin-woman/" title="I’m a travelin’ (wo)man">I&#8217;m a travelin&#8217; 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href="https://web.archive.org/web/20120112214023/http://twitter.com/Tuff_Cookie/statuses/155389842107285505">6 January 2012</a></span><br/> <span class="twitter-text">@<a href="https://web.archive.org/web/20120112214023/http://twitter.com/aboutgeology">aboutgeology</a> @<a href="https://web.archive.org/web/20120112214023/http://twitter.com/rschott">rschott</a> @<a href="https://web.archive.org/web/20120112214023/http://twitter.com/callanbentley">callanbentley</a> Finally saw this, and I don't remember giving permission - they probably yanked from AGU. Ironic.</span> </li> <li> <span class="twitter-date"><a href="https://web.archive.org/web/20120112214023/http://twitter.com/Tuff_Cookie/statuses/154257730113253376">3 January 2012</a></span><br/> <span class="twitter-text">@<a href="https://web.archive.org/web/20120112214023/http://twitter.com/eruptionsblog">eruptionsblog</a> Also, vans tend to be easier to clean afterward.</span> </li> <li> <span class="twitter-date"><a href="https://web.archive.org/web/20120112214023/http://twitter.com/Tuff_Cookie/statuses/154257623896698881">3 January 2012</a></span><br/> <span class="twitter-text">@<a href="https://web.archive.org/web/20120112214023/http://twitter.com/eruptionsblog">eruptionsblog</a> Vans always have more space than SUVs, IME. SUVs have lots of unecessary padding and seats are often cramped. I'd go for vans</span> </li> <li> <span class="twitter-date"><a href="https://web.archive.org/web/20120112214023/http://twitter.com/Tuff_Cookie/statuses/153277340397469696">1 January 2012</a></span><br/> <span class="twitter-text">I’m a travelin’ (wo)man <a href="https://web.archive.org/web/20120112214023/http://t.co/YlSe1gdp">http://t.co/YlSe1gdp</a></span> </li> <li> <span class="twitter-date"><a href="https://web.archive.org/web/20120112214023/http://twitter.com/Tuff_Cookie/statuses/152763533325635585">30 December 2011</a></span><br/> <span class="twitter-text">@<a href="https://web.archive.org/web/20120112214023/http://twitter.com/helenasrox">helenasrox</a> Hooray for classic Trek!</span> </li> </ul> </div><div id="text-5" class="widget widget_text"> <div class="textwidget"><div id="networkedblogs_nwidget_container" style="height:360px;padding-top:10px;"><div id="networkedblogs_nwidget_above"></div><div id="networkedblogs_nwidget_widget" style="border:1px solid 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cape</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://blogs.wm.edu/author/cmbail/">Chuck Bailey&#039;s Blog at The College of William &amp; Mary</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://www.wired.com/wiredscience/clasticdetritus/">Clastic Detritus</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://rockglacier.blogspot.com/">Cryology and Co.</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://blogs.agu.org/wildwildscience/">Dan&#039;s Wild Wild Science Journal</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://paleochick.blogspot.com/">Dinochick Blogs</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://earthinsightcache.blogspot.com/">Earth Insight Cache</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://bigthink.com/blogs/eruptions/">Eruptions</a></li> <li><a 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href="https://web.archive.org/web/20120112214023/http://www.stagesofsuccession.com/">Stages of Succession</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://stories-in-stone.blogspot.com/">Stories In Stone</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://blogs.agu.org/terracentral/">Terra Central</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://theaccretionarywedge.wordpress.com/">The Accretionary Wedge</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://dynamic-earth.blogspot.com/">The Dynamic Earth</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://jazinator.blogspot.com/">The Geology P.A.G.E.</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://greatsocalshakeout.blogspot.com/" target="_blank">The Great Southern California ShakeOut Blog</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://blogs.agu.org/landslideblog/">The Landslide 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href="https://web.archive.org/web/20120112214023/http://www.mbvrc.wwu.edu/">Mount Baker Volcano Research Center</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://www.volcano.si.edu/" target="_blank">Smithsonian Institution&#039;s Global Volcanism Program</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://www.swisseduc.ch/stromboli/" target="_blank">Stromboli online: Volcanoes of the World</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://www.mnh.si.edu/earth/main_frames.html" target="_blank">This Dynamic Earth: Smithsonian National Museum of Natural History</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://www.avo.alaska.edu/" target="_blank">USGS Alaska Volcano Observatory</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://vulcan.wr.usgs.gov/" target="_blank">USGS Cascades Volcano Observatory</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://hvo.wr.usgs.gov/" target="_blank">USGS Hawaiian Volcano Observatory</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://volcanoes.usgs.gov/" target="_blank">USGS Volcano Hazards Program</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://volcanoes.usgs.gov/yvo/" target="_blank">USGS Yellowstone Volcano Observatory</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://www.volcanoes.com/" target="_blank">Volcanoes.com</a></li> <li><a href="https://web.archive.org/web/20120112214023/http://en.wikipedia.org/wiki/Wikipedia:WikiProject_Volcanoes" target="_blank">WikiProject Volcanoes</a></li> </ul> </div> <div id="linkcat-158" class="widget widget_links"><h3 class="widgettitle">Other Websites</h3> <ul class="xoxo blogroll"> <li><a href="https://web.archive.org/web/20120112214023/http://greatsocalshakeout.blogspot.com/" target="_blank">The Great Southern California ShakeOut Blog</a></li> </ul> </div> </div><br class="clearfloat"/> </div> </div> </div> <div class="footer"> <div class="container"> <div class="wrapper"> <div class="copyright">&copy;2012 <a href="https://web.archive.org/web/20120112214023/http://www.agu.org/" target="_blank">American Geophysical Union</a>. 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