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class="vector-toc-list"> <li id="toc-Beach" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Beach"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>Beach</span> </div> </a> <ul id="toc-Beach-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Inland" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Inland"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.2</span> <span>Inland</span> </div> </a> <ul id="toc-Inland-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Human_use" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Human_use"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Human use</span> </div> </a> <ul id="toc-Human_use-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Mars" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Mars"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Mars</span> </div> </a> <ul id="toc-Mars-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Gallery" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Gallery"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Gallery</span> </div> </a> <ul id="toc-Gallery-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Pebble</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 66 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-66" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">66 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AD%D8%B5%D9%89_%D8%A7%D9%84%D8%B4%D9%88%D8%A7%D8%B7%D8%A6" title="حصى الشواطئ – Arabic" lang="ar" hreflang="ar" data-title="حصى الشواطئ" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Ruello_de_glera" title="Ruello de glera – Aragonese" lang="an" hreflang="an" data-title="Ruello de glera" data-language-autonym="Aragonés" data-language-local-name="Aragonese" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/%C3%87%C4%B1nq%C4%B1l" title="Çınqıl – Azerbaijani" lang="az" hreflang="az" data-title="Çınqıl" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/Chio%CC%8Dh-nn%CC%84g" title="Chio̍h-nn̄g – Minnan" lang="nan" hreflang="nan" data-title="Chio̍h-nn̄g" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="Minnan" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%93%D0%B0%D0%BB%D1%8C%D0%BA%D0%B0" title="Галька – Belarusian" lang="be" hreflang="be" data-title="Галька" data-language-autonym="Беларуская" data-language-local-name="Belarusian" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%93%D0%B0%D0%BB%D1%8C%D0%BA%D0%B0" title="Галька – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Галька" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="Belarusian (Taraškievica orthography)" class="interlanguage-link-target"><span>Беларуская (тарашкевіца)</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Bili" title="Bili – Breton" lang="br" hreflang="br" data-title="Bili" data-language-autonym="Brezhoneg" data-language-local-name="Breton" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/C%C3%B2dol" title="Còdol – Catalan" lang="ca" hreflang="ca" data-title="Còdol" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%A8%D0%B0%D0%BA%C4%83" title="Шакă – Chuvash" lang="cv" hreflang="cv" data-title="Шакă" data-language-autonym="Чӑвашла" data-language-local-name="Chuvash" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Ka%C4%8D%C3%ADrek" title="Kačírek – Czech" lang="cs" hreflang="cs" data-title="Kačírek" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-sn mw-list-item"><a href="https://sn.wikipedia.org/wiki/Hurungudo" title="Hurungudo – Shona" lang="sn" hreflang="sn" data-title="Hurungudo" data-language-autonym="ChiShona" data-language-local-name="Shona" class="interlanguage-link-target"><span>ChiShona</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Ral_(geologi)" title="Ral (geologi) – Danish" lang="da" hreflang="da" data-title="Ral (geologi)" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Veeris" title="Veeris – Estonian" lang="et" hreflang="et" data-title="Veeris" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%92%CF%8C%CF%84%CF%83%CE%B1%CE%BB%CE%BF" title="Βότσαλο – Greek" lang="el" hreflang="el" data-title="Βότσαλο" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Canto_rodado" title="Canto rodado – Spanish" lang="es" hreflang="es" data-title="Canto rodado" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/%C5%9Ctoneto" title="Ŝtoneto – Esperanto" lang="eo" hreflang="eo" data-title="Ŝtoneto" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Errekarri" title="Errekarri – Basque" lang="eu" hreflang="eu" data-title="Errekarri" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B1%DB%8C%DA%AF" title="ریگ – Persian" lang="fa" hreflang="fa" data-title="ریگ" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Galet" title="Galet – French" lang="fr" hreflang="fr" data-title="Galet" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Cloch_dhuirlinge" title="Cloch dhuirlinge – Irish" lang="ga" hreflang="ga" data-title="Cloch dhuirlinge" data-language-autonym="Gaeilge" data-language-local-name="Irish" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Canto_rolado" title="Canto rolado – Galician" lang="gl" hreflang="gl" data-title="Canto rolado" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-gan mw-list-item"><a href="https://gan.wikipedia.org/wiki/%E7%A3%A8%E7%A1%8C%E7%89%AF%E5%AD%90" title="磨硌牯子 – Gan" lang="gan" hreflang="gan" data-title="磨硌牯子" data-language-autonym="贛語" data-language-local-name="Gan" class="interlanguage-link-target"><span>贛語</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%A1%B0%EC%95%BD%EB%8F%8C" title="조약돌 – Korean" lang="ko" hreflang="ko" data-title="조약돌" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Stono" title="Stono – Ido" lang="io" hreflang="io" data-title="Stono" data-language-autonym="Ido" data-language-local-name="Ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Kerakal" title="Kerakal – Indonesian" lang="id" hreflang="id" data-title="Kerakal" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Ciottolo" title="Ciottolo – Italian" lang="it" hreflang="it" data-title="Ciottolo" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%97%D7%9C%D7%95%D7%A7_%D7%A0%D7%97%D7%9C" title="חלוק נחל – Hebrew" lang="he" hreflang="he" data-title="חלוק נחל" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%99%E1%83%94%E1%83%9C%E1%83%AD%E1%83%98" title="კენჭი – Georgian" lang="ka" hreflang="ka" data-title="კენჭი" data-language-autonym="ქართული" data-language-local-name="Georgian" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%9C%D0%B0%D0%BB%D1%82%D0%B0%D0%BB%D0%B0%D1%80" title="Малталар – Kazakh" lang="kk" hreflang="kk" data-title="Малталар" data-language-autonym="Қазақша" data-language-local-name="Kazakh" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%93%D0%B0%D0%BB%D1%8C%D0%BA%D0%B0" title="Галька – Kyrgyz" lang="ky" hreflang="ky" data-title="Галька" data-language-autonym="Кыргызча" data-language-local-name="Kyrgyz" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/%C5%BDvirg%C5%BEdas" title="Žvirgždas – Lithuanian" lang="lt" hreflang="lt" data-title="Žvirgždas" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Kezelstein" title="Kezelstein – Limburgish" lang="li" hreflang="li" data-title="Kezelstein" data-language-autonym="Limburgs" data-language-local-name="Limburgish" class="interlanguage-link-target"><span>Limburgs</span></a></li><li class="interlanguage-link interwiki-lfn mw-list-item"><a href="https://lfn.wikipedia.org/wiki/Calculo_(jeolojia)" title="Calculo (jeolojia) – Lingua Franca Nova" lang="lfn" hreflang="lfn" data-title="Calculo (jeolojia)" data-language-autonym="Lingua Franca Nova" data-language-local-name="Lingua Franca Nova" class="interlanguage-link-target"><span>Lingua Franca Nova</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Kavics" title="Kavics – Hungarian" lang="hu" hreflang="hu" data-title="Kavics" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-mg mw-list-item"><a href="https://mg.wikipedia.org/wiki/Vatokilonjy" title="Vatokilonjy – Malagasy" lang="mg" hreflang="mg" data-title="Vatokilonjy" data-language-autonym="Malagasy" data-language-local-name="Malagasy" class="interlanguage-link-target"><span>Malagasy</span></a></li><li class="interlanguage-link interwiki-cdo mw-list-item"><a href="https://cdo.wikipedia.org/wiki/Si%C5%8Fh-t%C3%A0u-l%C3%A2ung" title="Siŏh-tàu-lâung – Mindong" lang="cdo" hreflang="cdo" data-title="Siŏh-tàu-lâung" data-language-autonym="閩東語 / Mìng-dĕ̤ng-ngṳ̄" data-language-local-name="Mindong" class="interlanguage-link-target"><span>閩東語 / Mìng-dĕ̤ng-ngṳ̄</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Kiezelsteen" title="Kiezelsteen – Dutch" lang="nl" hreflang="nl" data-title="Kiezelsteen" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E7%A4%AB" title="礫 – Japanese" lang="ja" hreflang="ja" data-title="礫" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-nap mw-list-item"><a href="https://nap.wikipedia.org/wiki/Vreccia" title="Vreccia – Neapolitan" lang="nap" hreflang="nap" data-title="Vreccia" data-language-autonym="Napulitano" data-language-local-name="Neapolitan" class="interlanguage-link-target"><span>Napulitano</span></a></li><li class="interlanguage-link interwiki-ce mw-list-item"><a href="https://ce.wikipedia.org/wiki/%D0%A1%D0%B8%D1%86%D0%BA%D1%8A%D0%B0%D1%80" title="Сицкъар – Chechen" lang="ce" hreflang="ce" data-title="Сицкъар" data-language-autonym="Нохчийн" data-language-local-name="Chechen" class="interlanguage-link-target"><span>Нохчийн</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Rullestein" title="Rullestein – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Rullestein" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Rullestein" title="Rullestein – Norwegian Nynorsk" lang="nn" hreflang="nn" data-title="Rullestein" data-language-autonym="Norsk nynorsk" data-language-local-name="Norwegian Nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Arreb%C3%B2t" title="Arrebòt – Occitan" lang="oc" hreflang="oc" data-title="Arrebòt" data-language-autonym="Occitan" data-language-local-name="Occitan" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-om mw-list-item"><a href="https://om.wikipedia.org/wiki/Cancullee" title="Cancullee – Oromo" lang="om" hreflang="om" data-title="Cancullee" data-language-autonym="Oromoo" data-language-local-name="Oromo" class="interlanguage-link-target"><span>Oromoo</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Shag%CA%BBal" title="Shagʻal – Uzbek" lang="uz" hreflang="uz" data-title="Shagʻal" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="Uzbek" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%DA%A9%D9%86%DA%A9%D8%B1" title="کنکر – Western Punjabi" lang="pnb" hreflang="pnb" data-title="کنکر" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Otoczak_(geologia)" title="Otoczak (geologia) – Polish" lang="pl" hreflang="pl" data-title="Otoczak (geologia)" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Seixo" title="Seixo – Portuguese" lang="pt" hreflang="pt" data-title="Seixo" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Balast_(material_de_construc%C8%9Bie)" title="Balast (material de construcție) – Romanian" lang="ro" hreflang="ro" data-title="Balast (material de construcție)" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%93%D0%B0%D0%BB%D1%8C%D0%BA%D0%B0" title="Галька – Russian" lang="ru" hreflang="ru" data-title="Галька" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sah mw-list-item"><a href="https://sah.wikipedia.org/wiki/%D0%A7%D0%B0%D0%B9" title="Чай – Yakut" lang="sah" hreflang="sah" data-title="Чай" data-language-autonym="Саха тыла" data-language-local-name="Yakut" class="interlanguage-link-target"><span>Саха тыла</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Pebble" title="Pebble – Simple English" lang="en-simple" hreflang="en-simple" data-title="Pebble" data-language-autonym="Simple English" 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data-language-autonym="தமிழ்" data-language-local-name="Tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/%D0%A7%D0%B0%D0%B3%D1%8B%D1%80%D1%82%D0%B0%D1%88" title="Чагырташ – Tatar" lang="tt" hreflang="tt" data-title="Чагырташ" data-language-autonym="Татарча / tatarça" data-language-local-name="Tatar" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-to mw-list-item"><a href="https://to.wikipedia.org/wiki/Fo%CA%BBi_maka" title="Foʻi maka – Tongan" lang="to" hreflang="to" data-title="Foʻi maka" data-language-autonym="Lea faka-Tonga" data-language-local-name="Tongan" class="interlanguage-link-target"><span>Lea faka-Tonga</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/%C3%87ak%C4%B1l_ta%C5%9F%C4%B1" title="Çakıl taşı – Turkish" lang="tr" hreflang="tr" data-title="Çakıl taşı" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%93%D0%B0%D0%BB%D1%8C%D0%BA%D0%B0" title="Галька – Ukrainian" lang="uk" hreflang="uk" data-title="Галька" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%DA%A9%D9%86%DA%A9%D8%B1" title="کنکر – Urdu" lang="ur" hreflang="ur" data-title="کنکر" data-language-autonym="اردو" data-language-local-name="Urdu" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Cu%E1%BB%99i_(%C4%91%C3%A1)" title="Cuội (đá) – Vietnamese" lang="vi" hreflang="vi" data-title="Cuội (đá)" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E5%8D%B5%E7%9F%B3" title="卵石 – Wu" lang="wuu" hreflang="wuu" data-title="卵石" data-language-autonym="吴语" data-language-local-name="Wu" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E7%9F%B3%E6%98%A5" title="石春 – Cantonese" lang="yue" hreflang="yue" data-title="石春" data-language-autonym="粵語" data-language-local-name="Cantonese" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-bat-smg mw-list-item"><a href="https://bat-smg.wikipedia.org/wiki/%C5%BDvirzdos" title="Žvirzdos – Samogitian" lang="sgs" hreflang="sgs" data-title="Žvirzdos" data-language-autonym="Žemaitėška" data-language-local-name="Samogitian" class="interlanguage-link-target"><span>Žemaitėška</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E5%8D%B5%E7%9F%B3" title="卵石 – Chinese" lang="zh" hreflang="zh" data-title="卵石" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-bew mw-list-item"><a href="https://bew.wikipedia.org/wiki/Kolar" title="Kolar – Betawi" lang="bew" hreflang="bew" data-title="Kolar" data-language-autonym="Betawi" data-language-local-name="Betawi" class="interlanguage-link-target"><span>Betawi</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q14673#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> 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</div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Appearance</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to 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i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">For the smartwatch, see <a href="/wiki/Pebble_(watch)" title="Pebble (watch)">Pebble (watch)</a>. For other, see <a href="/wiki/Pebble_(disambiguation)" class="mw-disambig" title="Pebble (disambiguation)">Pebble (disambiguation)</a>.</div> <style data-mw-deduplicate="TemplateStyles:r1251242444">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px solid #f28500}.mw-parser-output .ambox-style{border-left:10px solid #fc3}.mw-parser-output .ambox-move{border-left:10px solid #9932cc}.mw-parser-output .ambox-protection{border-left:10px solid #a2a9b1}.mw-parser-output .ambox .mbox-text{border:none;padding:0.25em 0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}@media print{body.ns-0 .mw-parser-output .ambox{display:none!important}}</style><table class="box-More_citations_needed plainlinks metadata ambox ambox-content ambox-Refimprove" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><a href="/wiki/File:Question_book-new.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span">This article <b>needs additional citations for <a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability">verification</a></b>.<span class="hide-when-compact"> Please help <a href="/wiki/Special:EditPage/Pebble" title="Special:EditPage/Pebble">improve this article</a> by <a href="/wiki/Help:Referencing_for_beginners" title="Help:Referencing for beginners">adding citations to reliable sources</a>. Unsourced material may be challenged and removed.<br /><small><span class="plainlinks"><i>Find sources:</i> <a rel="nofollow" class="external text" href="https://www.google.com/search?as_eq=wikipedia&q=%22Pebble%22">"Pebble"</a> – <a rel="nofollow" class="external text" href="https://www.google.com/search?tbm=nws&q=%22Pebble%22+-wikipedia&tbs=ar:1">news</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?&q=%22Pebble%22&tbs=bkt:s&tbm=bks">newspapers</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?tbs=bks:1&q=%22Pebble%22+-wikipedia">books</a> <b>·</b> <a rel="nofollow" class="external text" href="https://scholar.google.com/scholar?q=%22Pebble%22">scholar</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.jstor.org/action/doBasicSearch?Query=%22Pebble%22&acc=on&wc=on">JSTOR</a></span></small></span> <span class="date-container"><i>(<span class="date">December 2013</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Pebble_Dash_(15366562092).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/ac/Pebble_Dash_%2815366562092%29.jpg/300px-Pebble_Dash_%2815366562092%29.jpg" decoding="async" width="300" height="300" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/ac/Pebble_Dash_%2815366562092%29.jpg/450px-Pebble_Dash_%2815366562092%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/ac/Pebble_Dash_%2815366562092%29.jpg/600px-Pebble_Dash_%2815366562092%29.jpg 2x" data-file-width="2448" data-file-height="2448" /></a><figcaption>Close view of pebbles<sup class="noprint Inline-Template" style="margin-left:0.1em; white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Vagueness" title="Wikipedia:Vagueness"><span title="How big are these pebbles? (February 2023)">vague</span></a></i>]</sup></figcaption></figure> <p>A <b>pebble</b> is a <a href="/wiki/Clastic_rocks" class="mw-redirect" title="Clastic rocks">clast</a> of <a href="/wiki/Rock_(geology)" title="Rock (geology)">rock</a> with a <a href="/wiki/Grain_size" title="Grain size">particle size</a> of 4–64 mm (0.16–2.52 in) based on the <a href="/wiki/Particle_size_(grain_size)" class="mw-redirect" title="Particle size (grain size)">Udden-Wentworth scale</a> of <a href="/wiki/Sedimentology" title="Sedimentology">sedimentology</a>. Pebbles are generally considered larger than <a href="/wiki/Granule_(geology)" title="Granule (geology)">granules</a> (2–4 mm (0.079–0.157 in) in diameter) and smaller than <a href="/wiki/Cobble_(geology)" title="Cobble (geology)">cobbles</a> (64–256 mm (2.5–10.1 in) in diameter). A rock made predominantly of pebbles is termed a <a href="/wiki/Conglomerate_(geology)" title="Conglomerate (geology)">conglomerate</a>. <a href="/wiki/Oldowan" title="Oldowan">Pebble tools</a> are among the earliest known man-made artifacts, dating from the <a href="/wiki/Palaeolithic" class="mw-redirect" title="Palaeolithic">Palaeolithic</a> period of human history. </p><p>A beach composed chiefly of surface pebbles is commonly termed a <a href="/wiki/Shingle_beach" title="Shingle beach">shingle beach</a>. This type of beach has <a href="/wiki/Armor_(hydrology)" title="Armor (hydrology)">armoring characteristics</a> with respect to wave <a href="/wiki/Erosion" title="Erosion">erosion</a>, as well as ecological niches that provide <a href="/wiki/Habitat" title="Habitat">habitat</a> for animals and plants. </p><p>Inshore banks of shingle (large quantities of pebbles) exist in some locations, such as the entrance to the <a href="/wiki/River_Ore" class="mw-redirect" title="River Ore">River Ore</a>, England, where the moving banks of shingle give notable navigational challenges.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>Pebbles come in various colors and textures and can have streaks, known as <a href="/wiki/Vein_(geology)" title="Vein (geology)">veins</a>, of <a href="/wiki/Quartz" title="Quartz">quartz</a> or other <a href="/wiki/Mineral" title="Mineral">minerals</a>. Pebbles are mostly smooth but, dependent on how frequently they come in contact with the sea, they can have marks of contact with other rocks or other pebbles. Pebbles left above the <a href="/wiki/Tide" title="Tide">high water mark</a> may have growths of organisms such as <a href="/wiki/Lichen" title="Lichen">lichen</a> on them, signifying the lack of contact with <a href="/wiki/Seawater" title="Seawater">seawater</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Location">Location</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pebble&action=edit&section=1" title="Edit section: Location"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1251242444"><table class="box-Unreferenced plainlinks metadata ambox ambox-content ambox-Unreferenced" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><a href="/wiki/File:Question_book-new.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span">This section <b>does not <a href="/wiki/Wikipedia:Citing_sources" title="Wikipedia:Citing sources">cite</a> any <a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability">sources</a></b>.<span class="hide-when-compact"> Please help <a href="/wiki/Special:EditPage/Pebble" title="Special:EditPage/Pebble">improve this section</a> by <a href="/wiki/Help:Referencing_for_beginners" title="Help:Referencing for beginners">adding citations to reliable sources</a>. Unsourced material may be challenged and <a href="/wiki/Wikipedia:Verifiability#Burden_of_evidence" title="Wikipedia:Verifiability">removed</a>.<br /><small><span class="plainlinks"><i>Find sources:</i> <a rel="nofollow" class="external text" href="https://www.google.com/search?as_eq=wikipedia&q=%22Pebble%22">"Pebble"</a> – <a rel="nofollow" class="external text" href="https://www.google.com/search?tbm=nws&q=%22Pebble%22+-wikipedia&tbs=ar:1">news</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?&q=%22Pebble%22&tbs=bkt:s&tbm=bks">newspapers</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?tbs=bks:1&q=%22Pebble%22+-wikipedia">books</a> <b>·</b> <a rel="nofollow" class="external text" href="https://scholar.google.com/scholar?q=%22Pebble%22">scholar</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.jstor.org/action/doBasicSearch?Query=%22Pebble%22&acc=on&wc=on">JSTOR</a></span></small></span> <span class="date-container"><i>(<span class="date">May 2024</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <p>Pebbles on Earth exist in two types of locations – on the beaches of various oceans and seas, and inland where ancient seas used to cover the land. Then, when the seas retreated, the rocks became landlocked.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (May 2024)">citation needed</span></a></i>]</sup> Here, they entered lakes and ponds, and form in <a href="/wiki/River" title="River">rivers</a>, travelling into <a href="/wiki/Estuary" title="Estuary">estuaries</a> where the smoothing continues in the sea. </p><p>Beach pebbles and river pebbles (also known as river rock) are distinct in their geological formation and appearance. </p><p>Manufactured Pebbles-These  are made from natural stones such as marble, granite, and sandstone. Manufactured Pebbles are designed to specified sizes and forms, making them flexible for many purposes.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Beach">Beach</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pebble&action=edit&section=2" title="Edit section: Beach"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Beach_rocks_and_pebbles.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7d/Beach_rocks_and_pebbles.jpg/220px-Beach_rocks_and_pebbles.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7d/Beach_rocks_and_pebbles.jpg/330px-Beach_rocks_and_pebbles.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7d/Beach_rocks_and_pebbles.jpg/440px-Beach_rocks_and_pebbles.jpg 2x" data-file-width="4608" data-file-height="3456" /></a><figcaption>Differently sized rocks and pebbles on a beach in northern England</figcaption></figure> <p>Beach pebbles form gradually over time as the ocean water washes over loose rock particles. The result is a smooth, rounded appearance. The typical size range is from 2 mm to 50 mm. The colors range from translucent white to black, and include shades of yellow, brown, red and green. Some of the more plentiful pebble beaches are along the coast of the <a href="/wiki/Pacific_Ocean" title="Pacific Ocean">Pacific Ocean</a>, beginning in Canada and extending down to the tip of South America in Argentina. Other pebble beaches are in northern Europe (particularly on the beaches of the <a href="/wiki/Norwegian_Sea" title="Norwegian Sea">Norwegian Sea</a>), along the coast of the U.K. and Ireland, on the shores of Australia, and around the islands of Indonesia and Japan. </p> <div class="mw-heading mw-heading3"><h3 id="Inland">Inland</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pebble&action=edit&section=3" title="Edit section: Inland"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:River_side_pebbles_and_rocks.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/ca/River_side_pebbles_and_rocks.jpg/170px-River_side_pebbles_and_rocks.jpg" decoding="async" width="170" height="227" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/ca/River_side_pebbles_and_rocks.jpg/255px-River_side_pebbles_and_rocks.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/ca/River_side_pebbles_and_rocks.jpg/340px-River_side_pebbles_and_rocks.jpg 2x" data-file-width="3120" data-file-height="4160" /></a><figcaption>Pebbles on a riverbank</figcaption></figure> <p>Inland pebbles (river pebbles of river rock) are usually found along the shores of large rivers and lakes. These pebbles form as the flowing water washes over rock particles on the bottom and along the shores of the <a href="/wiki/River" title="River">river</a>. The smoothness and color of river pebbles depends on several factors, such as the composition of the <a href="/wiki/Soil" title="Soil">soil</a> of the river banks, the chemical characteristics of the water, and the speed of the <a href="/wiki/Water_current" class="mw-redirect" title="Water current">current</a>. Because river current is gentler than the <a href="/wiki/Wind_wave" title="Wind wave">ocean waves</a>, river pebbles are usually not as smooth as beach pebbles. The most common colors of river rock are black, grey, green, brown and white. </p> <div class="mw-heading mw-heading2"><h2 id="Human_use">Human use</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pebble&action=edit&section=4" title="Edit section: Human use"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Pebble_lane.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/ac/Pebble_lane.JPG/220px-Pebble_lane.JPG" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/ac/Pebble_lane.JPG/330px-Pebble_lane.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/ac/Pebble_lane.JPG/440px-Pebble_lane.JPG 2x" data-file-width="1510" data-file-height="1132" /></a><figcaption>A walkway decorated with pebbles set into concrete</figcaption></figure> <p>Beach pebbles and river pebbles are used for a variety of purposes, both outdoors and indoors. They can be sorted by colour and size, and they can also be polished to improve the texture and colour. Outdoors, beach pebbles are often used for <a href="/wiki/Landscaping" title="Landscaping">landscaping</a>, <a href="/wiki/Building_construction" class="mw-redirect" title="Building construction">construction</a> and as decorative elements. Beach pebbles are often used to cover walkways and driveways, around pools, in and around plant containers, on patios and decks. Beach and river pebbles are also used to create water-smart gardens in areas where water is scarce. Small pebbles are also used to create living spaces and gardens on the rooftops of buildings. Indoors, pebbles can be used as <a href="/wiki/Bookend" title="Bookend">bookends</a> and <a href="/wiki/Paperweight" title="Paperweight">paperweights</a>. Large pebbles are also used to create "<a href="/wiki/Pet_rocks" class="mw-redirect" title="Pet rocks">pet rocks</a>" for children. </p> <div class="mw-heading mw-heading2"><h2 id="Mars">Mars</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pebble&action=edit&section=5" title="Edit section: Mars"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>On <a href="/wiki/Mars" title="Mars">Mars</a>, slabs of pebbly conglomerate rock have been found and have been interpreted by scientists as having formed in an ancient streambed. The gravels, which were discovered by <a href="/wiki/NASA" title="NASA">NASA</a>'s Mars rover <a href="/wiki/Curiosity_(rover)" title="Curiosity (rover)">Curiosity</a>, range from the size of sand particles to the size of golf balls. Analysis has shown that the pebbles were deposited by a stream that flowed at walking pace and was ankle- to hip-deep.<sup id="cite_ref-Mars1_3-0" class="reference"><a href="#cite_note-Mars1-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Gallery">Gallery</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pebble&action=edit&section=6" title="Edit section: Gallery"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul class="gallery mw-gallery-packed"> <li class="gallerybox" style="width: 182.66666666667px"> <div class="thumb" style="width: 180.66666666667px;"><span typeof="mw:File"><a href="/wiki/File:Wave_Retreating_from_Pebbles.jpg" class="mw-file-description" title="Pebbles given a rounded shape by wave action"><img alt="Pebbles given a rounded shape by wave action" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0a/Wave_Retreating_from_Pebbles.jpg/271px-Wave_Retreating_from_Pebbles.jpg" decoding="async" width="181" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0a/Wave_Retreating_from_Pebbles.jpg/407px-Wave_Retreating_from_Pebbles.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0a/Wave_Retreating_from_Pebbles.jpg/542px-Wave_Retreating_from_Pebbles.jpg 2x" data-file-width="2048" data-file-height="1360" /></a></span></div> <div class="gallerytext">Pebbles given a rounded shape by wave action</div> </li> <li class="gallerybox" style="width: 148px"> <div class="thumb" style="width: 146px;"><span typeof="mw:File"><a href="/wiki/File:Halite_Dead_Sea_Beach_Pebbles.JPG" class="mw-file-description" title="Beach pebbles made of halite; western Dead Sea coast, Israel"><img alt="Beach pebbles made of halite; western Dead Sea coast, Israel" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/18/Halite_Dead_Sea_Beach_Pebbles.JPG/219px-Halite_Dead_Sea_Beach_Pebbles.JPG" decoding="async" width="146" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/18/Halite_Dead_Sea_Beach_Pebbles.JPG/329px-Halite_Dead_Sea_Beach_Pebbles.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/18/Halite_Dead_Sea_Beach_Pebbles.JPG/438px-Halite_Dead_Sea_Beach_Pebbles.JPG 2x" data-file-width="2892" data-file-height="2376" /></a></span></div> <div class="gallerytext">Beach pebbles made of <a href="/wiki/Halite" title="Halite">halite</a>; western <a href="/wiki/Dead_Sea" title="Dead Sea">Dead Sea</a> coast, <a href="/wiki/Israel" title="Israel">Israel</a></div> </li> <li class="gallerybox" style="width: 182.66666666667px"> <div class="thumb" style="width: 180.66666666667px;"><span typeof="mw:File"><a href="/wiki/File:Pebbles_on_beach_at_Broulee_-NSW_-Australia-2Jan2009.jpg" class="mw-file-description" title="Pebbles on a beach at Broulee, Australia"><img alt="Pebbles on a beach at Broulee, Australia" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9e/Pebbles_on_beach_at_Broulee_-NSW_-Australia-2Jan2009.jpg/271px-Pebbles_on_beach_at_Broulee_-NSW_-Australia-2Jan2009.jpg" decoding="async" width="181" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9e/Pebbles_on_beach_at_Broulee_-NSW_-Australia-2Jan2009.jpg/407px-Pebbles_on_beach_at_Broulee_-NSW_-Australia-2Jan2009.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9e/Pebbles_on_beach_at_Broulee_-NSW_-Australia-2Jan2009.jpg/542px-Pebbles_on_beach_at_Broulee_-NSW_-Australia-2Jan2009.jpg 2x" data-file-width="1280" data-file-height="850" /></a></span></div> <div class="gallerytext">Pebbles on a beach at Broulee, Australia</div> </li> </ul> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pebble&action=edit&section=7" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Gravel" title="Gravel">Gravel</a></li> <li><a href="/wiki/Japanese_Garden_of_Peace" title="Japanese Garden of Peace">Japanese Garden of Peace</a></li> <li><a href="/wiki/Rock_(geology)" title="Rock (geology)">Rock</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pebble&action=edit&section=8" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.visitmyharbour.com/harbours/east-coast/ore-alde-rivers/">"Ore and Alde, Rivers - East Coast: pilotage, charts, photos and marine business listings"</a>. <i>www.visitmyharbour.com</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.visitmyharbour.com&rft.atitle=Ore+and+Alde%2C+Rivers+-+East+Coast%3A+pilotage%2C+charts%2C+photos+and+marine+business+listings&rft_id=http%3A%2F%2Fwww.visitmyharbour.com%2Fharbours%2Feast-coast%2Fore-alde-rivers%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3APebble" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://buypebbles.com/how-pebbles-get-manufacturered/">"How Pebbles Get Manufactured?"</a>. <i>buypebbles.com</i>. 2024-08-11.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=buypebbles.com&rft.atitle=How+Pebbles+Get+Manufactured%3F&rft.date=2024-08-11&rft_id=https%3A%2F%2Fbuypebbles.com%2Fhow-pebbles-get-manufacturered%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3APebble" class="Z3988"></span></span> </li> <li id="cite_note-Mars1-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-Mars1_3-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.jpl.nasa.gov/news/news.php?release=2012-305">"NASA Rover Finds Old Streambed on Martian Surface"</a>. <i>News</i>. <a href="/wiki/Jet_Propulsion_Laboratory" title="Jet Propulsion Laboratory">Jet Propulsion Laboratory</a> / <a href="/wiki/California_Institute_of_Technology" title="California Institute of Technology">California Institute of Technology</a>. 27 September 2012<span class="reference-accessdate">. Retrieved <span class="nowrap">28 February</span> 2016</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=News&rft.atitle=NASA+Rover+Finds+Old+Streambed+on+Martian+Surface&rft.date=2012-09-27&rft_id=http%3A%2F%2Fwww.jpl.nasa.gov%2Fnews%2Fnews.php%3Frelease%3D2012-305&rfr_id=info%3Asid%2Fen.wikipedia.org%3APebble" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Pebble&action=edit&section=9" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Commons-logo.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/12px-Commons-logo.svg.png" 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typeof="mw:File"><a href="/wiki/File:Accreting_coast_Image6.svg" class="mw-file-description" title="Coastal and oceanic landforms"><img alt="Coastal and oceanic landforms" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/48/Accreting_coast_Image6.svg/140px-Accreting_coast_Image6.svg.png" decoding="async" width="140" height="66" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/48/Accreting_coast_Image6.svg/210px-Accreting_coast_Image6.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/48/Accreting_coast_Image6.svg/280px-Accreting_coast_Image6.svg.png 2x" data-file-width="1481" data-file-height="697" /></a></span><br /><br /><span typeof="mw:File"><a href="/wiki/File:Fernando_noronha.jpg" class="mw-file-description" title="Dois Irmãos - Fernando de Noronha"><img alt="Dois Irmãos - Fernando de Noronha" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/58/Fernando_noronha.jpg/140px-Fernando_noronha.jpg" decoding="async" width="140" 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href="/wiki/Beachrock" title="Beachrock">Beachrock</a></li> <li><a href="/wiki/Coastal_morphodynamics" title="Coastal morphodynamics">Coastal morphodynamics</a></li> <li><a href="/wiki/Pocket_beach" title="Pocket beach">Pocket beach</a></li> <li><a href="/wiki/Raised_beach" title="Raised beach">Raised beach</a></li> <li><a href="/wiki/Modern_recession_of_beaches" class="mw-redirect" title="Modern recession of beaches">Recession</a></li> <li><a href="/wiki/Seashell" title="Seashell">Shell beach</a></li> <li><a href="/wiki/Shingle_beach" title="Shingle beach">Shingle beach</a></li> <li><a href="/wiki/Storm_beach" title="Storm beach">Storm beach</a></li> <li><a href="/wiki/Wash_margin" title="Wash margin">Wash margin</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/River_mouth" title="River mouth">River mouths</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Debouch" title="Debouch">Debouch</a></li> <li><a href="/wiki/Mouth_bar" title="Mouth bar">Mouth bar</a></li> <li><a href="/wiki/River_delta" title="River delta">River delta</a> <ul><li><a href="/wiki/Mega_delta" class="mw-redirect" title="Mega delta">mega</a></li> <li><a href="/wiki/Regressive_delta" title="Regressive delta">regressive</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Large-scale_coastal_behaviour" title="Large-scale coastal behaviour">Processes</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Blowhole_(geology)" title="Blowhole (geology)">Blowhole</a></li> <li><a href="/wiki/Cliffed_coast" title="Cliffed coast">Cliffed coast</a></li> <li><a href="/wiki/Coastal_biogeomorphology" title="Coastal biogeomorphology">Coastal biogeomorphology</a></li> <li><a href="/wiki/Coastal_erosion" title="Coastal erosion">Coastal erosion</a></li> <li><a href="/wiki/Concordant_coastline" title="Concordant coastline">Concordant coastline</a></li> <li><a href="/wiki/Current_(hydrology)" title="Current (hydrology)">Current</a></li> <li><a href="/wiki/Cuspate_foreland" title="Cuspate foreland">Cuspate foreland</a></li> <li><a href="/wiki/Discordant_coastline" title="Discordant coastline">Discordant coastline</a></li> <li><a href="/wiki/Emergent_coastline" title="Emergent coastline">Emergent coastline</a></li> <li><a href="/wiki/Feeder_bluff" title="Feeder bluff">Feeder bluff</a></li> <li><a href="/wiki/Flat_coast" title="Flat coast">Flat coast</a></li> <li><a href="/wiki/Graded_shoreline" title="Graded shoreline">Graded shoreline</a></li> <li><a href="/wiki/Ingression_coast" title="Ingression coast">Ingression coast</a></li> <li><a href="/wiki/Large-scale_coastal_behaviour" title="Large-scale coastal behaviour">Large-scale coastal behaviour</a></li> <li><a href="/wiki/Longshore_drift" title="Longshore drift">Longshore drift</a></li> <li><a href="/wiki/Marine_regression" title="Marine regression">Marine regression</a></li> <li><a href="/wiki/Marine_transgression" title="Marine transgression">Marine transgression</a></li> <li><a href="/wiki/Raised_shoreline" title="Raised shoreline">Raised shoreline</a></li> <li><a href="/wiki/Rip_current" title="Rip current">Rip current</a></li> <li><a href="/wiki/Rocky_shore" title="Rocky shore">Rocky shore</a></li> <li><a href="/wiki/Sea_cave" title="Sea cave">Sea cave</a></li> <li><a href="/wiki/Sea_foam" title="Sea foam">Sea foam</a></li> <li><a href="/wiki/Shoal" title="Shoal">Shoal</a> <ul><li><a href="/wiki/Peresyp" title="Peresyp">peresyp</a></li></ul></li> <li><a href="/wiki/Steep_coast" title="Steep coast">Steep coast</a></li> <li><a href="/wiki/Submergent_coastline" title="Submergent coastline">Submergent coastline</a></li> <li><a href="/wiki/Surf_break" title="Surf break">Surf break</a></li> <li><a href="/wiki/Surf_zone" title="Surf zone">Surf zone</a></li> <li><a href="/wiki/Surge_channel" title="Surge channel">Surge channel</a></li> <li><a href="/wiki/Swash" title="Swash">Swash</a></li> <li><a href="/wiki/Undertow_(water_waves)" title="Undertow (water waves)">Undertow</a></li> <li><a href="/wiki/Volcanic_arc" title="Volcanic arc">Volcanic arc</a></li> <li><a href="/wiki/Wave-cut_platform" title="Wave-cut platform">Wave-cut platform</a></li> <li><a href="/wiki/Wave_shoaling" title="Wave shoaling">Wave shoaling</a></li> <li><a href="/wiki/Wind_fetch" title="Wind fetch">Wind fetch</a></li> <li><a href="/wiki/Wind_wave" title="Wind wave">Wind wave</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Coastal_management" title="Coastal management">Management</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Accretion_(coastal_management)" title="Accretion (coastal management)">Accretion</a></li> <li><a href="/wiki/Coastal_management" title="Coastal management">Coastal management</a></li> <li><a href="/wiki/Integrated_coastal_zone_management" title="Integrated coastal zone management">Integrated coastal zone management</a></li> <li><a href="/wiki/Submersion_(coastal_management)" title="Submersion (coastal management)">Submersion</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bulkhead_line" title="Bulkhead line">Bulkhead line</a></li> <li><a href="/wiki/Coastal_engineering" title="Coastal engineering">Coastal engineering</a></li> <li><a href="/wiki/Grain_size" title="Grain size">Grain size</a> <ul><li><a href="/wiki/Boulder" title="Boulder">boulder</a></li> <li><a href="/wiki/Clay" title="Clay">clay</a></li> <li><a href="/wiki/Cobble_(geology)" title="Cobble (geology)">cobble</a></li> <li><a href="/wiki/Granule_(geology)" title="Granule (geology)">granule</a></li> <li><a href="/wiki/Gravel" title="Gravel">gravel</a></li> <li><a class="mw-selflink selflink">pebble</a></li> <li><a href="/wiki/Sand" title="Sand">sand</a></li> <li><a href="/wiki/Shingle_beach" title="Shingle beach">shingle</a></li> <li><a href="/wiki/Silt" title="Silt">silt</a></li></ul></li> <li><a href="/wiki/Intertidal_zone" title="Intertidal zone">Intertidal zone</a></li> <li><a href="/wiki/Littoral_zone" title="Littoral zone">Littoral zone</a></li> <li><a href="/wiki/Physical_oceanography" title="Physical oceanography">Physical oceanography</a></li> <li><a href="/wiki/Region_of_freshwater_influence" title="Region of freshwater influence">Region of freshwater influence</a></li> <li><a href="/wiki/River_plume" title="River plume">River plume</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="3"><div> <ul><li><span class="noviewer" 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