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<meta content="2007-12-04 04:26:21" name="eprints.datestamp" />
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<meta content="The amount of recycled crust in sources of mantle-derived melts" name="eprints.title" />
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<meta content="Olivine, nickel, Mid-ocean ridge basalt, ocean island basalts, mantle, garnet pyroxenite, phase-relations, hawaiian plume, peridotite, eclogite, lithosphere, melting" name="eprints.keywords" />
<meta content="Plate tectonic processes introduce basaltic crust ( as eclogite) into the peridotitic mantle. The proportions of these two sources in mantle melts are poorly understood. Silica-rich melts formed from eclogite react with peridotite, converting it to olivine-free pyroxenite. Partial melts of this hybrid pyroxenite are higher in nickel and silicon but poorer in manganese, calcium, and magnesium than melts of peridotite. Olivine phenocrysts' compositions record these differences and were used to quantify the contributions of pyroxenite-derived melts in mid-ocean ridge basalts ( 10 to 30%), ocean island and continental basalts ( many > 60%), and komatiites ( 20 to 30%). These results imply involvement of 2 to 20% ( up to 28%) of recycled crust in mantle melting." name="eprints.abstract" />
<meta content="2007-04-20" name="eprints.date" />
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<meta content="Sobolev, A.V. and Hofmann, A.W. and Kuzmin, D.V. and Yaxley, G.M. and Arndt, N.T. and Chung, S-L. and Danyushevsky, L.V. and Elliot, T. and Frey, F.A. and Garcia, M.O. and Gurenko, A.A. and Kamenetsky, V.S. and Kerr, A.C. and Krivolutskaya, N.A. and Matvienkov, V.V. and Nikogosian, I. and Rocholl, A. and Sigurdsson, I.A. and Sushchevskaya, N.M. and Teklay, M. (2007) The amount of recycled crust in sources of mantle-derived melts. Science, 316 (5823). pp. 412-417. ISSN 0036-8075" name="eprints.citation" />
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<meta content="Plate tectonic processes introduce basaltic crust ( as eclogite) into the peridotitic mantle. The proportions of these two sources in mantle melts are poorly understood. Silica-rich melts formed from eclogite react with peridotite, converting it to olivine-free pyroxenite. Partial melts of this hybrid pyroxenite are higher in nickel and silicon but poorer in manganese, calcium, and magnesium than melts of peridotite. Olivine phenocrysts' compositions record these differences and were used to quantify the contributions of pyroxenite-derived melts in mid-ocean ridge basalts ( 10 to 30%), ocean island and continental basalts ( many > 60%), and komatiites ( 20 to 30%). These results imply involvement of 2 to 20% ( up to 28%) of recycled crust in mantle melting." name="DC.description" />
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<h1 class="ep_tm_pagetitle">The amount of recycled crust in sources of mantle-derived melts</h1>
<p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Sobolev, A.V.</span> and <span class="person_name">Hofmann, A.W.</span> and <span class="person_name">Kuzmin, D.V.</span> and <span class="person_name">Yaxley, G.M.</span> and <span class="person_name">Arndt, N.T.</span> and <span class="person_name">Chung, S-L.</span> and <span class="person_name">Danyushevsky, L.V.</span> and <span class="person_name">Elliot, T.</span> and <span class="person_name">Frey, F.A.</span> and <span class="person_name">Garcia, M.O.</span> and <span class="person_name">Gurenko, A.A.</span> and <span class="person_name">Kamenetsky, V.S.</span> and <span class="person_name">Kerr, A.C.</span> and <span class="person_name">Krivolutskaya, N.A.</span> and <span class="person_name">Matvienkov, V.V.</span> and <span class="person_name">Nikogosian, I.</span> and <span class="person_name">Rocholl, A.</span> and <span class="person_name">Sigurdsson, I.A.</span> and <span class="person_name">Sushchevskaya, N.M.</span> and <span class="person_name">Teklay, M.</span> (2007) <xhtml:em>The amount of recycled crust in sources of mantle-derived melts.</xhtml:em> Science, 316 (5823). pp. 412-417. ISSN 0036-8075</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/2614/1/Science2007.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/2614/1/Science2007.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />3141Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input accept-charset="utf-8" value="3423" name="docid" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1126/science.%201138113">http://dx.doi.org/10.1126/science. 1138113</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">Plate tectonic processes introduce basaltic crust ( as eclogite) into the peridotitic mantle. The proportions of these two sources in mantle melts are poorly understood. Silica-rich melts formed from eclogite react with peridotite, converting it to olivine-free pyroxenite. Partial melts of this hybrid pyroxenite are higher in nickel and silicon but poorer in manganese, calcium, and magnesium than melts of peridotite. Olivine phenocrysts' compositions record these differences and were used to quantify the contributions of pyroxenite-derived melts in mid-ocean ridge basalts ( 10 to 30%), ocean island and continental basalts ( many > 60%), and komatiites ( 20 to 30%). These results imply involvement of 2 to 20% ( up to 28%) of recycled crust in mantle melting.</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">Olivine, nickel, Mid-ocean ridge basalt, ocean island basalts, mantle, garnet pyroxenite, phase-relations, hawaiian plume, peridotite, eclogite, lithosphere, melting</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/260200.html">260000 Earth Sciences > 260200 Geophysics</a><br /><a href="http://eprints.utas.edu.au/view/subjects/260300.html">260000 Earth Sciences > 260300 Geochemistry</a><br /><a href="http://eprints.utas.edu.au/view/subjects/260100.html">260000 Earth Sciences > 260100 Geology</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2614</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Prof Vadim Kamenetsky</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">04 Dec 2007 15:26</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">09 Jan 2008 02:30</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=2614;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&eprintid=2614">item control page</a></p>
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