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Fertile components of the NE Atlantic mantle - Minor elements and O-isotopes in olivine phenocrysts

Trønnes, R. G. and Erambert, M. and Eiler, J. M. and Debaille, V. (2010) Fertile components of the NE Atlantic mantle - Minor elements and O-isotopes in olivine phenocrysts. Geochimica et Cosmochimica Acta, 74 (12). A1058-A1058. ISSN 0016-7037.

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Primitive off-rift basalts in Iceland and Jan Mayen sample subcontinental lithospheric mantle (SCLM) in addition to the Iceland plume with recycled oceanic crust (ROC) and meltdepleted or primitive lower mantle material [1]. The SCLM/ROC-ratios are high at Jan Mayen (high La/Sm and ^(87)/^(86)Sr and low ^(206)/^(204)Pb, ^(187)/^(188)Os and ^(143)/^(144)Nd), intermediate in the Snæfellsnes Flank Zone and low in the Southern Flank Zone, including Surtsey. The fertile components are also present in tholeiites in the Icelandic rift zones and the NE Atlantic and Arctic ridges, despite larger proportions of melts from refractory asthenosphere. The SCLM/ROC-ratios are high where the distances to the nearest continental margin or the continental Jan Mayen Ridge are relatively short.

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Additional Information:© 2010 Published by Elsevier Ltd.
Issue or Number:12
Record Number:CaltechAUTHORS:20130806-091404815
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Official Citation:Goldschmidt Abstracts 2010 – T, Geochimica et Cosmochimica Acta, Volume 74, Issue 12, Supplement, June 2010, Pages A1018-A1061, ISSN 0016-7037,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:39773
Deposited By: Tony Diaz
Deposited On:09 Aug 2013 20:13
Last Modified:03 Oct 2019 05:10

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