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Fe^(2+)-Mg Partitioning Between Olivine and Martian Basaltic Melts

Matzen, A. K. and Beckett, J. R. and Baker, M. B. and Stolper, E. M. (2011) Fe^(2+)-Mg Partitioning Between Olivine and Martian Basaltic Melts. Meteoritics and Planetary Science, 46 (S1). A150-A150. ISSN 1086-9379.

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The partitioning of elements between olivine and liquid is key to understanding igneous processes in mafic and ultramafic systems [1]. The landmark study of Roeder and Emslie [2] concluded that the olivine (ol)-liquid (liq) exchange coefficient, K_(D,Fe2+-Mg) = (FeO/MgO)^(ol) / (FeO/MgO)^(liq) (by weight), is 0.30 ± 0.03, independent of temperature (T) and liquid composition. Subsequent work [3] has shown a dependence on liquid composition, but the canonical value of 0.30 is still widely used in both terrestrial and Martian applications [e.g., 4, 5]. Here, we use previously published experiments on bulk compositions relevant to Martian magmas to determine the appropriate K_(D,Fe2+-Mg)(s) for Martian systems; we then use this value to test whether any of the ol-phyric shergottites represent liquids.

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Stolper, E. M.0000-0001-8008-8804
Additional Information:© 2011 The Meteoritical Society. Article first published online: 25 Jul. 2011.
Issue or Number:S1
Record Number:CaltechAUTHORS:20130301-111741242
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Official Citation:74th Annual Meeting of the Meteoritical Society, August 8–12, 2011, London, U.K. Meteoritics & Planetary Science, 46: A3–A264. doi: 10.1111/j.1945-5100.2011.01221.x
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:37244
Deposited By: Tony Diaz
Deposited On:06 Mar 2013 16:58
Last Modified:03 Oct 2019 04:45

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