Complex Formation History of Highly Evolved Basaltic Shergottite, Zagami
Zagami, a basaltic shergottite, contains several kinds of lithologies such as Normal Zagami consisting of Fine-grained (FG) and Coarse-grained (CG), Dark Mottled lithology (DML), and Olivine-rich late-stage melt pocket (DN). Treiman and Sutton concluded that Zagami (Normal Zagami) is a fractional cr...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20120011726 2023-05-15T16:01:24+02:00 Complex Formation History of Highly Evolved Basaltic Shergottite, Zagami Nyquist, L. E. Niihara, T. Park, J. Mikouchi, T. Hirata, D. Misawa, K. Unclassified, Unlimited, Publicly available [2012] application/pdf http://hdl.handle.net/2060/20120011726 unknown Document ID: 20120011726 http://hdl.handle.net/2060/20120011726 Copyright, Distribution as joint owner in the copyright CASI Lunar and Planetary Science and Exploration JSC-CN-26537 75th annual Metting of the Meteoritical Society; 12-17 Aug. 2012; Cairns; Australia 2012 ftnasantrs 2019-07-21T00:49:19Z Zagami, a basaltic shergottite, contains several kinds of lithologies such as Normal Zagami consisting of Fine-grained (FG) and Coarse-grained (CG), Dark Mottled lithology (DML), and Olivine-rich late-stage melt pocket (DN). Treiman and Sutton concluded that Zagami (Normal Zagami) is a fractional crystallization product from a single magma. It has been suggested that there were two igneous stages (deep magma chamber and shallow magma chamber or surface lava flow) on the basis of chemical zoning features of pyroxenes which have homogeneous Mg-rich cores and FeO, CaO zoning at the rims. Nyquist et al. reported that FG has a different initial Sr isotopic ratio than CG and DML, and suggested the possibility of magma mixing on Mars. Here we report new results of petrology and mineralogy for DML and the Olivine-rich lithology (we do not use DN here), the most evolved lithology in this rock, to understand the relationship among lithologies and reveal Zagami s formation history Other/Unknown Material DML NASA Technical Reports Server (NTRS) |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Lunar and Planetary Science and Exploration |
spellingShingle |
Lunar and Planetary Science and Exploration Nyquist, L. E. Niihara, T. Park, J. Mikouchi, T. Hirata, D. Misawa, K. Complex Formation History of Highly Evolved Basaltic Shergottite, Zagami |
topic_facet |
Lunar and Planetary Science and Exploration |
description |
Zagami, a basaltic shergottite, contains several kinds of lithologies such as Normal Zagami consisting of Fine-grained (FG) and Coarse-grained (CG), Dark Mottled lithology (DML), and Olivine-rich late-stage melt pocket (DN). Treiman and Sutton concluded that Zagami (Normal Zagami) is a fractional crystallization product from a single magma. It has been suggested that there were two igneous stages (deep magma chamber and shallow magma chamber or surface lava flow) on the basis of chemical zoning features of pyroxenes which have homogeneous Mg-rich cores and FeO, CaO zoning at the rims. Nyquist et al. reported that FG has a different initial Sr isotopic ratio than CG and DML, and suggested the possibility of magma mixing on Mars. Here we report new results of petrology and mineralogy for DML and the Olivine-rich lithology (we do not use DN here), the most evolved lithology in this rock, to understand the relationship among lithologies and reveal Zagami s formation history |
format |
Other/Unknown Material |
author |
Nyquist, L. E. Niihara, T. Park, J. Mikouchi, T. Hirata, D. Misawa, K. |
author_facet |
Nyquist, L. E. Niihara, T. Park, J. Mikouchi, T. Hirata, D. Misawa, K. |
author_sort |
Nyquist, L. E. |
title |
Complex Formation History of Highly Evolved Basaltic Shergottite, Zagami |
title_short |
Complex Formation History of Highly Evolved Basaltic Shergottite, Zagami |
title_full |
Complex Formation History of Highly Evolved Basaltic Shergottite, Zagami |
title_fullStr |
Complex Formation History of Highly Evolved Basaltic Shergottite, Zagami |
title_full_unstemmed |
Complex Formation History of Highly Evolved Basaltic Shergottite, Zagami |
title_sort |
complex formation history of highly evolved basaltic shergottite, zagami |
publishDate |
2012 |
url |
http://hdl.handle.net/2060/20120011726 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
DML |
genre_facet |
DML |
op_source |
CASI |
op_relation |
Document ID: 20120011726 http://hdl.handle.net/2060/20120011726 |
op_rights |
Copyright, Distribution as joint owner in the copyright |
_version_ |
1766397276983394304 |