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  4. 中国科学院地球与行星物理重点实验室
Discovery of coesite from the martian shergottite Northwest Africa 8657

文献类型：期刊论文

作者Hu, Sen2,3,5; Li, Yang1; Gu, Lixin3; Tang, Xu3; Zhang, Ting3; Yamaguchi, Akira4; Lin, Yangting2,3,5; Changela, Hitesh3
刊名GEOCHIMICA ET COSMOCHIMICA ACTA
出版日期2020-10-01
卷号286页码:404-417
关键词Mars Shock metamorphism Coesite Plagioclase
ISSN号0016-7037
DOI10.1016/j.gca.2020.07.021
英文摘要We report occurrences of coesite in a martian meteorite, expanding previously-reported silica polymorphs such as stishovite (El Goresy et al., 2000), seifertite (Sharp et al., 1999; Goresy et al., 2008), and post-stishovite (El Goresy et al., 2000). The coesite was found in the shock-induced melt regions of NWA 8657, usually coexisting with deformed quartz and silica glass. Three morphological types of coesite have been identified: (I) in a silica-maskelynite assemblage, (II) needle grains, and (III) granular grains embedded in maskelynite. Transmission Electron Microscopy (TEM) shows that all types of coesite appear distributed in silica glass and/or nano-phase maskelynite. The stishovite-like morphology of Type II coesite and the presence of deformed quartz suggest coesite to have inverted from stishovite during decompression. The impact-induced peak pressures and temperatures are estimated at similar to 18-30 GPa and similar to 2000 degrees C respectively, based on static high pressure experiments (Langenhorst and Deutsch, 2012; Zhang et al., 1996). The polymorphs aggregates of silica in NWA 8657 indicate that the shock-induced melts in this meteorite cooled slower than those in other stishovite-bearing martian meteorites, but fast enough to preserve coesite. (C) 2020 Elsevier Ltd. All rights reserved.
WOS关键词HIGH-PRESSURE ; SHOCK METAMORPHISM ; LUNAR METEORITE ; FORMER STISHOVITE ; PHASE-TRANSITION ; IMPACT STRUCTURE ; THERMAL HISTORY ; EH3 CHONDRITE ; X-RAY ; POLYMORPH
资助项目National Natural Science Foundation of China[41573057] ; National Natural Science Foundation of China[41430105] ; National Natural Science Foundation of China[41973062] ; China Scholarship Council[201804910284] ; key research program of the Institute of Geology & Geophysics, CAS[IGGCAS-201905]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000561894400008
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; key research program of the Institute of Geology & Geophysics, CAS ; key research program of the Institute of Geology & Geophysics, CAS ; key research program of the Institute of Geology & Geophysics, CAS ; key research program of the Institute of Geology & Geophysics, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; key research program of the Institute of Geology & Geophysics, CAS ; key research program of the Institute of Geology & Geophysics, CAS ; key research program of the Institute of Geology & Geophysics, CAS ; key research program of the Institute of Geology & Geophysics, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; key research program of the Institute of Geology & Geophysics, CAS ; key research program of the Institute of Geology & Geophysics, CAS ; key research program of the Institute of Geology & Geophysics, CAS ; key research program of the Institute of Geology & Geophysics, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; key research program of the Institute of Geology & Geophysics, CAS ; key research program of the Institute of Geology & Geophysics, CAS ; key research program of the Institute of Geology & Geophysics, CAS ; key research program of the Institute of Geology & Geophysics, CAS
源URL[http://ir.iggcas.ac.cn/handle/132A11/97649]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Hu, Sen
作者单位1.Chinese Acad Sci, Ctr Lunar & Planetary Sci, Inst Geochem, Guiyang 550081, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
4.Natl Inst Polar Res, Tokyo 1908518, Japan
5.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Hu, Sen,Li, Yang,Gu, Lixin,et al. Discovery of coesite from the martian shergottite Northwest Africa 8657[J]. GEOCHIMICA ET COSMOCHIMICA ACTA,2020,286:404-417.
APA Hu, Sen.,Li, Yang.,Gu, Lixin.,Tang, Xu.,Zhang, Ting.,...&Changela, Hitesh.(2020).Discovery of coesite from the martian shergottite Northwest Africa 8657.GEOCHIMICA ET COSMOCHIMICA ACTA,286,404-417.
MLA Hu, Sen,et al."Discovery of coesite from the martian shergottite Northwest Africa 8657".GEOCHIMICA ET COSMOCHIMICA ACTA 286(2020):404-417.

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来源：地质与地球物理研究所

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