Arid
DOI10.1111/j.1945-5100.2000.tb01977.x
Petrology and chemistry of the new shergottite Dar al Gani 476
Zipfel, J; Scherer, P; Spettel, B; Dreibus, G; Schultz, L
通讯作者Zipfel, J
来源期刊METEORITICS & PLANETARY SCIENCE
ISSN0026-1114
出版年2000
卷号35期号:1页码:95-106
英文摘要

In 1998, Dar al Gani (DaG) 476 was found in the Libyan desert. The meteorite is classified as a basaltic shergottite and is only the 13th martian meteorite known to date. It has a porphyritic texture consisting of a fine-grained groundmass and larger olivines. The groundmass consists of pyroxene and feldspathic glass. Minor phases are oxides and sulfides as well as phosphates. The presence of olivine, orthopyroxene, and chromite is a feature that DaG 476 has in common with lithology A of Elephant Moraine (EET) A79001. However, in Dac 476, these phases appear to be early phenocrysts rather than xenocrysts. Shock features, such as twinning, mosaicism, and impact-melt pockets, are ubiquitous. Terrestrial weathering was severe and led to formation of carbonate veins following grain boundaries and cracks.


With a molar MSO/(MgO + FeO) of 0.68, DaG 476 is the most magnesian member among the basaltic shergottites. Compositions of augite and pigeonite and some of the bulk element concentrations are intermediate between those of Iherzolitic and basaltic shergottites. However, major elements, such as Fe and Ti. as well as LREE concentrations are considerably lower than in other shergottites.


Noble gas concentrations are low and dominated by the mantle component previously found in Chassigny. A component, similar to that representing martian atmosphere, is virtually absent. The ejection age of 1.35 +/- 0.10 Ma is older than that of EETA79001 and could possibly mark a distinct ejection.


类型Article
语种英语
国家Germany
收录类别SCI-E
WOS记录号WOS:000085160100014
WOS关键词ANTARCTIC SHERGOTTITE ; MARTIAN METEORITES ; NOBLE-GASES ; SNC METEORITES ; PETROGENESIS ; LEW88516 ; HISTORY ; ORIGIN ; MAGMA ; CRYSTALLIZATION
WOS类目Geochemistry & Geophysics
WOS研究方向Geochemistry & Geophysics
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/139601
作者单位(1)Max Planck Inst Chem, Abt Kosmochem, D-55020 Mainz, Germany
推荐引用方式
GB/T 7714
Zipfel, J,Scherer, P,Spettel, B,et al. Petrology and chemistry of the new shergottite Dar al Gani 476[J],2000,35(1):95-106.
APA Zipfel, J,Scherer, P,Spettel, B,Dreibus, G,&Schultz, L.(2000).Petrology and chemistry of the new shergottite Dar al Gani 476.METEORITICS & PLANETARY SCIENCE,35(1),95-106.
MLA Zipfel, J,et al."Petrology and chemistry of the new shergottite Dar al Gani 476".METEORITICS & PLANETARY SCIENCE 35.1(2000):95-106.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Zipfel, J]的文章
[Scherer, P]的文章
[Spettel, B]的文章
百度学术
百度学术中相似的文章
[Zipfel, J]的文章
[Scherer, P]的文章
[Spettel, B]的文章
必应学术
必应学术中相似的文章
[Zipfel, J]的文章
[Scherer, P]的文章
[Spettel, B]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。