Origin of a metamorphosed lithic clast in CM chondrite Grove Mountains 021536

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 天体化学和行星科学实验室

	Origin of a metamorphosed lithic clast in CM chondrite Grove Mountains 021536
	Zhang, Aicheng 1,2; Guan, Yunbin 3; Hsu, Weibiao 1,4; Liu, Yang 2; Taylor, Lawrence A.2
刊名	METEORITICS & PLANETARY SCIENCE
	2010-02-01
卷号	45 期号:2 页码:238-245
关键词	NINGQIANG CARBONACEOUS CHONDRITE R CHONDRITES MINERALOGY OLIVINE INCLUSIONS CHONDRULES CHEMISTRY RUMURUTI PHOSPHORUS METEORITES
ISSN号	1086-9379
英文摘要	A metamorphosed lithic clast was discovered in the CM chondrite Grove Mountains 021536, which was collected in the Antarctica by the Chinese Antarctic Research Exploration team. The lithic clast is composed mainly of Fe-rich olivine (Fo(62)) with minor diopside (Fs(9.7-11.1)Wo(48.3-51.6)), plagioclase (An(43-46.5)), nepheline, merrillite, Al-rich chromite (21.8 wt% Al(2)O(3); 4.43 wt% TiO(2)), and pentlandite. Delta 17O values of olivine in the lithic clast vary from -3.9 parts per thousand to -0.8 parts per thousand. Mineral compositions and oxygen isotopic compositions of olivine suggest that the lithic clast has an exotic source different from the CM chondrite parent body. The clast could be derived from strong thermal metamorphism of pre-existing chondrule that has experienced low-temperature anhydrous alteration. The lithic clast is similar in mineral assemblage and chemistry to a few clasts observed in oxidized CV3 chondrites (Mokoia and Yamato-86009) and might have been derived from the interior of the primitive CV asteroid. The apparent lack of hydration in the lithic clast indicates that the clast accreted into the CM chondrite after hydration of the CM components.
学科主题	Geochemistry & Geophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Geochemistry & Geophysics
研究领域[WOS]	Geochemistry & Geophysics
关键词[WOS]	NINGQIANG CARBONACEOUS CHONDRITE ; R CHONDRITES ; MINERALOGY ; OLIVINE ; INCLUSIONS ; CHONDRULES ; CHEMISTRY ; RUMURUTI ; PHOSPHORUS ; METEORITES
收录类别	SCI
语种	英语
WOS记录号	WOS:000278312100008
公开日期	2011-11-23
内容类型	期刊论文
源URL	[http://159.226.72.40/handle/332002/1169]
专题	紫金山天文台_天体化学和行星科学实验室
作者单位	1.Purple Mt Observ, Lunar & Planetary Sci Ctr, Lab Astrochem & Planetary Sci, Nanjing 210008, Peoples R China 2.Univ Tennessee, Planetary Geosci Inst, Dept Earth & Planetary Sci, Knoxville, TN 37996 USA 3.CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA 4.China Univ Geosci, Fac Earth Sci, Wuhan 430074, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Aicheng,Guan, Yunbin,Hsu, Weibiao,et al. Origin of a metamorphosed lithic clast in CM chondrite Grove Mountains 021536[J]. METEORITICS & PLANETARY SCIENCE,2010,45(2):238-245.
APA	Zhang, Aicheng,Guan, Yunbin,Hsu, Weibiao,Liu, Yang,&Taylor, Lawrence A..(2010).Origin of a metamorphosed lithic clast in CM chondrite Grove Mountains 021536.METEORITICS & PLANETARY SCIENCE,45(2),238-245.
MLA	Zhang, Aicheng,et al."Origin of a metamorphosed lithic clast in CM chondrite Grove Mountains 021536".METEORITICS & PLANETARY SCIENCE 45.2(2010):238-245.