Arid
DOI10.1111/maps.13073
The Kumtag 016L5 strewn field, Xinjiang Province, China
Zeng, Xiaojia1,2; Li, Shijie1; Leya, Ingo3; Wang, Shijie4; Smith, Thomas3; Li, Yang1; Wang, Peng5
通讯作者Li, Shijie
来源期刊METEORITICS & PLANETARY SCIENCE
ISSN1086-9379
EISSN1945-5100
出版年2018
卷号53期号:6页码:1113-1130
英文摘要

The Kumtag 016 strewn field was found in the eastern part of the Kumtag desert, Xinjiang Province, China. In this study, 24 recovered meteorites have been characterized by a suite of different analytical techniques to investigate their petrography, mineralogy, bulk trace elements, noble gas isotopic composition, density, and porosity. We attribute to the strewn field 22 L5 chondrites with shock stage S4 and weathering grade W2-W3. Two different meteorites, Kumtag 021, an L4 chondrite and Kumtag 032, an L6 chondrite, were recognized within the strewn field area. Moreover, Kumtag 003, an H5 chondrite, was previously found in the same area. We infer that the Kumtag 016 strewn field most likely consists of at least four distinct meteorite falls. The effects of terrestrial weathering on the studied meteorites involve sulfide/metal alteration, chemical changes (Sr, Ba, Pb, and U enrichments and depletion in Cr, Co, Ni, and Cs abundances), and physical modifications (decrease of grain density and porosity). Measurements of the light noble gases indicate that the analyzed Kumtag L5 samples contain solar wind-implanted noble gases with a Ne-20/Ne-22 ratio of similar to 12.345. The cosmic-ray exposure (CRE) ages of the L5 chondrites are in a narrow range (3.6 +/- 1.4Ma to 5.2 +/- 0.4Ma). For L4 chondrite Kumtag 021 and L6 chondrite Kumtag 032, the CRE ages are 5.9 +/- 0.4Ma and 4.7 +/- 0.8Ma, respectively.


类型Article
语种英语
国家Peoples R China ; Switzerland
收录类别SCI-E
WOS记录号WOS:000434152200001
WOS关键词C-14 TERRESTRIAL AGES ; NOBLE-GASES ; EXPOSURE HISTORY ; COLLISIONAL HISTORY ; ORDINARY CHONDRITES ; ATACAMA DESERT ; H-CHONDRITES ; METEORITES ; SHOCK ; HOT
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/2XILL650/211632
作者单位1.Chinese Acad Sci, Ctr Lunar & Planetary Sci, Inst Geochem, Guiyang 550081, Guizhou, Peoples R China;
2.Univ Chinese Acad Sci, Beijing 10049, Peoples R China;
3.Univ Bern, Inst Phys, CH-3012 Bern, Switzerland;
4.Chinese Acad Sci, State Key Lab Environm Geochem, Inst Geochem, Guiyang 550081, Guizhou, Peoples R China;
5.Sixth Geol Brigade, Div Mines & Geol, Hami 839000, Peoples R China
推荐引用方式
GB/T 7714
Zeng, Xiaojia,Li, Shijie,Leya, Ingo,et al. The Kumtag 016L5 strewn field, Xinjiang Province, China[J],2018,53(6):1113-1130.
APA Zeng, Xiaojia.,Li, Shijie.,Leya, Ingo.,Wang, Shijie.,Smith, Thomas.,...&Wang, Peng.(2018).The Kumtag 016L5 strewn field, Xinjiang Province, China.METEORITICS & PLANETARY SCIENCE,53(6),1113-1130.
MLA Zeng, Xiaojia,et al."The Kumtag 016L5 strewn field, Xinjiang Province, China".METEORITICS & PLANETARY SCIENCE 53.6(2018):1113-1130.
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