干旱区生态环境知识资源中心(Arid): A statistical analysis of the H/L ratio of ordinary chondrite finds and falls: A comparison of Oman finds with other populations

Arid

DOI	10.1111/maps.13410
	A statistical analysis of the H/L ratio of ordinary chondrite finds and falls: A comparison of Oman finds with other populations
	Kouvatsis, Ioannis 1,2; Hofmann, Beda A.1,2
通讯作者	Kouvatsis, Ioannis
来源期刊	METEORITICS & PLANETARY SCIENCE
ISSN	1086-9379
EISSN	1945-5100
出版年	2020
卷号	55 期号:1 页码:67-76
英文摘要	Hot and cold deserts have been thoroughly searched for meteorites in the past decades, which has led to a large inventory of classified meteorites. H- and L-chondrites are the most abundant meteorites in all collections, and many authors used the H/L ratio as a characteristic parameter in comparing meteorite populations. H/L ratios (after pairing) vary from 0.90 in observed falls up to 1.74 in El Medano (Atacama Desert). In this study, we investigate the H/L ratio of 965 unpaired H- and L-chondrites collected in Oman and compare this population with observed falls and other hot desert collections. We find a mass dependence of the H/L ratio among hot desert finds and identify mechanisms such as fragmentation during weathering and fall that have an impact on the H/L ratio. We employ the Kolmogorov-Smirnov and Mann-Whitney U statistical tests to compare the mass distributions of H- and L-chondrites and to test the relationship between the similarity of mass distributions and the H/L ratio. We conclude that the variations of the H/L ratios observed in various populations are a sampling artifact resulting from secondary effects and observational bias, expressed in differences of the H and L mass distributions which are not observed in falls, and not due to variations in H/L of the meteorite flux. The H/L ratio of 0.90 observed among recent falls is considered as most representative for the overall meteorite flux, at least since the Late Pleistocene.
类型	Article
语种	英语
国家	Switzerland
收录类别	SCI-E
WOS记录号	WOS:000493781400001
WOS关键词	METEORITE COLLECTION AREA ; C-14 TERRESTRIAL AGES ; FLUX
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
EI主题词	2019-11-03
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310737
作者单位	1.Univ Bern, Inst Geol Sci, Baltzerstr 1 3, CH-3012 Bern, Switzerland; 2.Nat Hist Museum Bern, Bernastr 15, CH-3005 Bern, Switzerland
推荐引用方式 GB/T 7714	Kouvatsis, Ioannis,Hofmann, Beda A.. A statistical analysis of the H/L ratio of ordinary chondrite finds and falls: A comparison of Oman finds with other populations[J],2020,55(1):67-76.
APA	Kouvatsis, Ioannis,&Hofmann, Beda A..(2020).A statistical analysis of the H/L ratio of ordinary chondrite finds and falls: A comparison of Oman finds with other populations.METEORITICS & PLANETARY SCIENCE,55(1),67-76.
MLA	Kouvatsis, Ioannis,et al."A statistical analysis of the H/L ratio of ordinary chondrite finds and falls: A comparison of Oman finds with other populations".METEORITICS & PLANETARY SCIENCE 55.1(2020):67-76.