Arid
DOI10.1016/j.jafrearsci.2017.07.022
Meteorite falls in Africa
Khiri, Fouad1,2; Ibhi, Abderrahmane1; Saint-Gerant, Thierry3; Medjkane, Mohand3; Ouknine, Lahcen1
通讯作者Khiri, Fouad
来源期刊JOURNAL OF AFRICAN EARTH SCIENCES
ISSN1464-343X
EISSN1879-1956
出版年2017
卷号134页码:644-657
英文摘要

The study of meteorites provides insight into the earliest history of our solar system. From 1800, about the year meteorites were first recognized as objects falling from the sky, until December 2014, 158 observed meteorite falls were recorded in Africa. Their collected mass ranges from 1.4 g to 175 kg with the 1-10 kg cases predominant. The average rate of African falls is low with only one fall recovery per 1.35-year time interval (or 0.023 per year per million km(2)).


This African collection is dominated by ordinary chondrites (78%) just like in the worldwide falls. The seventeen achondrites include three Martian meteorite falls (Nakhla of Egypt, Tissint of Morocco and Zagami of Nigeria). Observed Iron meteorite falls are relatively rare and represent only 5%.


The falls’ rate in Africa is variable in time and in space. The number of falls continues to grow since 1860, 80% of which were recovered during the period between 1910 and 2014. Most of these documented meteorite falls have been recovered from North-Western Africa, Eastern Africa and Southern Africa. They are concentrated in countries which have a large surface area and a large population with a uniform distribution. Other factors are also favorable for observing and collecting meteorite falls across the African territory, such as: a genuine meteorite education, a semi-arid to arid climate (clear sky throughout the year most of the time), croplands or sparse grasslands and possible access to the fall location with a low percentage of forest cover and dense road network. (C) 2017 Elsevier Ltd. All rights reserved.


英文关键词Observed meteorite falls Africa Statistics Classification Distribution factors
类型Article
语种英语
国家Morocco ; France
收录类别SCI-E
WOS记录号WOS:000412609000054
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/199953
作者单位1.Univ Ibn Zohr, Geoheritage & Geomat Lab, Agadir, Morocco;
2.Reg Ctr Trades Educ & Training, Inzegane, Agadir, Morocco;
3.Univ Caen, IDEES, Caen, France
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GB/T 7714
Khiri, Fouad,Ibhi, Abderrahmane,Saint-Gerant, Thierry,et al. Meteorite falls in Africa[J],2017,134:644-657.
APA Khiri, Fouad,Ibhi, Abderrahmane,Saint-Gerant, Thierry,Medjkane, Mohand,&Ouknine, Lahcen.(2017).Meteorite falls in Africa.JOURNAL OF AFRICAN EARTH SCIENCES,134,644-657.
MLA Khiri, Fouad,et al."Meteorite falls in Africa".JOURNAL OF AFRICAN EARTH SCIENCES 134(2017):644-657.
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