干旱区生态环境知识资源中心(Arid): Characteristics of the Sahara as a meteorite recovery surface

Arid

DOI	10.1111/maps.13398
	Characteristics of the Sahara as a meteorite recovery surface
	Aboulahris, Maria; Aoudjehane, Hasnaa Chennaoui; Rochette, Pierre; Gattacceca, Jerome; Jull, A. J. Timothy; Ouazaa, Nejia Laridhi; Folco, Luigi; Buhl, Svend
通讯作者	Aboulahris, M (corresponding author), Univ Hassan II Casablanca, Fac Sci Ain Chock, Lab GAIA, Km 8 Route Jadida,BP 5366, Casablanca 20100, Morocco. ; Aboulahris, M (corresponding author), Aix Marseille Univ, Coll France, CEREGE UM34, CNRS,IRD,INRA, Technopole Arbois BP8, F-13545 Aix En Provence, France.
来源期刊	METEORITICS & PLANETARY SCIENCE
ISSN	1086-9379
EISSN	1945-5100
出版年	2019
卷号	54 期号:12
英文摘要	We describe the geological, geomorphological, and paleoclimatic setting of the Sahara of North Africa in particular, focused on the main meteorite dense collection areas (DCA; Morocco, Algeria, Tunisia, and Libya). We report on the outcome of several meteorite recovery field expeditions in Morocco and Tunisia since 2008, by car and by foot, that applied systematic search methods. The number of meteorites collected is 41 ordinary chondrites and one brachinite. The statistics of unpaired ordinary chondrites indicates that H chondrites are more abundant (21) than L chondrites (12), while LL chondrites are rare (2). Our meteorite density estimates for Tunisia and Morocco are in the order of magnitude of 1 met km(-2). An estimate of the total maximum number of meteorites that could be recovered from the Sahara is 780,000 meteorites. We selected 23 meteorites from Aridal, Bou Kra, Bir Zar, and Tieret DCAs for C-14 dating. The results show a wide range of terrestrial ages from 0.4 to more than 40 kyr with a majority of meteorites showing ages between 0.4 and 20 kyr. The weathering degree of these meteorites is ranges from minor (W1) to strong (W4). The highest weathering grades result from repeated oscillations between high and low humidity in the Sahara. However, there appears to be no correlation between weathering grade and terrestrial age of meteorites.
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000599717400003
WOS关键词	C-14 TERRESTRIAL AGES ; ORDINARY CHONDRITES ; COLLECTION AREA ; ATACAMA DESERT ; CLASSIFICATION ; FLUX ; BULLETIN ; HOT ; SEARCH ; OMAN
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
来源机构	University of Arizona ; French National Research Institute for Sustainable Development
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369772
作者单位	[Aboulahris, Maria; Aoudjehane, Hasnaa Chennaoui] Univ Hassan II Casablanca, Fac Sci Ain Chock, Lab GAIA, Km 8 Route Jadida,BP 5366, Casablanca 20100, Morocco; [Aboulahris, Maria; Rochette, Pierre; Gattacceca, Jerome] Aix Marseille Univ, Coll France, CEREGE UM34, CNRS,IRD,INRA, Technopole Arbois BP8, F-13545 Aix En Provence, France; [Jull, A. J. Timothy] Univ Arizona, Dept Geosci, Arizona AMS Lab, Tucson, AZ 85721 USA; [Ouazaa, Nejia Laridhi] Univ Tunis El Manar, Fac Sci, Dept Geol, El Manar Tunis 2092, Tunisia; [Folco, Luigi] Univ Pisa, Dipartimento Sci Terra, VS Maria 53, I-56126 Pisa, Italy; [Buhl, Svend] Meteorite Recon, Muhlendamm 86, D-22087 Hamburg, Germany
推荐引用方式 GB/T 7714	Aboulahris, Maria,Aoudjehane, Hasnaa Chennaoui,Rochette, Pierre,et al. Characteristics of the Sahara as a meteorite recovery surface[J]. University of Arizona, French National Research Institute for Sustainable Development,2019,54(12).
APA	Aboulahris, Maria.,Aoudjehane, Hasnaa Chennaoui.,Rochette, Pierre.,Gattacceca, Jerome.,Jull, A. J. Timothy.,...&Buhl, Svend.(2019).Characteristics of the Sahara as a meteorite recovery surface.METEORITICS & PLANETARY SCIENCE,54(12).
MLA	Aboulahris, Maria,et al."Characteristics of the Sahara as a meteorite recovery surface".METEORITICS & PLANETARY SCIENCE 54.12(2019).