干旱区生态环境知识资源中心(Arid): Complexity of Saharan paleoclimate reconstruction and implications for modern human migration

Arid

DOI	10.1016/j.epsl.2018.12.015
	Complexity of Saharan paleoclimate reconstruction and implications for modern human migration
	Abotalib, Abotalib Z.1,2; Sultan, Mohamed 3; Jimenez, Gloria 4; Crossey, Laura 5; Karlstrom, Karl 5; Forman, Steven 6; Krishnamurthy, R. V.3; Elkadiri, Racha 7; Polyak, Victor 5
通讯作者	Sultan, Mohamed
来源期刊	EARTH AND PLANETARY SCIENCE LETTERS
ISSN	0012-821X
EISSN	1385-013X
出版年	2019
卷号	508 页码:74-84
英文摘要	Chronological and geochemical data from scarp and scarp-foot depression sediments (SSDS) have been used for deciphering Saharan paleoclimates and patterns of migration of anatomically modern humans (AMH). U-Th dating of thick accumulations of SSDS indicates prevalent deposition during long-lasting cool glacial periods (marine isotope stage [MIS] 6, 8, 10, and 12) and limited deposition during warm interglacial periods (MIS 5, 7 and 13). In contrast, Quaternary sediments associated with short residence, hydrologic systems in Sinai yielded MIS 2 OSL ages of 27.7 to 10.2 ka. The lack of SSDS of MIS 2 ages and the wide range of warm and cool stages in Eastern Sahara is attributed to: (1) lengthy travel times of groundwater prior to discharge and deposition of SSDS from deep groundwater originating from distant sources, and (2) sampling and dating of SSDS from depressions where natural discharge has been apparently continuous through wet and dry periods. Given that the previously dated depression SSDS could have been deposited during dry periods, and that the ages of SSDS reflect the timing of groundwater discharge rather than the ages of the wet periods during which recharge occurred, we suggest that earlier interpretations of Saharan paleoclimate and AMH migrations that heavily relied on dating of SSDS should be revisited. (C) 2018 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license.
英文关键词	paleoclimate of the Sahara U-Th and OSL dating groundwater discharge Nubian Sandstone Aquifer System (NSAS)
类型	Article
语种	英语
国家	USA ; Egypt
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000457504600008
WOS关键词	NUBIAN SANDSTONE AQUIFER ; STABLE-ISOTOPE ANALYSIS ; FOSSIL-SPRING TUFAS ; WESTERN DESERT ; EASTERN SAHARA ; KHARGA OASIS ; GROUNDWATER-FLOW ; PLUVIAL EPISODES ; LATE PLEISTOCENE ; SINAI PENINSULA
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
来源机构	University of Arizona
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215070
作者单位	1.Univ Southern Calif, Viterbi Sch Engn, Los Angeles, CA 90089 USA; 2.Natl Author Remote Sensing & Space Sci, Dept Geol, Cairo 1564, Egypt; 3.Western Michigan Univ, Dept Geol & Environm Sci, Kalamazoo, MI 49008 USA; 4.Univ Arizona, Dept Geosci, Tucson, AZ 85721 USA; 5.Univ New Mexico, Dept Earth & Planetary Sci, Albuquerque, NM 87131 USA; 6.Baylor Univ, Dept Geosci, Waco, TX 76798 USA; 7.Middle Tennessee State Univ, Dept Geosci, Murfreesboro, TN 37132 USA
推荐引用方式 GB/T 7714	Abotalib, Abotalib Z.,Sultan, Mohamed,Jimenez, Gloria,et al. Complexity of Saharan paleoclimate reconstruction and implications for modern human migration[J]. University of Arizona,2019,508:74-84.
APA	Abotalib, Abotalib Z..,Sultan, Mohamed.,Jimenez, Gloria.,Crossey, Laura.,Karlstrom, Karl.,...&Polyak, Victor.(2019).Complexity of Saharan paleoclimate reconstruction and implications for modern human migration.EARTH AND PLANETARY SCIENCE LETTERS,508,74-84.
MLA	Abotalib, Abotalib Z.,et al."Complexity of Saharan paleoclimate reconstruction and implications for modern human migration".EARTH AND PLANETARY SCIENCE LETTERS 508(2019):74-84.