干旱区生态环境知识资源中心(Arid): Sedimentary and paleobiological records of the latest Pleistocene-Holocene climate evolution in the Kordofan region, Sudan

Arid

DOI	10.1016/j.jafrearsci.2019.103605
	Sedimentary and paleobiological records of the latest Pleistocene-Holocene climate evolution in the Kordofan region, Sudan
	Dawelbeit, Ahmed 1; Jaillard, Etienne 2; Eisawi, Ali 3
通讯作者	Jaillard, Etienne
来源期刊	JOURNAL OF AFRICAN EARTH SCIENCES
ISSN	1464-343X
EISSN	1879-1956
出版年	2019
卷号	160
英文摘要	The study of the Quaternary sediments of the Kordofan region, Sudan, allowed to decipher the succession of environments in this area, since about 13 kyr. The oldest sediments ( > 13 to 10.5 kyr BP) are mainly aeolian deposits, except in the southern areas. The African Humid Period is recorded by scattered palustrine and lacustrine carbonates dated at 10.5-6.5 kyr BP in the center and North, respectively, by fluvial deposits in the South, and by the pedogenesis of previous deposits in all areas. Fluvial activity may be responsible for the erosion of the previous aeolian sands in the southern areas. Between 6.5 and 3.3 kyr BP, the evolution from aquatic to terrestrial gastropod fauna, and from tropical to arid pollen assemblages points to the shift toward an arid climate. This aridification phase culminated between 3.3 and 1.1 kyr BP, with a period of strong aeolian activity and erosion. Aeolian deposition resumed after 1.1 kyr BP under conditions comparable to those of today. This evolution is consistent with that recorded in Saharan areas, although the period of strong aeolian erosion (approximate to 3.3-1.1 kyr BP) may have been underestimated so far.
英文关键词	Quaternary Sedimentary environment Paleobiological indicators Paleoclimate African humid period Aeolian deposits
类型	Article
语种	英语
国家	Sudan ; France
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000496039000005
WOS关键词	AFRICAN HUMID PERIOD ; ENVIRONMENTAL-CHANGE ; EASTERN SAHARA ; ABRUPT SHIFTS ; WADI HOWAR ; LACUSTRINE ; DESERT ; CHAD ; HYDROCLIMATE ; TERMINATION
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
EI主题词	2019-12-01
来源机构	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/2XILL650/311310
作者单位	1.Univ Kordofan, Fac Sci, Dept Geol, Al Ubayyid, Sudan; 2.Univ Grenoble Alpes, CNRS, ISTerre, IFSTTAR, CS 40700, F-38048 Grenoble 9, France; 3.Al Neelain Univ, Fac Petr & Minerals, POB 12702, Khartoum 11121, Sudan
推荐引用方式 GB/T 7714	Dawelbeit, Ahmed,Jaillard, Etienne,Eisawi, Ali. Sedimentary and paleobiological records of the latest Pleistocene-Holocene climate evolution in the Kordofan region, Sudan[J]. French National Research Institute for Sustainable Development,2019,160.
APA	Dawelbeit, Ahmed,Jaillard, Etienne,&Eisawi, Ali.(2019).Sedimentary and paleobiological records of the latest Pleistocene-Holocene climate evolution in the Kordofan region, Sudan.JOURNAL OF AFRICAN EARTH SCIENCES,160.
MLA	Dawelbeit, Ahmed,et al."Sedimentary and paleobiological records of the latest Pleistocene-Holocene climate evolution in the Kordofan region, Sudan".JOURNAL OF AFRICAN EARTH SCIENCES 160(2019).