Palynological evidence for abrupt climatic cooling in equatorial Africa at about 43,000-40,000 cal BP

doi:10.1016/j.revpalbo.2017.12.005

CORC > 昆明植物研究所 > 中国科学院昆明植物研究所 > 植物化学与西部植物资源持续利用国家重点实验室

	Palynological evidence for abrupt climatic cooling in equatorial Africa at about 43,000-40,000 cal BP
	Hamilton, Alan 1,3; Taylor, David 2
刊名	REVIEW OF PALAEOBOTANY AND PALYNOLOGY
	2018-03-01
卷号	250 页码:53-59
关键词	Climatic Cooling Quaternary Pollen Analysis Albertine Rift Tectonic Activity
ISSN号	0034-6667
DOI	10.1016/j.revpalbo.2017.12.005
英文摘要	The same basal sequence of two pollen zones is found in three previously published pollen diagrams for widely separated sites situated along highlands adjacent to the Albertine Rift in equatorial Africa. Here evidence is presented that is supportive of the hypothesis that the transition between the zones was contemporaneous at all sites and dates to about 43,000-40,000 cal BP. Environmental interpretation of the sequence indicates that there was a major fall in temperature, depressed temperature thereafter persisting until the transition to the postglacial at 14,000-11,500 cal BP. The climate also became drier. Well-dated sediments of this age are rare in equatorial Africa, so comparisons are scarce. However, there is some evidence from the Eastern Arc Mountains, Tanzania, of a similar climatic event at about the same time. Farther afield, there is good evidence for abrupt climatic deterioration at similar to 40,000 cal BP in western Eurasia, where there was accompanying cultural change. Sedimentary basins along the Albertine Rift-margin highlands are especially well suited for palynologically-based investigations of past temperatures. Their relatively well-defined catchment areas result in reduced inputs of pollen derived from vegetation growing under different climatic conditions. (C) 2018 Elsevier B.V. All rights reserved.
语种	英语
WOS记录号	WOS:000427307900005
内容类型	期刊论文
源URL	[http://ir.kib.ac.cn/handle/151853/60526]
专题	昆明植物研究所_植物化学与西部植物资源持续利用国家重点实验室
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Yunnan, Peoples R China 2.Natl Univ Singapore, Dept Geog, 21 Lower Kent Ridge Rd, Singapore 119077, Singapore 3.128 Busbridge Lane, Godalming GU7 1QJ, Surrey, England
推荐引用方式 GB/T 7714	Hamilton, Alan,Taylor, David. Palynological evidence for abrupt climatic cooling in equatorial Africa at about 43,000-40,000 cal BP[J]. REVIEW OF PALAEOBOTANY AND PALYNOLOGY,2018,250:53-59.
APA	Hamilton, Alan,&Taylor, David.(2018).Palynological evidence for abrupt climatic cooling in equatorial Africa at about 43,000-40,000 cal BP.REVIEW OF PALAEOBOTANY AND PALYNOLOGY,250,53-59.
MLA	Hamilton, Alan,et al."Palynological evidence for abrupt climatic cooling in equatorial Africa at about 43,000-40,000 cal BP".REVIEW OF PALAEOBOTANY AND PALYNOLOGY 250(2018):53-59.