干旱区生态环境知识资源中心(Arid): Tectonic and Paleoclimatic Setting for Hominin Evolution in Eastern Africa

Arid

DOI	10.2138/gselements.19.2.82
	Tectonic and Paleoclimatic Setting for Hominin Evolution in Eastern Africa
	Olaka, Lydia; Ebinger, Cynthia J.
通讯作者	Olaka, L
来源期刊	ELEMENTS
ISSN	1811-5209
EISSN	1811-5217
出版年	2023
卷号	19 期号:2 页码:82-87
英文摘要	As dynamic processes in the Earth's mantle stretch and thin large sectors of the African plate, broad plateaus interrupted by deep valleys and flanking mountains have formed at the Earth's surface. These vertical and horizontal crustal movements occur concurrent with global climate changes, both of which happen over diverse spatial and temporal scales. Together, they modulated eastern Africa's habitats for early hominins, and for flora and fauna in general. The habitat for hominin evolution, therefore, is shaped by bottomup and top-down processes. Broad plateau uplift in Ethiopia had initiated by 30 Ma, coincident with or after flood magmatism at 45 Ma when dry seasonal woodland environments initiated in eastern Africa. The fossil-rich sedimentary sequences partially filling the 30-70-km-wide rift basins record the history of human evolution, as well as the complex interplay between climate change, uplift, volcanism, and faulting in equatorial Africa. The lake shorelines and hydrothermal systems served as oases for hunter-gatherers, and the rough topography of the faulted landscape may have served as refugia. Here, we outline the relevant time-space patterns to establish the geodynamic and paleoclimatic context for human evolution in eastern Africa.
英文关键词	plateau uplift paleoclimate hydrology geodynamics eastern Africa rift
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001030465500004
WOS关键词	CLIMATE-CHANGE ; DIVERSITY ; TANZANIA ; PATTERNS ; UPLIFT
WOS类目	Geochemistry & Geophysics ; Mineralogy
WOS研究方向	Geochemistry & Geophysics ; Mineralogy
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396048
推荐引用方式 GB/T 7714	Olaka, Lydia,Ebinger, Cynthia J.. Tectonic and Paleoclimatic Setting for Hominin Evolution in Eastern Africa[J],2023,19(2):82-87.
APA	Olaka, Lydia,&Ebinger, Cynthia J..(2023).Tectonic and Paleoclimatic Setting for Hominin Evolution in Eastern Africa.ELEMENTS,19(2),82-87.
MLA	Olaka, Lydia,et al."Tectonic and Paleoclimatic Setting for Hominin Evolution in Eastern Africa".ELEMENTS 19.2(2023):82-87.