干旱区生态环境知识资源中心(Arid): A minimum Thanetian (Paleocene) age for the African Surface in the Eritrean highlands, Northeast Africa

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DOI	10.1016/j.jafrearsci.2020.103782
	A minimum Thanetian (Paleocene) age for the African Surface in the Eritrean highlands, Northeast Africa
	Perello, Jose 1; Brockway, Humberto 2; Garcia, Alfredo 3
通讯作者	Perello, Jose
来源期刊	JOURNAL OF AFRICAN EARTH SCIENCES
ISSN	1464-343X
EISSN	1879-1956
出版年	2020
卷号	164
英文摘要	Supergene alunite from a supergene leached capping zone in the Daero Paulos area near Asmara, Eritrea yields Thanetian (late Paleocene) K-Ar ages of 58.6 +/- 2.3 and 59.4 +/- 2.3 Ma. The leached capping is exposed in an erosional window through a laterite profile, with the supergene alunite forming by oxidation of pyrite contained in quartz veinlet stockworks hosted by porphyry copper-related, felsic porphyry and adjacent volcano-sedimentary country rocks. Geologic relationships show that the leached capping and contained supergene alunite formed simultaneously with the lateritic weathering event that accompanied regional planation of equatorial and subequatorial Afro-Arabia to form the African Surface. Landscape modification of the central Ethiopian-Eritrean plateau by incision of transverse valleys and canyons commenced in the Oligocene, with a principal exhumation event occurring in the Miocene in response to swell-induced rift-flank uplift during Red Sea opening.
英文关键词	African Surface Eritrea Laterite Supergene alunite Paleocene
类型	Article
语种	英语
国家	Chile ; Spain
收录类别	SCI-E
WOS记录号	WOS:000526109500017
WOS关键词	SOUTHERN RED-SEA ; APATITE FISSION-TRACK ; PORPHYRY COPPER-DEPOSIT ; ARABIAN-NUBIAN-SHIELD ; LANDSCAPE EVOLUTION ; ATACAMA-DESERT ; GOLD DEPOSITS ; (U-TH)/HE THERMOCHRONOMETRY ; AR-40/AR-39 GEOCHRONOLOGY ; GEOMORPHIC DEVELOPMENT
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314844
作者单位	1.Antofagasta Minerals, Apoquindo 4001,Piso 18, Santiago, Chile; 2.Plaza Flor 11, Valladolid 47300, Spain; 3.Ave Kennedy 4820,Dept 42, Santiago, Chile
推荐引用方式 GB/T 7714	Perello, Jose,Brockway, Humberto,Garcia, Alfredo. A minimum Thanetian (Paleocene) age for the African Surface in the Eritrean highlands, Northeast Africa[J],2020,164.
APA	Perello, Jose,Brockway, Humberto,&Garcia, Alfredo.(2020).A minimum Thanetian (Paleocene) age for the African Surface in the Eritrean highlands, Northeast Africa.JOURNAL OF AFRICAN EARTH SCIENCES,164.
MLA	Perello, Jose,et al."A minimum Thanetian (Paleocene) age for the African Surface in the Eritrean highlands, Northeast Africa".JOURNAL OF AFRICAN EARTH SCIENCES 164(2020).