The discovery of early Paleoproterozoic high-Na trondhjemite in the   northeastern Qaidam basin: Evidence from the drilling core samples

doi:10.1016/j.precamres.2017.04.002

CORC > 北京大学 > 地球与空间科学学院

	The discovery of early Paleoproterozoic high-Na trondhjemite in the northeastern Qaidam basin: Evidence from the drilling core samples
	Yu, Xiangjiang ; Fu, Suotang ; Wang, Zhendong ; Li, Qian ; Guo, Zhaojie
刊名	PRECAMBRIAN RESEARCH
	2017
关键词	Qaidam Early Paleoproterozoic Northern Tibetan Plateau Trondhjemite ZIRCON U-PB CENOZOIC TECTONIC EVOLUTION QINGHAI-TIBET PLATEAU ARCHEAN CONTINENTAL-CRUST NW CHINA CONSTRAINTS SHAN THRUST BELT TARIM CRATON QUANJI MASSIF HF ISOTOPES NORTHWESTERN CHINA
DOI	10.1016/j.precamres.2017.04.002
英文摘要	Deye 1 Well (DY 1 Well) completed in 2013 is the first drilling well that reached the early Paleoproterozoic crystalline basement in the northeastern Qaidam basin. This paper analyzes the drilling core samples from DY 1 Well. Petrology and geochemistry indicate that the drilling core samples belong to high-Na trondhjemite. LA-ICP-MS zircon dating for the drilling core samples yields a weighted mean (207)pb/Pb-206 age of 2383.1 +/- 6.3 Ma, which is consistent with its upper interception age. Meanwhile, the geochemical characteristics and the deformation degree of high-Na trondhjemite are significantly different from its adjacent gneisses and the Mohe quartz-dioritic rocks in the Quanji Massif. It implies that the basement of the Qaidam basin under thick Cenozoic sediments may be different from its surrounding outcrops, and differential crustal attributes lead to intensely differential Cenozoic vertical motions between basins and mountains. Meanwhile, the widespread familiarity between the Qaidam and Tarim basins implies that the basement of the Qaidam basin may be a part of the Tarim Block during the Precambrian. (C) 2017 Elsevier B.V. All rights reserved.; China Postdoctoral Science Foundation [2016M590016]; National Science and Technology Major Project [2017ZX05008-001]; SCI(E); ARTICLE; 615-628; 298
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/471264]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Yu, Xiangjiang,Fu, Suotang,Wang, Zhendong,et al. The discovery of early Paleoproterozoic high-Na trondhjemite in the northeastern Qaidam basin: Evidence from the drilling core samples[J]. PRECAMBRIAN RESEARCH,2017.
APA	Yu, Xiangjiang,Fu, Suotang,Wang, Zhendong,Li, Qian,&Guo, Zhaojie.(2017).The discovery of early Paleoproterozoic high-Na trondhjemite in the northeastern Qaidam basin: Evidence from the drilling core samples.PRECAMBRIAN RESEARCH.
MLA	Yu, Xiangjiang,et al."The discovery of early Paleoproterozoic high-Na trondhjemite in the northeastern Qaidam basin: Evidence from the drilling core samples".PRECAMBRIAN RESEARCH (2017).