气候变化领域集成服务门户(CCPortal): Paleoproterozoic-Paleozoic tectonic evolution of the Longshou Shan, western North China craton

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DOI	10.1130/GES02491.1
	Paleoproterozoic-Paleozoic tectonic evolution of the Longshou Shan, western North China craton
	Wu, Chen; Li, Jie; Zuza, Andrew, V; Haproff, Peter J.; Yin, An; Ding, Lin
通讯作者	Wu, C (通讯作者)
发表日期	2022
ISSN	1553-040X
起始页码	1177
结束页码	1193
卷号	18 期号:3
英文摘要	The Longshou Shan of western China is the northern backstop of the Cenozoic Himalayan-Tibetan orogen and occupies a key linkage between the Tarim continent and North China craton which separate the pre-Cenozoic Tethyan orogenic system and Central Asian orogenic system. Therefore, the Paleoproterozoic-Paleozoic evolution of this region is critical to understanding the extent of overprinting Cenozoic deformation, construction of the Eurasian continent, and relationships between the pre-Cenozoic Tethyan orogenic system and Central Asian orogenic system. Here we present detailed field observations and results of geochronological and major and trace element and Sr-Nd isotope geochemical analyses of samples from the Longshou Shan to decipher its complex Paleoproterozoic-Paleozoic tectonic history. Our results show that the Paleoproterozoic basement rocks of the Longshou Shan were part of the North China craton and involved in Paleoproterozoic northern North China orogeny. A ca. 965 Ma granitoid in the Longshou Shan provides key evidence for a spatial linkage between northern Tibetan continents, the North Tarim continent, and the North China craton in the early Neoproterozoic. The presence of Early Ordovician granitoids and arc volcanic rocks in the Longshou Shan suggest that bivergent subduction of Qilian oceanic lithosphere occurred during the early Paleozoic. Crustal shortening and thickening during Ordovician-Carboniferous orogenesis are evidenced by the presence of several unconformities in the Longshou Shan. Late Carboniferous arc granites exposed in the study area are likely associated with the southward subduction of the Paleo-Asian Ocean to the north and with Permian siliciclastic strata sourced from a proximal arc-subduction system, based on detrital zircon ages. Although the tectonic history of the Longshou Shan can be traced back to Neoproterozoic time, most of the recorded deformation and uplift of the region occurred during the early Paleozoic Qilian orogeny and late Paleozoic Central Asian orogeny. Furthermore, we interpret that the several orogenic events recorded in the Longshou Shan (i.e., northern North China, Qilian, and Central Asian orogenies) are spatially and temporally correlative along strike with those recorded in the Tarim and North China cratons.
关键词	SOLONKER SUTURE ZONE ALXA BLOCK SOUTHERN MARGIN NW CHINA CENOZOIC DEFORMATION IGNEOUS PROVINCE INNER-MONGOLIA QAIDAM BASIN ASIAN OCEAN QILIAN SHAN
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000803850000003
来源期刊	GEOSPHERE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260750
推荐引用方式 GB/T 7714	Wu, Chen,Li, Jie,Zuza, Andrew, V,et al. Paleoproterozoic-Paleozoic tectonic evolution of the Longshou Shan, western North China craton[J]. 中国科学院青藏高原研究所,2022,18(3).
APA	Wu, Chen,Li, Jie,Zuza, Andrew, V,Haproff, Peter J.,Yin, An,&Ding, Lin.(2022).Paleoproterozoic-Paleozoic tectonic evolution of the Longshou Shan, western North China craton.GEOSPHERE,18(3).
MLA	Wu, Chen,et al."Paleoproterozoic-Paleozoic tectonic evolution of the Longshou Shan, western North China craton".GEOSPHERE 18.3(2022).