气候变化领域集成服务门户(CCPortal): Provenance of Early Carboniferous clastic sedimentary rocks in the Lhasa Block, Tibet: Insights into the paleogeography and tectonic evolution of the northern margin of East Gondwana

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DOI	10.1016/j.jseaes.2023.105797
	Provenance of Early Carboniferous clastic sedimentary rocks in the Lhasa Block, Tibet: Insights into the paleogeography and tectonic evolution of the northern margin of East Gondwana
	Duan, Meng-Long; Xie, Chao-Ming; Wang, Bin; Song, Yu-Hang; Li, Wen-qing; Hao, Yu-jie
发表日期	2023
ISSN	1367-9120
EISSN	1878-5786
卷号	256
英文摘要	The Lhasa Block was located at the northern margin of East Gondwana before it drifted away, but its exact paleogeographic location in the Late Paleozoic remains controversial. The Late Paleozoic strata in the Lhasa Block, especially the Lower Carboniferous, for which the rock assemblage and sedimentary age have been described but the in-depth research on provenance and tectonic environment are still lacking, may provide vital information about its paleogeographic location. This study presents a systematic field geological survey of the Lower Carboniferous Yongzhu Formation, along with U-Pb dating and Hf isotope analysis of detrital zircons. The detrital zircons U-Pb data revealed major age peaks at 530 and 980 Ma as well as several subordinate age peaks at 784, 890, 1160, 1514, 1690, 2480, and 2600 Ma. The Hf isotopes of the detrital zircons showed similarity with zircons from the Indian continent on the age peaks at 980 and 890 Ma and with those from the Australian continent on the age peaks at 1160 and 2600 Ma, which indicates mixed provenance for the Yongzhu Formation. From this study, we infer that the Lhasa Block might have been located at the northern margin of the Indian and Australian continents during the Early Carboniferous. The weaker age peak at 1160 Ma of the Lower Carboniferous compared to the Pre-Carboniferous and Upper Carboniferous-Lower Permian might be related to the opening of the Sumdo Paleo-Tethys Ocean.
关键词	Gondwana Lhasa Block Carboniferous Detrital zircon Hf isotope
英文关键词	ZIRCON U-PB; HF ISOTOPES; DETRITAL ZIRCONS; TENGCHONG BLOCK; SOUTHERN TIBET; TRACE-ELEMENT; OCEANIC-CRUST; SUMDO AREA; TERRANE; GEOCHRONOLOGY
WOS研究方向	Geosciences, Multidisciplinary
WOS记录号	WOS:001047411100001
来源期刊	JOURNAL OF ASIAN EARTH SCIENCES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283510
作者单位	Jilin University; Ministry of Natural Resources of the People's Republic of China; Jilin University; Jilin University; Jilin University
推荐引用方式 GB/T 7714	Duan, Meng-Long,Xie, Chao-Ming,Wang, Bin,et al. Provenance of Early Carboniferous clastic sedimentary rocks in the Lhasa Block, Tibet: Insights into the paleogeography and tectonic evolution of the northern margin of East Gondwana[J],2023,256.
APA	Duan, Meng-Long,Xie, Chao-Ming,Wang, Bin,Song, Yu-Hang,Li, Wen-qing,&Hao, Yu-jie.(2023).Provenance of Early Carboniferous clastic sedimentary rocks in the Lhasa Block, Tibet: Insights into the paleogeography and tectonic evolution of the northern margin of East Gondwana.JOURNAL OF ASIAN EARTH SCIENCES,256.
MLA	Duan, Meng-Long,et al."Provenance of Early Carboniferous clastic sedimentary rocks in the Lhasa Block, Tibet: Insights into the paleogeography and tectonic evolution of the northern margin of East Gondwana".JOURNAL OF ASIAN EARTH SCIENCES 256(2023).