气候变化领域集成服务门户(CCPortal): Detrital zircon provenance comparison between the Paleocene-Eocene Nangqian-Xialaxiu and Gongjue basins: New insights for Cenozoic paleogeographic evolution of the eastern Tibetan Plateau

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DOI	10.1016/j.palaeo.2019.109241
	Detrital zircon provenance comparison between the Paleocene-Eocene Nangqian-Xialaxiu and Gongjue basins: New insights for Cenozoic paleogeographic evolution of the eastern Tibetan Plateau
	Zhang Y.; Huang W.; Zhang Y.; Poujol M.; Guillot S.; Roperch P.; Dupont-Nivet G.; Guo Z.
发表日期	2019
ISSN	0031-0182
卷号	533
英文摘要	Paleogeographic reconstructions of terranes can greatly benefit from the provenance analysis of sediments. A series of Cenozoic basins provide key sedimentary archives for investigating the growth of the Tibetan Plateau, yet the provenance of the sediments in these basins has never been constrained robustly. Here we report sedimentary petrological and detrital zircon geochronological data from the Paleocene-Eocene Nangqian-Xialaxiu and Gongjue basins. Sandstone detrital modes and zircon morphology suggest that the samples collected in these two basins were sourced from recycled orogen. Detrital zircon geochronology indicates that sediments in the Nangqian-Xialaxiu Basin are characterized by two distinct age populations at 220–280 Ma and 405–445 Ma. In contrast, three predominant age populations of 207–256 Ma, 423–445 Ma, and 1851–1868 Ma, and two subordinate age populations of ~50 Ma and ~2500 Ma, are recognized in the Gongjue Basin. Comparison with detrital zircon ages from the surrounding terranes suggests that sediments in the Nangqian-Xialaxiu Basin come from the neighboring thrust belts, whereas sediments from the Gongjue Basin are predominantly derived from the distant Songpan-Ganzi Terrane with minor contribution from the surrounding areas. A three-stage Cenozoic evolution of the eastern Tibetan Plateau is proposed. During the Paleocene, the Nangqian-Xialaxiu Basin appeared as a set of small intermontane sub-basins and received plentiful sediments from the neighboring mountain belts; during the Eocene, the Gongjue Basin kept a relatively low altitude and was a depression at the edge of a proto-Plateau; since the Oligocene, the Tibetan Plateau further uplifted and the marginal Gongjue Basin was involved in the Tibetan interior orogeny, indicating the eastward propagation of the Tibetan Plateau. © 2019 Elsevier B.V.
英文关键词	Cenozoic basins; Eastern Tibetan Plateau; Sandstone detrital modes; Tectonic reconstruction; U-Pb geochronology
语种	英语
scopus关键词	Cenozoic; fold and thrust belt; geochronology; Oligocene; paleoceanography; Paleocene-Eocene boundary; paleogeography; provenance; sandstone; China; Nangqian; Qinghai; Qinghai-Xizang Plateau; Songpan-Ganzi Basin
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150830
作者单位	Key Laboratory of Orogenic Belts and Crustal Evolution, Ministry of Education, School of Earth and Space Sciences, Peking University, Beijing, 100871, China; Department of Earth and Environmental Sciences, University of Rochester, Rochester, NY 14627, United States; Univ. Rennes, CNRS, Géosciences Rennes-UMR 6118, Rennes, F-35000, France; University of Grenoble Alpes, CNRS, IRD, IFSTTAR, ISTerre, Grenoble, 38000, France; Institute of Earth and Environmental Sciences, University of Potsdam, Potsdam, Golm 14476, Germany
推荐引用方式 GB/T 7714	Zhang Y.,Huang W.,Zhang Y.,et al. Detrital zircon provenance comparison between the Paleocene-Eocene Nangqian-Xialaxiu and Gongjue basins: New insights for Cenozoic paleogeographic evolution of the eastern Tibetan Plateau[J],2019,533.
APA	Zhang Y..,Huang W..,Zhang Y..,Poujol M..,Guillot S..,...&Guo Z..(2019).Detrital zircon provenance comparison between the Paleocene-Eocene Nangqian-Xialaxiu and Gongjue basins: New insights for Cenozoic paleogeographic evolution of the eastern Tibetan Plateau.Palaeogeography, Palaeoclimatology, Palaeoecology,533.
MLA	Zhang Y.,et al."Detrital zircon provenance comparison between the Paleocene-Eocene Nangqian-Xialaxiu and Gongjue basins: New insights for Cenozoic paleogeographic evolution of the eastern Tibetan Plateau".Palaeogeography, Palaeoclimatology, Palaeoecology 533(2019).