气候变化领域集成服务门户(CCPortal): Initial growth of the Northern Lhasaplano, Tibetan Plateau in the early Late Cretaceous (ca. 92 Ma)

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DOI	10.1130/B35124.1
	Initial growth of the Northern Lhasaplano, Tibetan Plateau in the early Late Cretaceous (ca. 92 Ma)
	Lai W.; Hu X.; Garzanti E.; Sun G.; Garzione C.N.; Fadel M.B.; Ma A.
发表日期	2019
ISSN	167606
起始页码	1823
结束页码	1836
卷号	131 期号:2021-11-12
英文摘要	Constraining the growth of the Tibetan Plateau in time and space is critical for testing geodynamic models and climatic changes at the regional and global scale. The Lhasa block is a key region for unraveling the early history of the Tibetan Plateau. Distinct from the underlying shallow-marine limestones, the Jingzhushan and Daxiong formations consist of conglomerate and sandstone deposited in alluvial-fan and braided-river systems. Both units were deposited at ca. 92 Ma, as constrained by interbedded tuff layers, detrital zircons, and micropaleontological data. Provenance and paleocurrent analyses indicate that both units were derived from the same elevated source area located in the central-northern Lhasa block. These two parallel belts of coeval conglomerates record a major change in paleogeography of the source region from a shallow seaway to a continental highland, implying initial topographic growth of an area over 160,000 km2, named here the Northern Lhasaplano. The early Late Cretaceous topographic growth of the Northern Lhasaplano was associated with the demise of Tethyan seaways, thrust-belt development, and crustal thickening. The same paleogeographic and paleotectonic changes were recorded earlier in the Northern Lhasaplano than in the Southern Lhasaplano, indicating progressive topographic growth from north to south across the Bangong- Nujiang suture and Lhasa block during the Cretaceous. Similar to the Central Andean Plateau, the Northern Lhasaplano developed by plate convergence above the oceanic Neo-Tethyan subduction zone before the onset of the India-Asia collision. © 2019 Geological Society of America.
语种	英语
来源期刊	Bulletin of the Geological Society of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/184955
作者单位	State Key Laboratory of Mineral Deposits Research, School of Earth Sciences and Engineering, Nanjing University, Nanjing, 210023, China; Department of Earth and Environmental Sciences, Università di Milano-Bicocca, Milano, 20126, Italy; College of Oceanography, Hohai University, Nanjing, 210098, China; Department of Earth and Environmental Sciences, University of Rochester, Rochester, NY 14627, United States; Department of Geological Sciences, University College London, London, WC1E6BT, United Kingdom
推荐引用方式 GB/T 7714	Lai W.,Hu X.,Garzanti E.,et al. Initial growth of the Northern Lhasaplano, Tibetan Plateau in the early Late Cretaceous (ca. 92 Ma)[J],2019,131(2021-11-12).
APA	Lai W..,Hu X..,Garzanti E..,Sun G..,Garzione C.N..,...&Ma A..(2019).Initial growth of the Northern Lhasaplano, Tibetan Plateau in the early Late Cretaceous (ca. 92 Ma).Bulletin of the Geological Society of America,131(2021-11-12).
MLA	Lai W.,et al."Initial growth of the Northern Lhasaplano, Tibetan Plateau in the early Late Cretaceous (ca. 92 Ma)".Bulletin of the Geological Society of America 131.2021-11-12(2019).