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The Ancestral Lhasa River: A Late Cretaceous trans-arc river that drained the proto-Tibetan Plateau
Laskowski, AK (Laskowski, Andrew K.)1; Orme, DA (Orme, Devon A.)1; Cai, FL (Cai, Fulong)2; Ding, L (Ding, Lin)2
Source PublicationGEOLOGY
2019
Volume47Issue:11Pages:1029-1033
DOI10.1130/G46823.1
Abstract

Late Cretaceous trench basin strata were deposited in the subduction zone that consumed Neo-Tethyan oceanic lithosphere along the southern margin of the proto-Tibetan Plateau. We conducted detrital zircon (DZ) U-Pb geochronology on six trench basin samples (n = 1716) collected near Denggar, Tibet (similar to 500 km west of Lhasa), to assess the provenance of these rocks and reconstruct Late Cretaceous sediment transport pathways. They contained DZ ages that point to a unique source around Lhasa city, north of the Late Cretaceous Gangdese magmatic arc. The modern Lhasa River catchment contains the requisite sources, and its main trunk transects the Gangdese magmatic arc, joining with the Yarlung River at a barbed junction at the India-Asia suture. We infer that the Lhasa River is an ancient feature that transported sediment to the subduction zone in Late Cretaceous time and persisted during India-Asia collision.

Subject AreaGeology
WOS IDWOS:000491287900005
Language英语
Indexed BySCI
KeywordXigaze Fore-arc Tsangpo Suture Zone U-pb Geochronology Southern Tibet Detrital Zircon Oceanic Subduction Evolution Provenance Accretion Terrane
WOS Research AreaGeology
WOS SubjectGeology
Cooperation Status国际
ISSN0091-7613
Department大陆碰撞与高原隆升重点实验室
URL查看原文
PublisherGEOLOGICAL SOC AMER, INC
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9108
Collection图书馆
Corresponding AuthorLaskowski, AK (Laskowski, Andrew K.)
Affiliation1.Montana State Univ, Dept Earth Sci, Bozeman, MT 59717 USA;
2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100101, Peoples R China.
Recommended Citation
GB/T 7714
Laskowski, AK ,Orme, DA ,Cai, FL ,et al. The Ancestral Lhasa River: A Late Cretaceous trans-arc river that drained the proto-Tibetan Plateau[J]. GEOLOGY,2019,47(11):1029-1033.
APA Laskowski, AK ,Orme, DA ,Cai, FL ,&Ding, L .(2019).The Ancestral Lhasa River: A Late Cretaceous trans-arc river that drained the proto-Tibetan Plateau.GEOLOGY,47(11),1029-1033.
MLA Laskowski, AK ,et al."The Ancestral Lhasa River: A Late Cretaceous trans-arc river that drained the proto-Tibetan Plateau".GEOLOGY 47.11(2019):1029-1033.
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