Detrital zircon geochronology of pre-Tertiary strata in the Tibetan-Himalayan orogen
George E. Gehrels,Paul Kapp,Peter G. DeCelles,Alex Pullen,R. Blakey,Amy L. Weislogel,Lin Ding,Jerome H. Guynn,Aaron J. Martin,Nadine McQuarrie,An Yin +10 more
TLDR
In this paper, the authors used 13,441 new or existing U-Pb ages of zircon crystals from strata in the Lesser Himalayan, Greater Himalayan and Tethyan sequences in the Himalaya, the Lhasa, Qiangtang, and Nan Shan-Qilian Shan-Altun Shan terranes in Tibet, and platformal strata of the Tarim craton to constrain changes in provenance through time.Abstract:
Detrital zircon data have recently become available from many different portions of the Tibetan-Himalayan orogen. This study uses 13,441 new or existing U-Pb ages of zircon crystals from strata in the Lesser Himalayan, Greater Himalayan, and Tethyan sequences in the Himalaya, the Lhasa, Qiangtang, and Nan Shan-Qilian Shan-Altun Shan terranes in Tibet, and platformal strata of the Tarim craton to constrain changes in provenance through time. These constraints provide information about the paleogeographic and tectonic evolution of the Tibet-Himalaya region during Neoproterozoic to Mesozoic time. First-order conclusions are as follows: (1) Most ages from these crustal fragments are <1.4 Ga, which suggests formation in accretionary orogens involving little pre-mid-Proterozoic cratonal material; (2) all fragments south of the Jinsa suture evolved along the northern margin of India as part of a circum-Gondwana convergent margin system; (3) these Gondwana-margin assemblages were blanketed by glaciogenic sediment during Carboniferous-Permian time; (4) terranes north of the Jinsa suture formed along the southern margin of the Tarim-North China craton; (5) the northern (Tarim-North China) terranes and Gondwana-margin assemblages may have been juxtaposed during mid-Paleozoic time, followed by rifting that formed the Paleo-Tethys and Meso-Tethys ocean basins; (6) the abundance of Permian-Triassic arc-derived detritus in the Lhasa and Qiangtang terranes is interpreted to record their northward migration across the Paleo- and Meso-Tethys ocean basins; and (7) the arrival of India juxtaposed the Tethyan assemblage on its northern margin against the Lhasa terrane, and is the latest in a long history of collisional tectonism. Copyright 2011 by the American Geophysical Union.read more
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The origin and pre-Cenozoic evolution of the Tibetan Plateau
Di-Cheng Zhu,Zhidan Zhao,Yaoling Niu,Yaoling Niu,Yildirim Dilek,Yildirim Dilek,Zengqian Hou,Xuanxue Mo +7 more
TL;DR: This paper reviewed and reevaluated these hypotheses in light of new data from Tibet including the distribution of major tectonic boundaries and suture zones, basement rocks and their sedimentary covers, magmatic suites, and detrital zircon constraints from Paleozoic metasedimentary rocks.
Journal ArticleDOI
Tectonics of the North Qilian orogen, NW China
TL;DR: The Qilian Orogen at the northern margin of the Tibetan Plateau is a type suture zone that recorded a complete history from continental breakup to ocean basin evolution, and to the ultimate continental collision in the time period from the Neoproterozoic to the Paleozoic.
Journal ArticleDOI
Outward-growth of the Tibetan Plateau during the Cenozoic: A review ☆
Chengshan Wang,Jingen Dai,Xixi Zhao,Xixi Zhao,Yalin Li,Stephan A. Graham,Dengfa He,Bo Ran,Jun Meng +8 more
TL;DR: The surface uplift history of the Tibetan Plateau (TP) offers a key testing ground for evaluating models of collisional tectonics and holds important implications for processes ranging from global cooling to the onset of the Asian monsoon as mentioned in this paper.
Journal ArticleDOI
Closure of the Proto-Tethys Ocean and Early Paleozoic amalgamation of microcontinental blocks in East Asia
Sanzhong Li,Shujuan Zhao,Xin Liu,Huahua Cao,Shan Yu,Xiyao Li,Ian D. Somerville,Shengyao Yu,Yanhui Suo +8 more
TL;DR: In this paper, the Proto-Tethys Ocean is defined as a complex complex paleo-ocean located between the Tarim-North China and the Sibumasu/Baoshan blocks, and it was opened from the rifting of the Supercontinent Rodinia and mainly closed at the end of the Early Paleozoic.
Mediterranean-style closure of the Paleo-Tethys ocean
TL;DR: The Qiangtang metamorphic belt (QMB) in central Tibet is one of the largest and most recently documented high pressure to near-ultra-high pressure (near-UHP) belts on Earth.
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