Zircon geochemistry of two contrasting types of eclogite: Implications for the tectonic evolution of the North Qaidam UHPM belt, northern Tibet

2016 ◽  
Vol 35 ◽  
pp. 27-39 ◽  
Author(s):  
Guibin Zhang ◽  
Trevor Ireland ◽  
Lifei Zhang ◽  
Zhan Gao ◽  
Shuguang Song
Keyword(s):  
Tectonic Evolution ◽  
Northern Tibet ◽  
The North ◽  
North Qaidam

scholarly journals Devonian to Triassic tectonic evolution and basin transition in the East Kunlun−Qaidam area, northern Tibetan Plateau: Constraints from stratigraphy and detrital zircon U−Pb geochronology

2021 ◽  
Author(s):  
Jiaopeng Sun ◽  
Yunpeng Dong ◽  
Licheng Ma ◽  
Shiyue Chen ◽  
Wan Jiang
Keyword(s):  
High Pressure ◽  
Tectonic Evolution ◽  
Late Triassic ◽  
The South ◽  
Northern Tibet ◽  
The North ◽  
Northern Tibetan Plateau ◽  
East Kunlun ◽  
North Qaidam ◽  
Tethys Ocean

The late Paleozoic to Triassic was an important interval for the East Kunlun−Qaidam area, northern Tibet, as it witnessed prolonged subduction of the South Kunlun Ocean, a major branch of the Paleo-Tethys Ocean whose closure led to the formation of Pangea. However, the geologic history of this stage is poorly constrained due to the paucity of tectonothermal signatures preserved during a magmatic lull. This article presents a set of new provenance data incorporating stratigraphic correlation, sandstone petrology, and zircon U−Pb dating to depict changes in provenance that record multiple stages of topographic and tectonic transition in the East Kunlun−Qaidam area over time in response to the evolution of the South Kunlun Ocean. Devonian intra-arc rifting is recorded by bimodal volcanism and rapid alluvial-lacustrine sedimentation in the North Qaidam Ultra High/High Pressure Belt, whose sources include the Olongbuluke Terrane and southern North Qaidam Ultra High/High Pressure Belt. Southward transgression submerged the East Kunlun−Qaidam area during the Carboniferous prior to the rapid uplift of the Kunlun arc, which changed the provenance during the Early Permian. This shift in provenance for the western Olongbuluke Terrane and thick carbonate deposition throughout the North Qaidam Ultra High/High Pressure Belt in the late Early Carboniferous indicate that the North Qaidam Ultra High/High Pressure Belt should have been inundated, terminating an ∼95 m.y. erosion history. The closure of the South Kunlun Ocean in the late Triassic generated a retroarc foreland along the Zongwulong Tectonic Belt, which is represented by the development of a deep-water, northward-tapering flysch deposystem that was supplied by the widely elevated Kunlun−Qaidam−Olongbuluke Terrane highland. This new scenario allows us to evaluate current models concerning the assembly of northern Tibet and the tectonic evolution of the Paleo-Tethys Ocean.

Multistage anatexis during tectonic evolution from oceanic subduction to continental collision: A review of the North Qaidam UHP Belt, NW China

2019 ◽  
Vol 191 ◽  
pp. 190-211 ◽  
Author(s):  
Shengyao Yu ◽  
Sanzhong Li ◽  
Jianxin Zhang ◽  
Yinbiao Peng ◽  
Ian Somerville ◽  
...  
Keyword(s):  
Tectonic Evolution ◽  
Continental Collision ◽  
Nw China ◽  
The North ◽  
North Qaidam

Climatic and tectonic evolution in the North Qaidam since the Cenozoic: Evidence from sedimentology and mineralogy

2013 ◽  
Vol 24 (3) ◽  
pp. 314-327 ◽  
Author(s):  
Chaowen Wang ◽  
Hanlie Hong ◽  
Zhaohui Li ◽  
Guojun Liang ◽  
Jin Xie ◽  
...  
Keyword(s):  
Tectonic Evolution ◽  
The North ◽  
North Qaidam
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