Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

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Intense Late Cenozoic Crustal Shortening in Southern Qiangtang, Western China


Affiliations
1 Department of Earth Sciences, State Key Laboratory for Mineral Deposit Research, Nanjing University, Nanjing 21 0093, China
2 Nanjing Institute of Geology and Palaeontology, Academia Sinica, Nanjing 210008, China
3 Department of Resources, Petroleum University, Dongying, Shandong 257061, China
 

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The magnitude of Cenozoic crustal shortening within the Tibetan plateau is a question of key importance in the models for its development. Earlier investigators proposed that the Cenozoic shortening within the plateau is generally less than 40%. Here, we present two exactly constrained structural sections, which show that the late Cenozoic crustal shortening within southern Qiangtang is upto 57-67%. This indicates that the internal crustal shortening within the plateau can play a vital role in the doubling of the crust of the Tibetan plateau.
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  • Intense Late Cenozoic Crustal Shortening in Southern Qiangtang, Western China

Abstract Views: 203  |  PDF Views: 147

Authors

K. J. Zhang
Department of Earth Sciences, State Key Laboratory for Mineral Deposit Research, Nanjing University, Nanjing 21 0093, China
Q. F. Wang
Nanjing Institute of Geology and Palaeontology, Academia Sinica, Nanjing 210008, China
H. N. Lu
Nanjing Institute of Geology and Palaeontology, Academia Sinica, Nanjing 210008, China
B. G. Zhang
Nanjing Institute of Geology and Palaeontology, Academia Sinica, Nanjing 210008, China
B. D. Xia
Department of Earth Sciences, State Key Laboratory for Mineral Deposit Research, Nanjing University, Nanjing 21 0093, China
G. M. Wang
Department of Resources, Petroleum University, Dongying, Shandong 257061, China

Abstract


The magnitude of Cenozoic crustal shortening within the Tibetan plateau is a question of key importance in the models for its development. Earlier investigators proposed that the Cenozoic shortening within the plateau is generally less than 40%. Here, we present two exactly constrained structural sections, which show that the late Cenozoic crustal shortening within southern Qiangtang is upto 57-67%. This indicates that the internal crustal shortening within the plateau can play a vital role in the doubling of the crust of the Tibetan plateau.