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Intracontinental subduction and Palaeozoic inheritance of the lithosphere suggested by a teleseismic experiment across the Chinese Tien Shan

Poupinet, G. and Avouac, J.-Ph. and Jiang, M. and Wei, S. and Kissling, E. and Herquel, G. and Guilbert, J. and Paul, A. and Wittlinger, G. and Su, H. and Thomas, J.-C. (2002) Intracontinental subduction and Palaeozoic inheritance of the lithosphere suggested by a teleseismic experiment across the Chinese Tien Shan. Terra Nova, 14 (1). pp. 18-24. ISSN 0954-4879. https://resolver.caltech.edu/CaltechAUTHORS:20120910-080944310

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Abstract

Teleseismic tomography across the Chinese Tien Shan shows that seismic wave speeds in the lithosphere beneath central Tien Shan are high and therefore the lithosphere is not weaker than that beneath the adjacent undeformed Tarim and Junggar basins. There is evidence for significant velocity contrasts within the lithosphere that are presumably inherited from the Palaeozoic collision history. The high-velocity, thick Yili block observed underneath the northern Tien Shan is a clue for shortening by a intracontinental subduction. The observed geometry is consistent with a simple model of intracontinental subduction and suggests that, during orogeny, the lithosphere has remained heterogeneous and has deformed along existing planes of weakness rather than by homogeneous thickening of a particularly weak lithosphere.


Item Type:Article
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URLURL TypeDescription
http://dx.doi.org/10.1046/j.1365-3121.2002.00391.xDOIUNSPECIFIED
http://onlinelibrary.wiley.com/doi/10.1046/j.1365-3121.2002.00391.x/abstractPublisherUNSPECIFIED
ORCID:
AuthorORCID
Avouac, J.-Ph.0000-0002-3060-8442
Additional Information:© 2002 Blackwell Science Ltd. Received 8 March 2001; revised version accepted 6 December 2001. Article first published online: 28 Feb 2002. This work is part of the Lithoscope program funded by INSU-CNRS (France), ETH Zurich, CEA-LDG (France) and the Ministry of Land and Resources of China supported this project. We thank the Chinese team that participated in the field work. We thank Peter Molnar for his critical but helpful review.
Group:Seismological Laboratory
Funders:
Funding AgencyGrant Number
Institut national des sciences de l'Univers/Centre National de la Recherche Scientifique (INSU/CNRS) (France)UNSPECIFIED
ETH ZurichUNSPECIFIED
Commissariat à l’Energie Atomique (CEA)/LDG (France)UNSPECIFIED
Ministry of Land and Resources of ChinaUNSPECIFIED
Issue or Number:1
Record Number:CaltechAUTHORS:20120910-080944310
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20120910-080944310
Official Citation:Poupinet, G. , Avouac, J.-Ph. , Jiang, M. , Wei, S. , Kissling, E. , Herquel, G. , Guilbert, J. , Paul, A. , Wittlinger, G. , Su, H. and Thomas, J.-C. (2002), Intracontinental subduction and Palaeozoic inheritance of the lithosphere suggested by a teleseismic experiment across the Chinese Tien Shan. Terra Nova, 14: 18–24. doi: 10.1046/j.1365-3121.2002.00391.x
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:33952
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:10 Sep 2012 15:31
Last Modified:09 Mar 2020 13:18

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