Far‐field lithospheric deformation in Tibet during continental collision
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- Katherine E. Dayem
- Department of Geological Sciences and CIRES University of Colorado Boulder Colorado USA
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- Peter Molnar
- Department of Geological Sciences and CIRES University of Colorado Boulder Colorado USA
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- Marin K. Clark
- Department of Geological Sciences University of Michigan Ann Arbor Michigan USA
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- Gregory A. Houseman
- School of Earth and Environment University of Leeds Leeds UK
書誌事項
- 公開日
- 2009-12
- 権利情報
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- http://onlinelibrary.wiley.com/termsAndConditions#vor
- DOI
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- 10.1029/2008tc002344
- 公開者
- American Geophysical Union (AGU)
この論文をさがす
説明
<jats:p>Crustal deformation along the present‐day northern margin of the Tibetan Plateau has occurred since mid to late Eocene time, soon after India collided with Eurasia. Assuming that on these distance and time scales the lithosphere can be approximated using a thin viscous sheet, we show that far‐field lithospheric deformation caused by an indenting boundary is expected to start shortly after collision begins. When a strong region analogous to cratonic lithosphere like that of the Tarim Basin is included in the calculations, shear and vertical strain rates concentrate along the southern edge of the strong region, resulting in enhanced deformation there. In calculations scaled to the dimensions of India and the Tibetan Plateau, shear and vertical strain rates on the northern edge of the plateau increase soon after collision begins. Crustal thickening accelerates later in the calculations. We propose that the apparent increased exhumation (and perhaps surface uplift) around 10 Ma may signal the arrival of the thickening front.</jats:p>
収録刊行物
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- Tectonics
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Tectonics 28 (6), 2009-12
American Geophysical Union (AGU)
