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Late Cenozoic right-lateral strike-slip faulting in southern Tibet by Rolando Armijo; Paul Tapponnier; Tonglin Han is a Earth and Planetary Sciences article available to read on EtoBox.

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Field observations collected during the Sino-French Himalaya-Tibet cooperation project (1980-1982) show that fight-lateral faulting between southern and northern Tibet, roughly along the "chord" joining the eastem and westem syntaxes of the Himalayan arc, is a major component of the active tectonics north of the Himalayas. Just noah of the well developed rifts of southern Tibet, we studied three fight-lateral, 100-200 km long, strike-slip faults forming an en 6chelon array along that chord. Evidence for earthquake surface breaks was found on each of these faults. For the M = 8, Beng Co (or Damxung) strike-slip earthquake of November 18, 1951, rapture parameters could be constrained to be a = 8 + 2 m and L = 90 km. Offset glacial and postglacial morphological markers (105 years and 104 years B.P.) imply displacement rates of the order of 1-2 cm/yr on the three faults. The en 6chelon fault zone appears to extend westward --2000 km across the plateau to the Karakorum fault and is thus referred to as the Karakorum-Jiali fault zone (KJFZ). Fast rates of slip on it and on faults along the northern rim of Tibet appear to contrast with the slower rates of deformations in the interior of th

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Author

Rolando Armijo; Paul Tapponnier; Tonglin Han

Published

1989

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)