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Comment on "No late Quaternary strike-slip motion along the northern Karakoram fault" published by Robinson et al. in EPSL, 2015

Abstract : The northern part of the already highly debated Karakorum fault (KF) in western Tibet (regarding its initiation age, total geological offset and slip-rate) has been argued by Robinson (2009a) and Robinson et al. (2015) to be inactive. This is based on field investigation and satellite images interpretation showing a few km of Quaternary deposits from the southern Tashkorgan basin in the Chinese Pamir, that appear undisturbed by the main branch of the KF. In particular, Robinson et al. (2015) suggested that the Kongur Shan extensional system (ICES) is not kinematically related to the KF, and that the latter is only a local fault. Here, we use basic definitions of what is an active strike-slip fault system, as well as re-emphasize the importance of the timescale of observation to discuss whether a fault is active, to demonstrate that the KF and the ICES are part of the same fault system. We argue that they together play a significant role in accommodating deformation at the western Himalayan syntaxis, under the form of extensional displacement in the Chinese Pamir. (C) 2016 Elsevier B.V. All rights reserved.
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https://hal-univ-lyon1.archives-ouvertes.fr/hal-02331988
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Submitted on : Thursday, October 24, 2019 - 3:44:26 PM
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Marie-Luce Chevalier, Philippe Hervé Leloup, Haibing Li. Comment on "No late Quaternary strike-slip motion along the northern Karakoram fault" published by Robinson et al. in EPSL, 2015. Earth and Planetary Science Letters, Elsevier, 2016, 443, pp.216-219. ⟨10.1016/j.epsl.2016.03.031⟩. ⟨hal-02331988⟩

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