dc.contributor.authorGuilbaud, Christelle
dc.contributor.authorSimoes, Martine
dc.contributor.authorBarrier, Laurie
dc.contributor.authorLaborde, Amandine
dc.contributor.authorVan der Woerd, Jérôme
dc.contributor.authorLi, Haibing
dc.contributor.authorTapponnier, Paul
dc.contributor.authorCoudroy, Thomas
dc.contributor.authorMurray, Andrew
dc.identifier.citationGuilbaud, C., Simoes, M., Barrier, L., Laborde, A., Van der Woerd, J., Li, H., et al. (2017). Kinematics of Active Deformation Across the Western Kunlun Mountain Range (Xinjiang, China) and Potential Seismic Hazards Within the Southern Tarim Basin. Journal of Geophysical Research: Solid Earth, 122(12), 10398-10426.en_US
dc.description.abstractThe Western Kunlun mountain range is a slowly converging intracontinental orogen where deformation rates are too low to be properly quantified from geodetic techniques. This region has recorded little seismicity, but the recent July 2015 (Mw 6.4) Pishan earthquake shows that this mountain range remains seismic. To quantify the rate of active deformation and the potential for major earthquakes in this region, we combine a structural and quantitative morphological analysis of the Yecheng–Pishan fold, along the topographic mountain front in the epicentral area. Using a seismic profile, we derive a structural cross section in which we identify the fault that broke during the Pishan earthquake, an 8–12 km deep blind ramp beneath the Yecheng–Pishan fold. Combining satellite images and DEMs, we achieve a detailed morphological analysis of the Yecheng–Pishan fold, where we find nine levels of incised fluvial terraces and alluvial fans. From their incision pattern and using age constraints retrieved on some of these terraces from field sampling, we quantify the slip rate on the underlying blind ramp to 0.5 to 2.5 mm/yr, with a most probable long-term value of 2 to 2.5 mm/yr. The evolution of the Yecheng–Pishan fold is proposed by combining all structural, morphological, and chronological observations. Finally, we compare the seismotectonic context of the Western Kunlun to what has been proposed for the Himalayas of Central Nepal. This allows for discussing the possibility of M ≥ 8 earthquakes if the whole decollement across the southern Tarim Basin is seismically locked and ruptures in one single event.en_US
dc.format.extent29 p.en_US
dc.relation.ispartofseriesJournal of Geophysical Research: Solid Earthen_US
dc.rights© 2017 American Geophysical Union (AGU). This paper was published in Journal of Geophysical Research: Solid Earth and is made available as an electronic reprint (preprint) with permission of American Geophysical Union (AGU). The published version is available at: [http://dx.doi.org/10.1002/2017JB014069]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.en_US
dc.subjectActive Tectonicsen_US
dc.titleKinematics of Active Deformation Across the Western Kunlun Mountain Range (Xinjiang, China) and Potential Seismic Hazards Within the Southern Tarim Basinen_US
dc.typeJournal Article
dc.contributor.researchEarth Observatory of Singaporeen_US
dc.description.versionPublished versionen_US

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