Late Paleozoic faults of the Altai region, Central Asia: tectonic pattern and model of formation |
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| Authors: | M M Buslov T Watanabe Y Fujiwara K Iwata L V Smirnova I Yu Safonova N N Semakov A P Kiryanova |
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| Institution: | a Institute of Geology, SB RAS, Novosibirsk, 630090, Russia;b Hokkaido University, Sapporo 060, Japan |
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| Abstract: | The present kinematic and dynamic analysis of large-scale strike-slip faults, which enabled the formation of a collage of Altai terranes as a result of two collisional events. The Late Devonian–Early Carboniferous collision of the Gondwana-derived Altai-Mongolian terrane and the Siberian continent resulted in the formation of the Charysh–Terekta system of dextral strike-slip faults and later the Kurai and Kuznetsk–Teletsk–Bashkauss sinistral strike-slip faults. The Late Carboniferous–Permian collision of the Siberian and Kazakhstan continents resulted in the formation of the Chara, Irtysh and North-East sinistral strike-slip zones. The age of deformation of both collisional events becomes younger toward the inner areas of the Siberian continent. In the same direction the amount of displacement of strike-slip faulting decreases from several thousand to several hundred kilometers. The width of the Late Paleozoic zone of deformation reaches 1500 km. These events deformed the accretion-collision continental margins and their primary paleogeographic pattern. |
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| Keywords: | Strike-slip fault Collision Altai-Mongolian terrane Kazakhstan continent Siberian continent |
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