Advances in Earth Science ›› 2003, Vol. 18 ›› Issue (1): 45-049. doi: 10.11867/j.issn.1001-8166.2003.01.0045

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EXTENSIONAL TECTONICS OF BAIKAL LAKE DISTRICT, RUSSIA: CONTAST WITH EAST CHINA

Yang Weiran 1,2,Sui Zhilong 2,Mats V D 3   

  1. 1. Huazhong Tectonomechanical Research Center , Wuhan 430074,China;2. China University of Geosciences, Wuhan 430074,China; 3. Irktsk Polytechical University, Irkatsk  664074,Russia
  • Received:2002-01-04 Revised:2002-12-31 Online:2003-02-10 Published:2003-02-01

Yang Weiran,Sui Zhilong,Mats V D. EXTENSIONAL TECTONICS OF BAIKAL LAKE DISTRICT, RUSSIA: CONTAST WITH EAST CHINA[J]. Advances in Earth Science, 2003, 18(1): 45-049.

The Baikal rift system was formed due to faulting on the late Cretaceous-Eocene. Epoch planation surface base. The maximum range of the faulting goes beyond 10 km. The development of faults in the Baikal rift system is of obvious regularity. Firstly, The scope of faults is the largest in the central part of the rift system, and decreases gradually towards both ends. Secondly, the correlativity of depth and length of faults is very high(0.73). Thirdly, the faulting took place first in the central part of the rift system, and then extended towards all directions in a quasi-symmetry pattern. The formation of Baikal rift system was the result of both uplift of the mantle and the effect of collsion of India-Eurasia, the former being dominant. Therefore, the rift system is of complicated internal texture and unique evolution. The Baikal rift system in Russia and Cenozic faulted basin and Fen-Wei rift system in East China were synchronously formed, and thus having a closely genetic relationship. Their fomation was restricted and influenced by subduction of the Pacific oceanic plate and collision of India-Eurosia. In addition there is a center of mantle flux in the southwestern part of China. The mantle flux presents a fan-shape flow towards the Pacific oceanic region, and is possibly a field source at deep level of the Baikal rift system and East China.

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