Earth Science Frontiers ›› 2010, Vol. 17 ›› Issue (4): 64-89.

• Article • Previous Articles     Next Articles

Development of the Bohai Bay Basin and destruction of the North China Craton.

LI  San-Zhong, SUO  Yan-Hui, DAI  Li-Meng, LIU  Li-Ping, JIN  Chong, LIU  Xin, HAO  Tian-Yao   

  1. 1Key Lab of Submarine Geosciences and Exploration Techniques,Ministry of Education, Qingdao 266100, China
    2College of Marine Geoscience,Ocean University of China, Qingdao 266100, China
    3Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
    4Dagang Oilfield Company, China National Petroleum Corporation, Tianjin 300280, China
    5First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
  • Received:2009-04-10 Revised:2010-01-14 Online:2010-07-01 Published:2010-07-01

Abstract:

 The Bohai Bay Basin is a Mesozoic and Cenozoic basin located on the eastern block of the North China Craton. It is the central region of the destruction of the North China Craton. The architectures and structures of the Bohai Bay Basin recorded the structural processes of destruction of the craton in the MesoCenozoic. Combined the structures revealed by 3D seismic profiles across the Bohai Bay Basin in recent 10 years with geochemical results and MesoCenozoic structures around the Bohai Bay Basin in recent 20 years, we propose that during the destruction of the North China Craton, the shallow tectonism of the Bohai Bay Basin was the Mesozoic extrusion tectonics and the Cenozoic NWdirected crustal extension. The Cenozoic deepseated tectonism is the regional farfield eastern propagation of the western asthenosphere due to the IndiaEurasia plate collision accompanying with eastern jumping and backrolling of subduction zones of the Pacific Plate. The Mesozoic deepseated tectonisms are the local delamination and magma underplating.

Key words: Bohai Bay Basin, North China Craton, destruction, deep tectonic process, shallow crustal response

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