The Characteristics of Soft- sediment Deformation Structures within the Lower Palaeozoic of Southwest Bohai Sea and Its Geological Implications
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    Abstract:

    Objectives: Soft- sediment deformation structures have been identified in Gushan Group of Cambrian of lower Palaeozoic in Bohai Sea area for the first time. Methods: Based on the detailed observation and description of drilling cores, typical sedimentary structures including liquefied diapir structure, liquefied carbonate volcano, liquefied micritevein, liquefied breccias and step microfaults have been observed. Results: There are liquefied diapir structure——liquefied micritevein belt, liquefied breccias zone and step microfaults belt from bottom to top in vertical profile of the both stages according to the brittle and plastic deformation characteristics. Conclusions: The seismites of this formation may be account for the activities of ancient Tanlu fault zone in Cambrian, and is also the response of the splitting of the SinoKorean plate which cracked into North China plate and Jiaoliao plate.

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YE Tao, WEI Ajuan, GAO Kunshun, SUN Zhe, GUO Ying, LI Fei.2018. The Characteristics of Soft- sediment Deformation Structures within the Lower Palaeozoic of Southwest Bohai Sea and Its Geological Implications[J]. Geological Review,64(6):1530-1540.

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History
  • Received:October 11,2017
  • Revised:September 11,2018
  • Adopted:
  • Online: November 15,2018
  • Published: