Science in China Series D: Earth Sciences

, Volume 45, Issue 4, pp 311–324 | Cite as

Study on dynamics of tectonic evolution in the Fushun Basin, Northeast China

  • Chonglong Wu
  • Xinqing Wang
  • Gang Liu
  • Shaohu Li
  • Xiaoping Mao
  • Xing Li


The updated study shows that the taphrogenesis of basement of the Fushun Basin is not a kind of instantaneous process. It intensified gradually and went to extreme in the sedimentary stage of the Guchengzi formation, and then, it weakened rapidly and stopped soon afterwards; the depression did not take place after the taphrogenesis. On the contrary, it almost happened simultaneously with the taphrogenesis. The depression went at a high speed from the beginning of the sedimentary period of the Xilutian formation, and then weakened gradually in the sedimentary period of the Gengjiajie formation. The evolution course of the synsedimentary structure of the Fushun Basin can be summarized as the following six stages: slow taphrogenesis and high speed depression to accelerated taphrogenesis and high speed depression to high speed taphrogenesis and high speed depression to retarded taphrogenesis and high speed depression to gradual halt of taphrogenesis and reduced depression to slow depression and gradual halt of depression. The tectonic evolution resulted in the formation of the “lower taphrogenesis and upper depression” structure. The formation of the binary structure might be due to the suspension of taphrogenesis and the change of the regional structure stress field, but the depression kept going. The result of calculation combining the analysis of the synsedimentary structural frame, the back-stripping method of the subsidence history of the basin basement and the simulation of thermo-settlement history indicates that the great sedimentary space required by the “upper depression part” consists of two parts, namely, 40% from compaction of sediments and 60% from slow depression of the basin basement during a long period of time. Gradual halt of the depression in the Fushun Basin may be attributed to the reversal of the lithosphere hot-recession and gravity isostasy adjustment which may be the result of new hot-events in the depths and accompanied invasion of extremely thick diabase sill, thus revealing a new forming mechanism of “fault subsidence at the base and depression on the top” structure.


basin dynamics synsedimentary structural evolution taphrogenesis depression tectonic framework of basin Fushun Basin 


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Copyright information

© Science in China Press 2002

Authors and Affiliations

  • Chonglong Wu
    • 1
  • Xinqing Wang
    • 1
  • Gang Liu
    • 1
  • Shaohu Li
    • 1
  • Xiaoping Mao
    • 1
  • Xing Li
    • 1
  1. 1.China University of GeosciencesWuhanChina

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