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Geoscience ›› 2010, Vol. 24 ›› Issue (6): 1035-1041.

• Water Resource and Environment • Previous Articles     Next Articles

Structural Features and Evolution of Yelu Fault Belt in Zhoukou Depression, Southern North China

 BAI  Hua1, YANG  Meng-Hui1,2 , CENG  Peng1, WANG  Jin-Xiu1, HUANG  Wang-Guo3   

  1. 1.College of Geosciences, China University of Petroleum, Beijing102249, China;
    2.State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing102249, China;
    3.The First Branch Mud Logging Company, CNPC Bohai Drilling Engineering Co.Ltd, Tianjin300457, China
  • Online:2010-11-19 Published:2010-12-30

Abstract:

Located in the southern North China Craton, Yelu fault belt is an important part of Lushan-Wuyang-Fuyang-Huainan fault belt, which controls the formation and evolution of Tanzhuang Sag and Wuyang Sag in Zhoukou depression. It was affirmed through drilling analysis, seismic profile interpretation and balanced cross section analysis that under the influence of Qinling-Dabie orogenic activity, Yelu fault belt strongly thrusted towards NNE, with about 37° fault dip and fault activity rate of -22 m/Ma during the Late Jurassic and Early Cretaceous; occurred in the Late Cretaceous and Paleogene, the negative inversion of Yelu fault belt was related to the extensional environment in Zhoukou depression. The tri-shear model is applied to stimulating the structural and evolutionary processes of Yelu fault belt nearby the well ZC 12. The result shows that during the Late Jurassic and Early Cretaceous, fault slip of Yelu fault belt amounts to 6,100 m, and fault propagation is 9,150 m as well as p/s is 1.5, with the trishear angel of 150°.

Key words: Zhoukou depression, Yelu fault belt, structural feature, structural evolution, trishear model

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