FAULT ACTIVITY FEATURES OF TONGCHENG FAULT ZONE IN JINHU SAG

ZHANG Xiang-cheng; DAI Jun-sheng; ZOU Juan; WANG Xin-xin; YUE Xi-wei; WU Ya

2014 Vol. 20, No. 4

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Article navigation > Journal of Geomechanics > 2014 > 20(4): 424-433

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ZHANG Xiang-cheng, DAI Jun-sheng, ZOU Juan, WANG Xin-xin, YUE Xi-wei, WU Ya. FAULT ACTIVITY FEATURES OF TONGCHENG FAULT ZONE IN JINHU SAG[J]. Journal of Geomechanics, 2014, 20(4): 424-433.

Citation:

ZHANG Xiang-cheng, DAI Jun-sheng, ZOU Juan, WANG Xin-xin, YUE Xi-wei, WU Ya. FAULT ACTIVITY FEATURES OF TONGCHENG FAULT ZONE IN JINHU SAG[J]. Journal of Geomechanics, 2014, 20(4): 424-433.

FAULT ACTIVITY FEATURES OF TONGCHENG FAULT ZONE IN JINHU SAG

Faculty of Earth Science and Technology, China University of Petroleum, Qingdao 266580, Shandong, China

Received Date: 05 July 2014

Publish Date: 25 December 2017

Abstract

Abstract

According to the interpretation of information of seismology and geology, structural features of Tongcheng fault zone is analyzed; the features and the stages of tectonic evolution are discussed. The research shows that the Tongcheng fault zone mainly develops NE-SW strike faults. Most faults are formed in the Funing period and Sanduo period. Tilt rotation of the blocks is obvious. The structures of fault block and fault nose are developed. Cenozoic tectonic activity shows alternating strong and weak characteristics, and fault activity is complex. The intensity of fault activity in Funing phase is gradually strengthened, and become relatively weak in Dainan period, In the Sanduo phase fault activity enhances, then fault activity largely discontinues. The differential fluctuation in Tongcheng fault is obvious on both sides of strata. Tectonic evolution of Tongcheng fault zone can be divided into four period: fault block development stage (Funing period), differential fluctuation stage (Dainan and Sanduo period), overthrust folded stage (Late Sanduo period), structure stable stage (Neogene and Quaternary). With the superposition of Wubao movement, Sanduo movement and early influence of basement faults, Tongcheng fault zone causes the development of fault nose structure, complex fault block structure and arc fault trap, which provides good places for oil-gas accumulation.
- Jinhu sag /
- tectonic evolution /
- fault activity /
- fault fall /

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References

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