Oil & Gas Geology ›› 2006, Vol. 27 ›› Issue (2): 173-179.doi: 10.11743/ogg20060206

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Structural division and characteristics in western edge of Ordos basin

Zhao Hongge, Liu Chiyang, Wang Feng, Wang Jianqiang   

  1. State Key Laboratory of Continental Dynamics, Northwest University, Xi'an, Shaanxi 710069
  • Received:2005-12-01 Online:2006-04-25 Published:2012-01-16

Abstract:

The geologic structures in the western edge of Ordos basin are complicated due to the long active movements of Qinling-Qilian tectonic belt and Alashan massif. Based on comprehensive analysis of gravity,aeromagnetic,remote sensing,seismic and other data,the middle sector of the western edge of Ordos basin can be divided into the northern,middle and southern zones,according to the distinct characteristics of latitudinal structural zones.The northern structural zone can be further divided into Zhuozishan and Hengshanpu segments,the middle zone can be further divided into transform zone and Majiatan segment,while the southern zone can be further divided into Shazijing north,Guyuan and Huating south segments,with each segment having remarkably different structural features.Most of the gas reserves have been discovered in the thrust blocks and anticlines in the Hengshanpu segment,while most oil are commonly distributed in Majiatan segment and in the adjacent thrust nappe structures.

Key words: latitudinal structural zone, structural feature, structural division, western edge of Ordos basin

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