用面积平衡原理预测伸展断陷盆地中岩层内部应变及亚分辨正断层的方法

漆家福; GroshongR H Jr; 杨桥

Volume 27 Issue 6

Jun. 2002

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QI Jia-fu, Groshong R H Jr, YANG Qiao, 2002. Analysis Method for Predicting Strain of Interior Beds and Sub-Resolution Faults from Area-Balance Theory in Extensional Basin. Earth Science, 27(6): 696-702.

Citation:

QI Jia-fu, Groshong R H Jr, YANG Qiao, 2002. Analysis Method for Predicting Strain of Interior Beds and Sub-Resolution Faults from Area-Balance Theory in Extensional Basin. Earth Science, 27(6): 696-702.

Citation:

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Analysis Method for Predicting Strain of Interior Beds and Sub-Resolution Faults from Area-Balance Theory in Extensional Basin

1.
KeyLaboratory for Hydrocarbon Accumulation, Ministry of Education, Beijing 102249, China
2.
Department of Geological Sciences, the University of Alabama, USA

Received Date: 2002-08-12
Publish Date: 2002-11-25

Abstract

Abstract

Extensional basin includes mainly graben and half-graben controlled by low detachment. Based on the area-balance theory, there is a linear equation between a height of regional to detachment (h) on the outside of the basin and lose area (S) of the regional in extensional basin. The basement beds above detachment are of same extensional displacement so that "S-h diagram" can be used to determine the depth to detachment and to calculate the total extensional displacement of the beds above detachment. The extensional displacement is dominated by the heave of various scale normal faults. The displacement of obvious faults can be immediately figured out by measured bed-length. The requisite displacement calculated by area balance is the layer-parallel strain, which could be the extensional displacement of sub-resolution faults. Accordingly, the layer-parallel strain can help us to predict the magnitude and distribution of sub-resolution fault on the base of analysis of structural style and rheological behaviour.
- area-balance,
- extensional strain,
- sub-resolution fault,
- graben,
- half-graben,
- S-h diagram

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References(9)

References

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