A discussion on the generating mechanism of 1976 Tangshan earthquake  based on the geologic structure of northern Huabei Basin.

Earth Science Frontiers ›› 2010, Vol. 17 ›› Issue (5): 263-270.

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A discussion on the generating mechanism of 1976 Tangshan earthquake based on the geologic structure of northern Huabei Basin.

1Geophysical Research Institute of Bureau Geophysical Prospecting, CNPC(China National Petroleum Corp.), Zhuozhou 072751, China
2Beijing Seismic Bureau, Beijing 100080, China
3Bureau Geophysical Prospecting Research ＆ Development Center, Zhuozhou 072751, China

Received:2010-03-23 Revised:2010-04-25 Online:2010-09-15 Published:2010-10-22

Abstract

Abstract:

In the northern Huabei Basin, the Yanliao epsilonshaped structure is composed of the HuairouSanheTangshanJinzhouXialiaohe arcuate structure belt and the NStrending TangshanFengnan uplift that were formed by the Palaeogene extension and Neogene compression. The backbone of TangshanFengnan uplift pushed southward and made the compressive stress concentrate at the apex of the arcuate structure belt. The stress would be released when it exceeded the limiting value, and caused the earthquake. It is the generating mechanism of 1976 Tangshan earthquake proposed in this paper.

Key words: northern Huabei Basin, Yanliao epsilonshaped structure, TangshanFengnan backbone, 1976 Tangshan earthquake

CLC Number:

P315.2

YANG Ke-Min, HU Beng, DANG Xiao-Chun. A discussion on the generating mechanism of 1976 Tangshan earthquake based on the geologic structure of northern Huabei Basin.[J]. Earth Science Frontiers, 2010, 17(5): 263-270.

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A discussion on the generating mechanism of 1976 Tangshan earthquake based on the geologic structure of northern Huabei Basin.

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