A Discussion on the Generating Mechanism of 1976 Tangshan Earthquake Based on the Geologic Structure of Northern Huabei Basin

• 责任者：Yang Kesheng (Geophysical Research Institute ; Bureau Geophysical Prospecting ; CNPC ; Zhuozhou 072751 ; China) ; Hu Ping
• 刊名：Earth Science Frontiers
• 出版年：2010
• 卷期：17(5)
• 关键词：唐山地震1976 ; Tangshan earthquake 1976 ; 孕震构造 ; seismogenic tectonics ; 华北地台 ; North China Platform
• 页码：p.263-270
• 图表：12 illus., 7 refs.
• 分类号：0500
• issnNo：ISSN1005-2321
• isbnNo：CN11-3370/P

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.