【摘要】 本文根据多年野外考察资料,在论述1927年古浪大震形变带及发震断裂带特征基础上,分析了地震发生的地质构造背景,认为这次大震是塔儿庄—皇城断裂带和武威—天祝断裂带同时活动的产物,同时对两组断裂破裂方式进行了初步分析,提出了断块错动力学模型。更多还原

【Abstract】 In this paper, based on the data of virtual investigation, the author has discussed the characteristics of deformation band and earthquake fracture of Gulang earthquke in1927 and analysed the ge0tectonical background of this earthquake. The author believes that the occurrence of Gulang earthquake in1927 Was the result that the fracture band of Tazhuang-Huangcheng andthat of Wuwei- Tianzhu were in activity at the sametime. And based no the analysis of their rupturing way, the mechanics model of fragmentation massif movement has been made.更多还原