Structure and Mechanics of Seismogenic Fault Zones; A Comparative Study of Transtensional Faulting in Yunnan Province, China and Western Cordillera, United States

发震断裂带的结构与机制；

• 批准号: 8707986
• 负责人: Ronald Bruhn
• 金额: $ 7.21万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-09-01 至 1990-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8707986&HistoricalAwards=false
• 关键词: Structure; Mechanics; Seismogenic; Fault; Zones

This project will investigate the structural and earthquake rupture characteristics of transtensional faulting in Yunnan Province, China and will compare and contrast the characteristics of faulting in Yunnan with extensional faulting in the Basin- Range qnd Rocky Mountain Provinces of the United States. The work will be done in conjunction with Chinese collegues from the Geological Institute of the State Seismological Bureau, Beijing, China. The bjectives of this research are (1) to establish a regional kinematic model of tectonics in the Jinchuan--Eryuan extensional zone, (2) construct structural-mechanical models of selected fault zones, (3) interpret these models in terms of seismogenic rupture characteristics, and (4) compare the predicted behavior with that observed in the historical and paleo-seismological record. The work in Yunnan will be integrated wtih similar studies of active fault zones in the Basin-Range and Rocky Moutain regions of the western U.S. in an effort to further understanding of the relations between geologic structure and crustal seismogenics in general.

中国，本项目将研究云南省张拉断裂的构造和地震破裂特征，并将云南的断裂特征与美国盆地山脉和落基山脉省的伸展断裂特征进行比较和对比。这项工作将与北京国家地震局地质研究所的中方同事中国一起完成。本研究的目的是(1)建立金川-洱源伸展带的区域构造运动学模型，(2)建立所选断裂带的构造-力学模型，(3)根据发震破裂特征解释这些模型，(4)将预测的行为与历史和古地震记录中的观测结果进行比较。云南的这项工作将与美国西部盆山活动断裂带和落基山脉活动断裂带的类似研究相结合，以期从总体上进一步了解地质构造和地壳发震之间的关系。