Processes of Crustal Extension in East-Central Idaho

爱达荷州中东部地壳扩张过程

• 批准号: 8721100
• 负责人: Ronald Bruhn
• 金额: $ 8万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-01-15 至 1990-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8721100&HistoricalAwards=false
• 关键词: Processes; Crustal; Extension; East; Central

Continental extension is a major aspect of tectonics and it is important to understand the processes involved and to what extent older structures influence the localization, segmentation and orientations of younger faults. East-central Idaho is an ideal area to study extensional processes because of the long history of extension which dates back to Eocene time and produced a highly segmented and faulted crust. This project will map selected areas and conduct paleomagnetic studies to evaluate the extent to which the crust breaks up into discrete blocks which rotate about vertical axes. The results will be used to better understand the tectonic history of part of the western Cordillera, the mechanics and kinematics of crustal extension and the evolution of seismogenic normal fault zones.

大陆伸展是构造学的一个主要方面， 重要的是要了解所涉及的过程和在多大程度上老 结构影响的定位，分割和方向 年轻的缺点 爱达荷州中东部是一个理想的研究地区 由于长期的伸展历史， 可以追溯到始新世时期， 地壳。 该项目将绘制选定地区的地图并进行古地磁研究 研究评估地壳分裂成 围绕垂直轴旋转的离散块。 结果将 用来更好地了解西部部分地区的构造历史 科迪勒拉山脉，地壳伸展的力学和运动学， 孕震正断层带的演化