Mesozoic Extensional Processes in the Sevier Orogen: Studies in the Funeral Mountains, CA-NV and the Bitterroot Mountains, ID-MT

塞维尔造山带的中生代伸展过程：葬礼山 (CA-NV) 和比特鲁特山 (ID-MT) 的研究

• 批准号: 9218721
• 负责人: Kip Hodges
• 金额: $ 13.59万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-01-01 至 1995-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9218721&HistoricalAwards=false
• 关键词: Mesozoic; Extensional; Processes; Sevier; Orogen

Evidence that large scale extension operates at the same time as overall compression during tectonic convergence has been observed in several orogens. The extension is usually at high structural levels while compression is operating at depth, however the relative extent and displacements are not well understood. This project continues, investigation of possible Mesozoic extension in the Bitterroot Mountains of Idaho and Montana that occurred during the Sevier Orogen. Prior results indicate that extension operated in the Funeral Mountains of California during this tectonic episode. This work will help determine the regional extent and importance of this phenomena for the Sevier Orogen. The results should be applicable to understanding the general significance of extension in compressional orogens.

有证据表明，大规模的扩建工作在 与构造会聚期间的整体压缩同时发生 已经在几个造山带中被观察到。 有效期延长 通常在高结构水平，而压缩是 在深度操作，然而，相对范围和 位移不是很好理解。 这个项目 继续，调查可能的中生代伸展， 发生在爱达荷州和蒙大拿州的比特鲁山 在塞维尔造山带期间 此前的结果表明， 在加州的葬礼山脉运行的扩展 在这一构造时期。 这项工作将有助于确定 这一现象的区域范围和重要性， 塞维尔·奥罗根 结果应适用于 理解外延的一般意义 挤压造山带