Erosion of Passive Continental Margins: Thermal and Isostatic Implications

被动大陆边缘的侵蚀：热和等静压影响

• 批准号: 8720934
• 负责人: Jeffrey Weissel
• 金额: --
• 依托单位: Columbia University Lamont Doherty Earth Observatory
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-07-15 至 1990-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8720934&HistoricalAwards=false
• 关键词: Erosion; Passive; Continental; Margins; Thermal

The primary geomorphological characteristic of many passive margins is an erosional escarpment which has migrated up to several tens of km inland since formation of the margin. Observed apatite age variation is a thermal response to denudational history, and together with the geomorphology, constrains theoretical models for erosion at passive margins. The PIs will develop models for erosion at passive margins. The overall objective of this research is to understand a) the process of erosion at passive margins, and b) the effect of erosion and its isostatic response in shaping the morpho-tectonic history of passive margins.

许多被动陆缘的主要地貌特征是侵蚀性陡崖，自陆缘形成以来已向内陆迁移了数十公里。观察到的磷灰石年龄变化是一个热响应剥蚀的历史，并与地貌，约束理论模型的侵蚀在被动边缘。研究所将开发被动边缘侵蚀模型。本研究的总体目标是了解a）被动边缘的侵蚀过程，和B）侵蚀的影响及其均衡响应在塑造被动边缘的形态构造历史。