Incision History of the Middle Indus River from (U-Th)/He Dating of Apatite

从磷灰石 (U-Th)/He 定年来看印度河中游的切割历史

• 批准号: 0106806
• 负责人: Peter Zeitler
• 金额: $ 4.82万
• 依托单位: Lehigh University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-05-01 至 2004-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0106806&HistoricalAwards=false
• 关键词: Incision; History; Middle; Indus; River; Incision; History; Middle; Indus; River

0106806ZeitlerLarge rivers are an important element in the geodynamic - evolution of orogens, as they define base level for drainage and removal of considerable material. However, at spatial scales consistent with crustal tectonics, it is difficult to decipher the incision histories of major rivers because the erosion they facilitate removes most of the direct evidence. Helium dating of apatite has the potential to provide timing information of river incision in orogenic areas. This project will examine the Indus River incision history as it crosses the Nanga Parbat metamorphic massif in Pakistan. Results will be useful in testing theories of tectonics and topography of the Himalaya.

0106806zeitlerlarge河流是牛根的地球动力学演变中的重要元素，因为它们定义了用于排水和去除相当大物质的基础水平。 但是，在与地壳构造一致的空间尺度上，很难破译主要河流的切口历史，因为它们促进的侵蚀会消除大多数直接证据。 磷灰石的氦日期有可能提供造山学区域河流切口的定时信息。 该项目将检查印度河切口的历史，因为它穿越了巴基斯坦的Nanga Parbat变质地块。 结果将在测试喜马拉雅山的构造理论和地形理论方面很有用。