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

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:
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
项目状态:
已结题
起止时间:
2001-05-01 至 2004-10-31

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中文摘要
翻译
[01:06 . 80]大河流是造山带地球动力学演化的一个重要因素,因为它们确定了排水和大量物质移动的基准面。然而,在与地壳构造相一致的空间尺度上,破译主要河流的切割历史是困难的,因为它们促进的侵蚀消除了大多数直接证据。磷灰石的氦定年具有提供造山带河流切割时间信息的潜力。该项目将研究印度河的切口历史,因为它穿过巴基斯坦的南迦帕尔巴特变质地块。研究结果将有助于检验喜马拉雅地区的构造和地形理论。
英文摘要
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.
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