Determining the Uplift Rate of the Tibetan Plateau from Cosmogenic 36C1 in Volcanic Rocks
Determining the Uplift Rate of the Tibetan Plateau from Cosmogenic 36C1 in Volcanic Rocks
批准号:
9223802
负责人:
Fred Phillips
金额:
$12.86万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1993
资助国家:
美国
项目状态:
已结题
起止时间:
1993-07-01 至 1996-06-30
中文摘要
在一些碰撞造山带中,大面积的隆升伴随着构造运动,形成了海拔异常高的大型高原。现代最经典的例子是青藏高原的5000度,这是地球表面最不寻常的不规则现象之一。最近的建模强调了了解这些高原的隆升历史的重要性,这不仅有助于理解所涉及的基本构造力学,也有助于理解这些隆升如何影响大气环流模式、侵蚀和其他衍生参数。该项目将利用地表36C1的海拔控制生产和火山流的辐射测年来约束青藏高原的隆升历史。结果,如果成功的话,将对了解这个高原的形成和测试一般的造山模型都是无价的。
英文摘要
In several collisional orogens, uplift of large areas has accompanied tectonism, forming large plateaus of anomalously high elevation. The classic modern example is the 5,000 in Tibetan Plateau, one of the most extraordinary irregularities of the earth's surface. Recent modeling has underscored the importance of understanding the uplift history of these plateaus both in understanding the fundamental tectonic mechanics involved and in understanding how these uplifts affect atmospheric circulation patterns, erosion and other derivative parameters. This project will employ the altitude-controlled production of 36C1 of surfaces and radiometric dating of volcanic flows to constrain the uplift history of the Tibetan Plateau. Results, if successful, will be invaluable in both understanding the formation of this plateau and in testing general orogenic models.
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Chlorine-36 Dating of Saline Sediments, Searles Lake, California
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海外基金