Paleomagnetism and Tectonics of Central Asia

中亚古地磁和构造

• 批准号: 8817774
• 负责人: Michael McWilliams
• 金额: $ 7.5万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-07-01 至 1991-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8817774&HistoricalAwards=false
• 关键词: Paleomagnetism; Tectonics; Central; Asia

Between the Indian plate and Asia are several large blocks or terranes that may have been accreted against Siberia during latest Paleozoic or Mesozoic time. One of the larger of these, the Tarim block of western China, has been the focus of a paleo- magnetic project to determine past positions relative to Asia by development of an apparent polar wander curve (APW). This project will expand this analysis to several blocks adjacent to the Tarim block in order to determine the degree of allochtoniety and degree of similarity of their APWs to Tarim. Results should help refine the Paleozoic and Mesozoic accretion history of western China.

在印度板块和亚洲之间有几个大型板块或地体，它们可能是在古生代晚期或中生代时期与西伯利亚相对抗而形成的。其中较大的一个是中国西部的塔里木地块，它一直是一个古磁项目的焦点，该项目通过发展一个明显的极移曲线（APW）来确定过去相对于亚洲的位置。本项目将把这一分析扩展到塔里木区块附近的几个区块，以确定其apw与塔里木的异位度和相似度。研究结果有助于完善中国西部古生代和中生代的增生史。