Paleomagnetic and Isotopic Study of Pre-Cenozoic Tectonics of South China

东南亚的构造包括在相当长的时间内不同的克拉通碎片和块体的增生和合并。以华南湖南地块为例，该地块与扬子克拉通相结合，但其附着的时代却很难确定，估计从前寒武纪到中生代。本项目将对湖南地块的古生代和中生代岩石进行古地磁研究，以确定三种组成岩石的优先位置，从而限制碰撞时间。研究结果不仅对华南地质，而且对了解东南亚构造具有重要意义。

The tectonics of Southeast Asia involves accretion and amalgamation of disparate cratonic fragment and blocks over a considerable range of time. The Hunan Block of South China for example accreted to the Yangtze craton, but the age of attachment is poorly constrained and estimates range from Precambrian to Mesozoic. This project will examine Paleozoic and Mesozoic rocks in the Hunan block paleomagnetically to determine prior positions of thee constituent rocks and therefore to constrain the time of collision. Results will be of utility not only in South China geology, but in understanding Southeast Asia tectonics.