摘要
文中总结了雅鲁藏布大峡谷科学探险考察中获得的岩石学和构造地质学认识与区域上已经取得的多学科成果，论述了雅鲁藏布大峡谷得以形成的根本原因是该地区深部存在着地幔上涌体，雅鲁藏布大峡谷和大拐弯的形成是地幔上涌体作用于岩石圈和地表的效应。地幔上涌体的确认揭开了该地区所特有的生物学、气候特征等方面的奥秘，雅鲁藏布大峡谷及其周缘地区是大陆动力学研究、壳 幔动力学、地球系统中各圈层间耦合作用及大陆块体运动学研究最理想的野外实验室。
The paper summarizes that the formation of the Yarlung Zangbo Canyon and the Yarlung Zangbo River big“turning” is due to the upwelling mantle according to the petrology and structural deformation around that area. Ultramafic alkaline complexes discovered first in the area, which is an important evidence for the existence of the upwelling mantle, which includes lamproite or kimberlite and is considered to be originated from the asthenosphere mantle. The effect of the upwelling mantle is also reflected by the biological and climate phenomena. It is concluded that the Yarlung Zangbo Canyon is the optimum field laboratory for the study of continental dynamics and kinematics, earth system involving crust mantle exchange, lithosphere or asthenosphere effect on the atmosphere, hydrosphere and biosphere on a large scale.
出处
《地学前缘》
EI
CAS
CSCD
1999年第4期231-235,共5页
Earth Science Frontiers
基金
国家自然科学基金
中国科学院重点项目
关键词
地幔上涌体
大陆动力学
雅鲁藏布峡谷
地质成因
the upwelling mantle, ultramafic alkaline complexes, continental dynamics, earth system, Yarlung Zangbo Canyon
