中国地质2011，Vol.38Issue(1)：1-19,19.
华南岩石圈三维结构
3D Lithospheric structure of South China
摘要
Abstract
Starting with 6 P wave tomography profiles across the South China block, the authors approached 3D structure of the South China lithosphere. The South China block can be divided into three parts bounded by Qin-Hang fault zone and Chuan-Xiang-Gui rift. To the southeast of Qin-Hang fault zone there is Cathaysia lithosphere which is a part of the SE Asia-West Pacific low velocity lithosphere, formed by intrusive uplifting of ashenospheric materials. To the west of Chuan-Xiang-Gui rift is the Upper Yangtze lithosphere, which is hot near the surface but has a high velocity root at depth. On the west part of upper Yangtze block, Paleozoic mantle plume in the Panxi area formed a magma chamber at the crust-mantle transformed zone, resulting in basalt eruption in vast areas. Between the Chuan-Xiang-Gui rift and the Qin-Hang fault zone is mid-Yangtze lithosphere, which is cold and whose resistivity is low. The thickness calculated by heat flow and magnetotelluric sounding reached 300 km.关键词
华南岩石圈/扬子岩石圈/华夏岩石圈/川湘黔裂陷槽分类
天文与地球科学引用本文复制引用
袁学诚,华九如..华南岩石圈三维结构[J].中国地质,2011,38(1):1-19,19.基金项目
中国地质调查局"中国地质构造区划综合研究与区域地质调查综合集成"项目资助. （）
