Tectonic and Rheological Evolution of UHP Metamorphic Rocks in the Dabie-Sulu Region, Eastern China

详细信息   

• 责任者：Suo Shutian (School of Earth Sciences and Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Zhong Zengqiu
• 刊名：Earth Science Frontiers
• 出版年：2008
• 卷期：15(3)
• 关键词：构造分析 ; structural analysis ; 变质岩 ; metamorphic rocks
• 页码：p.150-167
• 图表：8 illus.,72 refs.
• 分类号：0300
• issnNo：ISSN1005-2321
• isbnNo：CN11-3370/P

摘要

///Detailed structural analysis and mapping at a scale of 1∶10 000 at more than 30 key locations in combination with extensive regional field observations of UHP/HP metamorphic rocks in the Dabie-Sulu region, eastern China were carried out in order to reveal their structural geometry, deformation conditions and rheological evolution. Preliminary results show that the wellexposed relict UHP/HP eclogitefacies rocks, outlining a giant UHP/HP metamorphic belt in eastern China, provide a window into Triassic continental subduction/collision-belt processes between the Yangtze craton in the south and the Sino-Korean craton in the north. The observed microstructures and fabrics clearly indicate that the deformation mechanism operating in the rocks, within the UHP/HP metamorphic belt, was dominated by plastic flow during both the UHP/HP eclogite and posteclogitefacies deformation histories.