地质通报2016，Vol.35Issue(9)：1448-1455,8.
中祁连西段托赖岩群变质岩的原岩恢复及其构造环境
Reconstruction of protoliths of metamorphic rocks of the Tuolai Group and its tec-tonic setting
摘要
Abstract
A study of the nature of the protoliths of metamorphic rocks in the Tuolai Group and their tectonic setting shows that the schist, gneiss, quartzite and marble in metamorphic rocks of the Tuolai Group are originally sedimentary rocks, and the amphibolite in metamorphic rocks of the Tuolai Group is basic volcanic rock. The protolith of schist and gneiss is greywacke, the quartzite is quartz sandstone, the marble is dolostone and limestone, and the amphibolite is basaltic andesite. Discrimination of the tectonic setting of me⁃ta-volcanic rock indicates that the amphibolite formed in an intracontinental rift environment. As the special interlayer of Tuolai Group, the metasedimentary rocks should have the same tectonic environment as the anphibolite, both formed in an extensional basin.关键词
中祁连山/托赖岩群/原岩恢复/构造环境Key words
Mid-Qilian massif/Tuolai Group/protoliths reconstruction/tectonic setting分类
社会科学引用本文复制引用
王龙,宇峰,刘智贤,徐晓飞,贾雨阳..中祁连西段托赖岩群变质岩的原岩恢复及其构造环境[J].地质通报,2016,35(9):1448-1455,8.基金项目
中国地质调查局项目 （）
