地质科学2011，Vol.46Issue(1)：146-160,15.
雪峰山早中生代构造演化:构造学和年代学分析木
Tectonic evolution of the Early Mesozoic Xuefengshan belt:Insights from structural analysis and geochronological constraints
摘要
Abstract
In the center of the South China Block,in Hunan Province, the Xuefengshan Belt providesa well-exposed example of intracontinental orogens. Detail field observations indicate that the Xuefengshan Belt can be divided into: ( 1 ) the Western Outer Zone,characterized by km-scale box-fold structure; (2) the Central Xuefengshan Zone, where the dip of the cleavage surface exhibits a fan-like pattern, separated from the Western Outer Zone by the Xuefengshan Main Thrust,the most deformed and metamorphosed region in this belt; (3)and the Eastern Zone,deformed mainly in the brittle-ductile level, characterized by top-to-the-NW structures and also some back-folding structures. The Xuefengshan Belt results of polyphase deformation: D1,characterized by a widespread top-to-the-NW ductile shearing. D2 corresponds to a SE-directed back thrusting and folding event. D3 consists of upright folds with vertical cleavage and lineation. The tectonic evolution of the Early Mesozoic Xuefengshan Belt is possibly originated by the continental subduction in response to the northwest directed subduction of the Pacific plate.关键词
华南板块/雪峰山/早中生代/多期构造变形/陆内造山Key words
South China Block/ Xuefengshan belt/ Early Mesozoic/ Polyphase deformation/ Intracontinental orogeny分类
天文与地球科学引用本文复制引用
褚杨,林伟,Michel Faure,王清晨..雪峰山早中生代构造演化:构造学和年代学分析木[J].地质科学,2011,46(1):146-160,15.基金项目
国家重点基础研究发展计划"973"项目(编号:2005CB422101)和中国科学院知识创新工程重大项目(编号:KZCX1-YW-15-1)资助. （编号:2005CB422101）
