沉积与特提斯地质2011，Vol.31Issue(3)：78-87,10.
雪峰造山带新元古代构造演化框架
Neoproterozoic tectonic evolution of the Xuefeng orogenic zone in Hunan
摘要
Abstract
The present paper deals, on the basis of abundant lithogeochemical and geochronologic data, with the reconstruction of the Neoproterozoic tectonic evolution in the Xuefeng orogenic zone and its southeastern margin. During 880-820 Ma, the Xuefeng orogenic zone was initiated in the stage of island-arc magmatism, and the Chengbu region on its southeastern margin appeared as a forearc basin. During 820-810 Ma, the Xuefeng orogenic zone experienced the stage of arc-continent collision, and the Chengbu region displays the transition from a forearc basin to an island arc. During 810-800 Ma, the Xuefeng orogenic zone went into the post-collision stage, and a new island arc came into being in the Chengbu region. Till 800-630 Ma, both the Xuefeng orogenic zone and its southeastern margin were developed into the rift basin without exception. The Neoproterozoic tectonic evolution outlined above suggests the island arc accretion on the southeastern margin of the Yangtze landmass, and overlapping of the Xuefengian and Nanhuan deposits upon the Huanan residual oceanic basin.关键词
雪峰造山带/构造演化/新元古代/湖南Key words
Xuefeng orogenic zone/ tectonic evolution/ Neoproterozoic/ Hunan分类
天文与地球科学引用本文复制引用
柏道远,贾宝华,钟响,贾朋远,刘耀荣,马铁球..雪峰造山带新元古代构造演化框架[J].沉积与特提斯地质,2011,31(3):78-87,10.基金项目
中国地质调查局"湖南1∶25万武冈市和永州市幅区调修测"项目、"中国地质构造区划综合研究与区域地质志修编"项目(1212010811032)联合资助 （1212010811032）
