地质与资源2017，Vol.26Issue(3)：229-233,5.
滇西北云岭陆缘弧大地构造单元的划分与特征
DIVISION AND CHARACTERISTICS OF THE GEOTECTONIC UNITS OF YUNLING EPICONTINENTAL ARC IN NORTHWEST YUNNAN
摘要
Abstract
With field survey and data processing,the structural characteristics of the Yunling epicontinental arc in Northwest Yunnan are clarified.This region is divided into 6 four-grade tectonic units,i.e.Xuelongshan Rock Group (Pt1Xl),Deqing Blocks (Pz1),Pantiange acidic volcanic magmatic arc (T2),Gongnong inter-arc basin (T2),Cuiyibi intermediate-basic volcanic magmatic arc (T1-2),and Ludian volcanic arc-syn-collisional granite (T).The former two units belong to the basements of island arcs;while latter four,the main bodies.The rock associations and deformationmetamorphism of each unit are various obviously.The main bodies of island arcs were formed from Early Triassic to early Late Triassic,as a product of the westward subduction and collisional orogeny of Jinshajiang ocean basin.The main bodies of island arcs are covered by Upper Triassic strata in angular unconformity.关键词
云岭陆缘弧/大地构造单元/地质特征/滇西北Key words
Yunling epicontinental arc/geotectonic unit/geological characteristics/Northwest Yunnan分类
天文与地球科学引用本文复制引用
王学武,刘凤祥,李新仁,严城民,周喜林,王长兵..滇西北云岭陆缘弧大地构造单元的划分与特征[J].地质与资源,2017,26(3):229-233,5.基金项目
中央地质勘查基金项目“云南省维西县海尼地区铀矿普查”(2013531002). （2013531002）
