宁强—中子铺地区构造特征及演化

Structural characteristics and evolution of ningqiang-zhongnupu area

该地区构造历经秦岭造山带扬子陆块、松潘-甘孜造山带三者长期相互作用经历了前南华纪、南华纪-中三叠世、晚三叠世以来三大阶段,构造变形主要在印支-燕山期由板内陆/陆叠覆“A”型俯冲形成并定型。

The structure of the area has experienced three stages of long-term interaction of Yangtze block and Songpan Ganzi orogenic belt in Qinling orogenic belt,i.e.pre South China period,South China period Middle Triassic period and Late Triassic period.The structural deformation was mainly formed and shaped in Indosinian Yanshanian period by the"A"type subduction of plate inland/continent.