北武夷永平逆冲推覆构造特征初析

The preliminary analysis of Yongping thrust-nappe structure in north Wuyi

永平逆冲推覆构造位于华夏板块北缘,系永平—石塘推覆构造的前缘逆冲带组成部分,由一系列规模不等,方向基本一致,倾向东的叠瓦逆冲推覆断层组成,卷入地层有新元古界及石炭系—三叠系,推覆方向由南东向北西。主要形成于燕山早期,动力来源可能为印度板块与欧亚板块的碰撞。

Yongping thrust-nappe structure is located in the northern margin of Cathaysia plate and it is the front zone of the Yongping-Shitang nappe structure.It is composed of a series of imbricated thrust-nappe faults,which have different scales and basically dipping east.The strata involved are Neoproterozoic and Carboniferous-Triassic,and the nappe direction is from southeast to north northwest.Yongping thrust-nappe structure was mainly formed in the early Yanshan period,and the dynamic source may be the collision between the Indian plate and the Eurasian plate.