对徐宿弧形构造成因的新认识

NEW RECOGNITION ON THE GENESIS OF THE XUZHOU-SUOXIAN ARCUATE STRUCTURE

摘要: 本文根据区域地质调查资料提出,徐宿弧形构造是一个弧形推覆断裂带,它可划分为三个带:前缘逆冲带,中部推覆带和后部拉伸带。三个带呈东拉西压模式,它是盖层沿基底发生重力滑动的产物。

Abstract: According to the data of regional geological surveys,it is suggested that the Xuzhou-Suoxian arcuate structure is an arcuate thrust-fracture belt,It may be divided into three zones:the frontal thrust zone,the central nappe zone and the rear extensional zone.The three zones display a model of extension in the east and compression in the west.This belt is the product of gravitational gliding of the covers along the basement.