【摘要】 通过对西峡盆地晚白垩世地层沉积特征的观察研究 ,分析了其形成环境和盆地充填演化历史 .根据古水流特征 ,认为西峡盆地北部边界断层以北是主要物源区 ,南部物源区是次要物源区 ,由北向南依次展布为冲积扇体系、辫状河体系和曲流河体系 ,整个盆地为不对称充填 ,是典型的雁行式排列的走滑引张盆地中的一个更多还原

【Abstract】 Based on the observations of sedimentary features of the Late Cretaceous outcroped in the Xixia Basin,Henan province,the depositional environments and filling history of the Basin are studied.In terms of paleocurrent data,it is proposed that the sediments sources are mainly from outside the north boundary and less from the south boundary.From the north to the south across the Xixia Basin,alluvial fan system,braided fluvial system,meandering fluvial system and fluvio?lacustrine system are distributed spatially.The basin is fulfilled asymmetrically and is typically one of the trans?extensional strike?slip en echelon basins.更多还原