【摘要】 酒泉盆地南缘山前冲断带呈北西西走向,西界止于阿尔金走滑断层,东至榆木山。综合地震、非地震及地面露头资料研究成果,酒泉盆地南缘山前冲断带具有以下特征:是由多个逆冲推履带侧向叠置而成;每个逆冲推履带由于逆冲推覆位于量的差异产生横向调节断层;由于调节断层的分割,构造变形及结构东西方向具有分段的特征;构造变形强度总体表现为西强东弱。更多还原

【Abstract】 Foreland thrust belt in south margin of Jiuquan Basin is assuming NNW direction,in the west it arrives at Altyn Tagh strike-slip fault,and in the east it ends at Yumushan mountain.Synthesize with the seismic,non-seismic data and outcrop,the structural deformation of foreland thrust belt in south margin of Jiuquan Basin have the following characters: it had experienced two deformations,extension in Mesozoic and compression in Cenozoic;the multiple thrust belts superposed laterally;deformation on the plane are characterized by zonation from west to east because of division of the NNE transfer faults,and the strength of structural deformation is strong in west and weak in east.更多还原