济阳坳陷构造体制转换与郯庐断裂带的关系探讨

Relationship between structural regime transition of Jiyang Depression and Tan-Lu fault zone

研究了济阳坳陷中、新生代构造体制转换时期的断裂组合特征,并对济阳坳陷构造体制转换与郯庐断裂带的关系进行了探讨。研究结果表明:济阳坳陷中、新生代盆地演化主要受控于欧亚构造域的板块拼接挤压以及滨太平洋构造域和郯庐断裂带的活动2种动力学背景,郯庐断裂在中生代末—新生代初由左旋到右旋的转变是济阳坳陷中、新生代构造体制转换的最直接的原因。

Based on faults analysis, the relationship between structural regime transition of Jiyang Depression of Mesozoic-Cenozoic and Tan-Lu fault zone is discussed. The result indicates that the Eurasian tectonic plate splicing and the faulting in Pacific tectonic domain and Tan-Lu fault zone controlled the basin evolution in Jiyang Depression of Mesozoic-Cenozoic. The transition from sinistral to dextral of Tan-Lu strike-slip fault in the late Mesozoic to early Cenozoic is the main factor of the structural regime transition.