摘要
运用丰富的三维地震资料,详细刻画了辽东湾坳陷东部地区三条主干走滑断裂的平面和剖面特征,不同走滑断裂发育特征不同,以及同一断裂也具有分段差异性。整体而言,辽东湾坳陷东部地区在平面上,由东到西、从南北两端向中间,走滑强度逐渐增大。通过构造物理模拟实验的方法,对辽东湾坳陷三条主干走滑断裂的走滑位移量进行估算,结果表明,辽中地区走滑断裂走滑量大于辽东地区;而三条断裂在渐新世时期的走滑位移量和平均走滑位移速率均是最大的,说明辽东湾坳陷东部地区在渐新世时期走滑活动强烈。
Based on plenty of three dimensional seismic data, the horizontal and sectional characteristics of three main strike-slip faults in detail in the eastern Liaodong Bay Depression are described. Different faults have different characteristics and even the same fault has segmented differential features. The overall degree of strike-slip gradually increased from east to west, from north and south to the middle. With the method of physical modeling test, the strike-slip displacements of three main strike-slip faults in the eastern Liaodong Bay depression are estimated. The results show that the strike-slip displacement of Liaozhong Area is larger than that of Liaodong Area, and the strike-slip displacement and average strike-slip speeds of three strike-slip faults are the maximum in the Oligocene, illustrating there were strong strike-slips in the Oligocene.
出处
《地质力学学报》
CSCD
北大核心
2017年第3期459-466,共8页
Journal of Geomechanics
基金
国家科技重大专项(2016ZX05024-002-001)
辽东湾探区整体构造解释及盆地构造演化研究(CCL2013TJXSBS1881)
关键词
走滑断裂
走滑位移量
物理模拟实验
辽东湾坳陷
郯庐断裂带
strike-slip fault
strike-slip displacement
physical modeling test
Liaodong Bay depression
Tan-Lu fault zone
