摘要
本文在总结郯庐断裂带的最新研究成果的基础上,对郯庐断裂带山东段深部构造特征、运动学特征和内部结构特征进行了分析,并对郯庐断裂带山东段的中新生代构造演化过程进行了研究。在华南华北碰撞造山时期,郯庐断裂带山东段发生了显著的左旋走滑剪切变形。郯庐断裂带山东段在晚侏罗至早始新世(50Ma前)的左旋走滑直接受控于古太平洋板块向东亚大陆的俯冲,板块俯冲边界的应力直接传递到郯庐断裂带导致其发生走滑运动;早白垩世中期至古近纪,郯庐断裂带山东段内部及两侧盆地的伸展则受控于深部岩石圈减薄、地幔底辟导致的裂陷作用。
Based on new research results,this study analyzed the deep structures,kinematic characteristics and interior structure of the Shandong segment of the Tan-Lu fault zone. The characteristics of the Mesozoic-Cenozoic Tectonic evolution of the Shandong segment of the Tan-Lu fault zone were also discussed. During the period of collision orogenesis between North China block and South China block,the Shandong segment of the Tan-Lu fault zone underwent a sinistral shearing strike-slip deformation. The sinistral strike-slip movement of the Shandong segment had been controlled by the subduction of the ancient Pacific plate toward the east Asian continent from late Jurassic to early Eocene （before 50Ma）. The strike-slip movement of the Tan-Lu fault zone was caused by the stress transferred from the boundary of plate subduction. The extension of the Shandong segment of the Tan-Lu fault zone and the basins beside it was associated with the intracontinental rifting process caused by lithosphere delamination and upheaval of upper mantle.
出处
《地质学报》
EI
CAS
CSCD
北大核心
2010年第9期1316-1323,共8页
Acta Geologica Sinica
基金
徐州市政府项目<徐州市新城区
开发区活断层探测与地震危险性评价>
中石化胜利油田公司项目<郯庐断裂带构造体制转换与山东段西侧油气盆地演化>资助的成果
关键词
郯庐断裂带
山东段
沂沭断裂带
构造演化
中新生代
The Tan-Lu fault zone
The Shandong segment
Yishu fault zone
Tectonic evolution
Mesozoic-Cenozoic
