摘要
在延庆怀来地区穿过深断裂位置开展的浅地震反射测量获得了高分辨率的地壳浅部结构图像。结果表明,研究区内浅层断裂发育,覆盖层分层清晰,具有良好的反射性质。基底为前震旦纪地层,埋深500 ～1 000m 不等,由一系列无规律的弱反射构成。狼山断裂是延矾盆地北缘的控制性断裂,在剖面上呈铲形,反映了年轻发育阶段的伸展构造特征。
High resolution shallow seismic reflection measurements were carried out crossing deep faults which were revealed by deep seismic reflection profiles in Yanqing-Huailai region, and high-resolution images of shallow crust were obtained in this region. The results indicate that the sedimentary layer is characterized by good reflectivity and there are well developing shallow fault structures in this region. The basement of the basin consists of pre Sinian layers. It is characterized by irregular weak reflectivity and its depth is about 500～1000m. The Langshan fault is a listric fault on profile and is a controlling fault at the northern edge of Yanqing-Fanshan basin. It indicates stretching structure of a young developing basin.
出处
《地震地质》
EI
CSCD
北大核心
1999年第4期425-430,共6页
Seismology and Geology
基金
中国地震局"九五"重点项目!(9504080201)
