摘要
通过布设4条浅层地震勘探测线探测旧州断裂,对地震勘探数据进行重新处理,获得了高信噪比、高分辨率的浅层地震剖面,清晰地显示了旧州断裂的浅部构造特征,结合石油地震勘探剖面、深地震反射剖面资料,获得旧州断裂的深浅构造特征,在浅部断裂为一条视倾角较陡的正断层,上断点埋深130~155 m,断裂在第四纪以来的活动时间为中更新世;旧州断裂和其他6条断裂为一组,并与倾向SE的一条断裂一起形成断陷盆地;断裂大约在深度3.5 km左右归并到一条向西倾的断裂上,下延终止于结晶基底之上。
Four shallow seismic survey lines were laid to detect old faults. By reprocessing seismic data, a shallow seismic profile with high signal-to-noise ratio and high resolution is obtained. It clearly shows the shallow structural characteristics of the Jiuzhou fault, combined with the oil seismic exploration profile and the deep seismic reflection profile data. The deep and shallow structural characteristics of the Jiuzhou fault were obtained. In the shallow part, the fault was a positive fault with a steep inclination, and the upper break point was buried 130 to 155 m deep. The time of activity since the Quaternary period was the Middle Pleistocene;The Jiuzhou fault and the other six faults are a group,and together with a fault that tends to SE, a fault basin is formed;The fracture is merged at a depth of about 3.5 km to a fault that is inclined westward, and the lower extension ends on the crystalline base.
作者
朱坤静
彭远黔
ZHU Kunjing;PENG Yuanqian(Handan Earthquake Monitoring Center,Handan 056002,China;Hebei Earthquake Agency,Shijiazhuang 050021,China)
出处
《华北地震科学》
2020年第3期88-96,共9页
North China Earthquake Sciences
基金
磁县—大名断裂晚第四纪活动特征研究(DZ20190425087)。
关键词
廊固凹陷
旧州断裂
浅层地震勘探
深部构造特征
Langgu depression
the Jiuzhou fault
shallow seismic exploration
deep structural features