地震折射波法探测研究张强地区的构造特征

STRUCTURE FEATURE IN ZHANGQIANG AREA BASED ON REFRACTIONAL DATA

张强地区位于中朝地台北缘的吉黑地槽区，其基底岩系和构造特征与中朝地台的基底和构造特征有明显的差别，通过２００ｋｍ的折射波法探测，得出如下结论：（１）本区基底构造线方向呈现近ＳＮ或ＮＮＷ向，二条此方向的断层划分出三个构造单元。（２）该区内中生代前基底分为两套地层，其岩性、断层特征和基底埋深均有差别。

Zhangqiang area is located in jihei Geosyncline at north edge of Sino Korean Platform.lt's Premesozoic bedrock and structural feature are different from Sino Korean.The results obtained by means of 200km refraction profile are as follows: 1.The bedrock structure line is in the direction of SN or NNW.Three structure units are separated by two faults in this direction. 2.There are two Premesozoic bedrocks in this area,their rock quality,fault feature and bedrock deepth are different.