摘要
为查明东北地区盆地群的基底构造特征,从大地电磁测深方法入手,在前人工作的基础上,将该地区的一条满洲里-绥芬河地学断面和11条大地电磁剖面组构成了2张地球物理剖面栅状图,对所整理的剖面逐个进行讨论,通过栅状图对松辽盆地与大三江盆地群的基底特征给出进一步解释,并得出以下结论:①松辽盆地受断裂控制东西向呈高-低-高的电性分布,整体看南部电阻高于北部;②佳木斯地块与兴凯地块阻值浮动小,岩石圈结构稳定,完达山地块上下、南北阻值差异大,相比而言结构稳定性较差。几个地块之间都是越向东北方向,低阻范围越大,进一步印证了“大三江”盆地的统一性。
In order to find out the characteristics of the basement structures of the basin group in Northeast China,two earth physical profile grid diagrams were constituted by a Manzhouli-Suifenhe geological section and 11 magnetotelluric section groups in this area,starting from the magnetotelluric sounding method and based on previous work.The authors then discuss the sorted profiles one by one,and further explain the basement characteristics of the Songliao Basin and Dasanjiang Basin Group through grid diagrams,and finally give the following conclusions:①The Songliao Basin is controlled by the fault and presents high-low-high electrical distribution in the east-west direction.The resistance in the south is higher than that in the north as a whole.②The resistance values of the Jiamusi block and the Khanka block are small,and their lithospheric structures are stable.The upper-lower and north-south resistance values of the Wandashan block have large differences,and the structural stability is relatively poor.The more to the northeast among the several blocks,the larger the low resistance range is,which further confirms the unity of the Dasanjiang Basin to a certain extent.
作者
战启宁
李鹏
鹿琪
赵鹏飞
刘财
ZHAN Qi-ning;LI Peng;LU Qi;ZHAO Peng-fei;LIU Cai(College of Geo-exploration Science and Technology,Jilin University,Changchun 130026,China)
出处
《世界地质》
CAS
2021年第3期703-710,共8页
World Geology
基金
国家自然科学基金项目(41874125,41430322)。
关键词
松辽盆地
大三江盆地
大地电磁测深
Songliao Basin
Dasanjiang Basin
magnetotelluric sounding
