摘要
笔者通过遥感图像解译，在甘肃北山东部沙枣泉北山地区发现一个旋扭构造，根据山脊、水 系的弧形转折和块状均一的影纹分别判泽出旋扭构造的旋迴带和砥柱，经地面检查，已得到证实。 据旋迴面特征，确定了徒扭面性质和旋扭方向，进而据砥柱由火山岩组成和断裂分布特征分析了 旋扭构造成因。
The author found a structure resulting from rotation and shearing at the northern mountain area of Sha Zaoquan in the east of Northern Mountain of Gansu province with interpretion of remote sensing images. The vortical zone and nuclear column of the structure resulting from rotation and shearing were interpreted respectively, based on curvipplonar turns of ridges and drainage system and texture of uniform blocks, and it was demonstrated by ground examination., the nature of the surface of rotation and shearing and the directic,ction of structure resulting from rotation and shearing were definited on the nature of vortical surface. The reason of the structure resulting from rotation and shearing was analyzed further on the composition of volcanic rocks and the distribution of fractures.
出处
《国土资源遥感》
CSCD
1990年第4期59-63,共5页
Remote Sensing for Land & Resources
