扬子地台西北界线之我见  

ON THE NORTHWEST BOUNDARY OF THE YANGTZE PLATFORM

作　　者：丁燕云[1] 李占奎[1] 

机构地区：[1]中国国土资源航空物探遥感中心,北京100083

出　　处：《物探与化探》2007年第6期510-513,共4页Geophysical and Geochemical Exploration

摘　　要：根据重磁资料分析,扬子地台与松潘—甘孜造山带的界线应以武都—文县断裂为界,而不是划在龙门山断裂处。由此可见,整个龙门山地区应划归扬子地台,同时认为松潘—甘孜造山带的基底性质与扬子地台的基底性质完全不同。An analysis of the gravity and magnetic data shows that the boundary between the Yangtze platform and the Songpan-Ganzi orogenic belt should be the Songpan-Wenxian fault rather than the Longmenshan fault. This means that the whole Longmenshan area should belong to the Yangtze platform. Meanwhile, it is thought that the basement rock characteristics of the Songpan-Ganzi orogenic belt are different from those of the Yangtze platform.

关 键 词：重磁场特征 基底性质 构造区 界线 

分 类 号：P631.2[天文地球—地质矿产勘探]