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ON THE NORTHWEST BOUNDARY OF THE YANGTZE PLATFORM |
DING Yan-yun, LI Zhan-kui |
China Aero Geophysical Survey and Remote Sensing Center for Land and Resources, Beijing 100083, China |
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Abstract 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.
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Received: 01 September 2007
Published: 24 December 2007
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