Abstract:
Yimen-Luoci fault is the main fault of the Yimen-Luoci faulted belt, which is characterized by large scale multistage activities. It is difficult to determine the location and features of the basin-controlling fault due to the fact that loose sediments several to tens of meters in thickness are widely spread over the NS-trending beaded-like Quaternary basins, controlled by Yimen-Luoci faulted belt in Jiaoxi Town, Luquan County, Yunnan Province. The position, width and attitude of the basin-controlling buried fault were found by means of geological survey and gas radon measuring in this study. The measuring result is well consistent with topographical features and regional tectonics, and hence the authors hold that gas radon measuring is suitable for investigation of buried active faults in intermount basin.
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