The identification of the sand body of Lower Cretaceous Saihan Formation on the northeastern margin of Tengger depression by controlled source audio frequency magnetotelluric survey
LI Ying-Bin1,2,3
1. Airborne Survey and Remote Sensing Center of Nuclear Industry, Shijiazhuang 050002, China 2. Key Laboratory of Uranium Resources Geophysical Exploration Technology, China Nuclear Industry Group Company, Shijiazhuang 050002,China 3. Hebei Key Laboratory of Airborne Survey and Remote Sensing Technology, Shijiazhuang 050002, China
There has been no substantial progress in uranium prospecting in Tengger depression. Therefore, CSAMT is used to identify the sedimentary characteristics and structural framework of the study area, especially the lower Cretaceous Saihan formation and its sandbodies. Combined with the geological drilling data, through the forward and inverse calculation of the data in the study area, the inversion model and inversion parameters are optimized, the spatial distribution characteristics of the sand body of the lower Cretaceous Saihan formation in the study area are identified, and the development characteristics of the ancient river channel are briefly analyzed, which provides a reference for the direction of uranium exploration.
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LI Ying-Bin. The identification of the sand body of Lower Cretaceous Saihan Formation on the northeastern margin of Tengger depression by controlled source audio frequency magnetotelluric survey. Geophysical and Geochemical Exploration, 2021, 45(3): 616-623.
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