1. Tianjin Geothermal Exploration and Development-Designing Institute, Tianjin 300250,China 2. Ningxia Institute of Geological Engineering,Yinchuan 750004,China
As a kind of clean and continuous energy, geothermal resources will play an enormous role in the development of China’s economy. In this study, data processing and analysis included calculation of 2D skewness and electric strike of the MT profile, and NLCG 2D inversion was performed on TM data, which consisted of 51 measurement points from line L1 and line L2 in western area of Yinchuan Basin. The result shows that the western margin of the Yinchuan Basin can be divided into three layers from top to bottom:low-resistivity layer, relatively high-resistivity layer and low-resistivity layer. Combined with the known geothermal geological data, the authors hold that Hongliugou Formation of Neogene is the principal heat reservoir and exploitation bed, followed by Qingshuiying Formation of Palaeogene and Ganhegou Formation of Neogene. The result shows that using MT method can well delineate the range of deep geothermal reservoir in the Yinchuan Basin and that MT method is suitable for exploring buried geothermal resources in deep plain.
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