Application of regional gravitation in the geothermal exploration and analysis of geothermal reserves in Lanzhou fault basin

The author revealed the structural form of basement and the location of the fault zone of the Tertiary fault basin in Lanzhou by means of regional gravitation exploration;Predicted the abnormal geot hermal distribution area using hydrogeochemical geot hermal thermometric scale of SiO₂ and predirect temperature test in wells.The author points out the position of geot hermal reservoir through the analysis of the logging material from a deep boreholel ocated in the yard of the factory of petroleum and chemical engineering in Lanzhou.The foreground of geot hermal resources and the advantag eousregion for exploration were provided.