Study on distribution and characteristics of geothermal resources in sedimentary basins in Guangdong Province
The geothermal resources in Guangdong Province can be divided into two types,uplift mountain type and sedi-mentary basin type,according to their distribution geomorphic structure characteristics and main heat transfer modes.The cur-rent situation of geothermal resources of uplift mountain type shows that they are widely dispersed and locally concentrated,while geothermal resources of sedimentary basin type are mostly distributed in the coastal zone.The distribution status,ther-mal storage and burial conditions and hydro-geological characteristics of sedimentary basin geothermal resources in Guang-dong Province are described and analyzed to find out the distribution and characteristics of sedimentary basin geothermal re-sources.The results show that:The geothermal resources of Guangdong sedimentary basin are mainly distributed in five places:Leizhou Peninsula sedimentary basin geothermal field in Zhanjiang City,Maoming sedimentary basin geothermal field in Maoming City,Chenghai sedimentary basin geothermal field in Shantou City,Fuyang sedimentary basin geothermal field in Chaozhou City and Dongfeng sedimentary basin geothermal field in Chaozhou City.The geothermal fluid temperature is mostly 35.0℃～50.0℃,which belongs to low temperature geothermal resources,and all of them are porous layered heat reservoirs.The geothermal resources of sedimentary basin are mainly heat transfer,and there is also convective heat transfer.The conclu-sion of this study provides a basic understanding of the geothermal resources in Guangdong Province,and also provides a direc-tion for the study of the genesis and heat transfer mechanism of basin-type geothermal resources.
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