Geology and development of geothermal field in Neogene Guantao Formation in northern Bohai Bay Basin: A case of the Caofeidian geothermal heating project in Tangshan, China |
DONG Yuexia,HUANG Hongxiang,REN Lu,LI Hongda,DU Zhiqiang,E Junjie,WANG Qi,ZHANG Xiaoming |
Fig. 3. Overlay map of geothermal gradient contours and geothermal anomalies in the Nanpu sag and its surrounding areas. |