Application of geothermal exploration

As can be seen from the isothermal profile of modern volcanic geothermal area shown in Figure 7.3, all drainage areas protrude upward and extend to the surface, indicating that there are obvious geothermal anomalies.

Fig. 7.3 Schematic diagram of geothermal anomaly

Figure 7.4 shows the isotherms of different depths of Dengwu geothermal field in Guangdong Province. As can be seen from the figure, the isotherm shapes at different depths are basically similar, and there is a geothermal center in the middle, south and north. Its peripheral isotherm is roughly gourd-shaped, and its long axis is near east-west direction.

Environmental and engineering geophysics

Figure 7.4 Isothermal diagram of geothermal field