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Geothermal Energy

Science – Society – Technology

Fig. 4 | Geothermal Energy

Fig. 4

From: Geophysical characteristics of a fault system in the northern Central Range of Taiwan and its applications for geothermal energy exploration

Fig. 4

Crossplot of the NPHI and RHOB log values with the colors representing the GR log values. Based on the GR values, the upper left side of the thick blue dashed line comprises metasandstone and sandy slate and the lower right side of the blue dashed line comprises slate. The unfractured rocks have low NPHI and high RHOB and are present to the left side of the red dashed line. The fractured porous rocks mainly have high NPHI and low RHOB and are present to the right side of the red dashed line

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