Application Petrography on the Process of Water-Rock Interaction in the Neutral Thermal Water of Tatun Volcano Group, Taiwan

Abstract

It exists a few neutral thermal water in Tatun Volcano Group of Taiwan, and where has the highest geothermal potential area, and a serious corrosion problem during drilling. This study provides the information for solving corrosion solution and expects to provide much better constraints for geothermal power plant location of the Tatun Volcano Group by petrography. The preliminary results display that lava consists of augite, hornblende, andesine, labradorite, zoning plagioclase and calcite, and the calcite replaces the plagioclase. The pyroclastic rock has augite, zoning plagioclase, and quartz. Finally, this study applies the characteristics of petrography of full view to provide the process of water-rock interaction.