Geochemistry of a Nonvolcanic Geothermal Area in Pohon Batu, West Seram Regency, Moluccas
- Key words
- Indonesia, Moluccas, Non-volcanic, geochemistry
- Conference
- Stanford Geothermal Workshop
- Year
- 2016
- Session
- Geochemistry
- Language
- English
- Paper number
- Yushantarti
Full text
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Abstract
Indonesia has many geothermal areas which are associated with non volcanic environment. One of them is Pohon Batu, West Seram Regency, Moluccas. The geothermal manifestations are only Pohon Batu 1-7 hotsprings, the temperatures are about 40-60,9oC with neutral pH. Physiographically, it is included Banda Dalam arc non volcanic which is consisted of metamorphic rocks in the Permian-Triassic. Pohon Batu has chloride-bicarbonate type of water based on Cl-SO4-HCO3 diagram and plots in partial equilibrium zone based on Na-K-Mg diagram. The temperature of reservoir is about 175-oC from Na-K geothermometry.
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