Suharno, Suharno and Nindya, F and Rustadi, Rustadi and Zaenudin, Ahmad and Mulyatno, Bagus Sapto CHARACTERISTICS OF MOUNTAIN ARJUNO-WELIRANG GEOTHERMAL JAWA TIMUR PROVINCE, INDONESIA. In: Indonesia International Geothermal Convention & Exhibition 2013.

Text Characteristic Of Mountain Arjuno-Welirang Geothermal Jawa Timur Province, Indonesia_2013.pdf Download (4MB)

Abstract

The analysis of the Arjuno-Welirang geothermal field Jawa timur Province, Indonesia. The field situated at longitude between 112°29'12" and 112°37'29" and at latitude between -7°37'36" and -7°49'51". The surface manifestation consist of hot spring, fumarol and alteration rocks. The hot spring discharge expose an elevation 1350 m asl, 1600 m asl, fumarol and solfatara spreadout within the summit of Mt. Arjuno and Mt. Welirang, at elevation about 3100 m asl. The alteration rocks spreadout in the two location surrounding Plupuh Crater and at a lower part of Mt. Pundak. Geology Analysis, such as surface manifestation and geology structure analysis and geochemical analysis conducted due to characterises the reservoir condition of the Mt. Arjuno-Welirang geothermal system. Tentative result of the research show that the Arjuno-Welirang geothermal system is chlorite water, although the result of reservoir analysis indicated the bicarbonate water (HCO₃). Its caused by interaction between hot water with meteoric water and water level, closed to the surface. The reservoir temperature up to 175°C. The reservoir rocks of the system is andesitic basaltic rocks. The hydrothermal system should be product of water interaction with vulkano-magmatic. The hot water before reach the surface predicted has interacted with sediment rocks. The other hand, that the manifestation is product the lateral flow or out flow.

Item Type:	Conference or Workshop Item (Paper)
Subjects:	G Geography. Anthropology. Recreation > GB Physical geography
Depositing User:	BAGUS SAPT
Date Deposited:	31 Aug 2026 02:56
Last Modified:	31 Aug 2026 02:56
URI:	http://repository.lppm.unila.ac.id/id/eprint/54911

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