STRUCTURE, HYDROGEOLOGY, AND THE GEOTHERMAL SYSTEM OF MOUNT UNGARAN AREA, CENTRAL JAVA, INDONESIA

Kusumayudha, Sari Bahagiarti and Markam, Andriyanto and Rahmat, Basuki (2011) STRUCTURE, HYDROGEOLOGY, AND THE GEOTHERMAL SYSTEM OF MOUNT UNGARAN AREA, CENTRAL JAVA, INDONESIA. In: International Conference of Women Engineers and Scientists, 19-22 July 2011, Adelaide, Australia.

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Abstract

Indonesia is well known as a country of volcanoes. There are hundreds active and dying volcanoes, one of which is namely Mount Ungaran. It is a Pleistocene age volcano, located in the Semarang region, Central Java Province. In the present time the volcano is identified being in its post volcanism stage. Some observable fact related to the stage of the volcano is there has been no more volcanic eruption record for a thousand year. In contrary, there exist fumaroles and sulfuric hot steam through fissure on the flank of the volcano. The geologic structures obtained at the surrounding area are reverse faults, strike slip faults, and normal faults. On the other hand, the hydrogeologic system is compiled of fractured complex aquifer system, containing volcanic breccias, sandstones, and lava deposits of andesitic to basaltic composition. Due to the high density of fractures, cracks, and faults, the aquifers are able to transmit surface water and groundwater down to contact with such hot plutonic bodies in the volcanic environment to perform geothermal system. This geothermal system is expressed by the occurrence of side and fissure sulfuric fumaroles eruption. Therefore it can be stated that structures and hydrogeologic condition play important role to the occurrence of the geothermal system in the study area.

Item Type: Conference or Workshop Item (Paper)
Subjects: Q Science > QE Geology
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Sri Lestari
Date Deposited: 25 Apr 2016 09:12
Last Modified: 25 Apr 2016 09:12
URI: http://eprints.upnyk.ac.id/id/eprint/1

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