STRUCTURAL GEOLOGICAL CONTROL ON THE APPEARANCE OF GEOTHERMAL AREA MANIFESTATION IN GEDONGSONGO, BANDUNGAN, SEMARANG, CENTRAL JAVA BASED ON ANALYSIS OF FAULT FRACTURE DENSITY
Abstrak
Gedong Songo, Ungaran, is a geothermal complex from the part of the Ungaran volcano system which located in the North of the Serayu Mountains as the result of back-arc magmatism during the quaternary period. The presence of surface geothermal manifestations indicates the existence of an active geothermal system in this area. Surface manifestations in Gedong Songo area includes hot springs, fumaroles, steaming ground, and altered rocks.
This study uses a lineament analysis on imagery DEM supported by geomagnetic data and geological mapping. The lineament in this area is identified from DEM. Based on geological field observations and mapping, and also manifestations in Gedong Songo area are controlled by northeast-southwest right strike slip faults structures, and the presence of structures is reinforced by geomagnetic anomalies that indicate areas affected by heat experiencing demagnetization.
Teks Lengkap:
PDF (English)Referensi
Goff, F., dan Janik, C. J. 2000. Encyclopedia of Volkanoes. Academic Press
Giggenbach, WF. 1988. Chemical Techniques in Geothermal Exploration Chemistry Division, DSIR, Private Bag.
Hochstein, M.P. dan Browne, P.R.L. 2000. Surface Manifestation of Geothermal Systems with Volcanic Heat Sources, In Encyclopedia of Volcanoes, H.Sigurdsson, B.F.. Houghton, S.R., McNutt, H., Rymer dan J. Stix (eds.), Academic Press.
Paramitahaty, Intan. 2019. Kendali Struktur Geologi Terhadap Kemunculan Manifestasi Panas Bumi Daerah Gunung Slamet Berdasarkan Analisa FFD. Jogjakarta. Jurnal PANGEA
Phuong, Nguyen Kim, et al. 2005. Geochemistry of the Ungaran Geothermal System, Central Java, Indonesia. Proceedings Joint Convention Surabaya 2005 – HAGI-IAGI- PERHAPI.
Pratomo, I., 2006. Klasifikasi gunungapi aktif Indonesia, studi kasus dari beberapa letusan gunung api dalam sejarah, Jurnal Geologi Indonesia, Desember 2006, 1(4), 209–227.
Schoen, R., White, D.E., and Hemley, J.J., 1974, Argillization by descending acid at Steamboat Springs, Nevada: Clays and Clay Minerals, v. 22, p. 1- 22.
Setyawan Agus, Harri Yudianto, Jun Nishijima and Saibi Hakim. 2015. Horizontal Gradient Analysis for Gravity and Magnetic Data Beneath Gedong Songo Geothermal Manifestations, Ungaran, Indonesia, Proceedings World Geothermal Congress 2015 Melbourne, Australia, 19-25 April 2015
Setyawan, A., Fujimitsu, Y., Fukuoka, K., Nishijima, J., Ehara, S., Saibi, H., 2007, Geophysical Investigation of Ungaran Volcano, Central Java, Indonesia, Proceedings 29th , New Zeland.
Thanden RE, Sumadirdja H, Richard PW, Sutisna K. dan Amin TC., 1996, Peta Geologi Regional Lember Magelang dan Semarang, skala 1 : 100.000, Pusat Penelitian dan Pengembangan Geologi, Bandung.
DOI: https://doi.org/10.24198/bsc.v22i1.52306
Refbacks
- Saat ini tidak ada refbacks.