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All Journal IJOG : Indonesian Journal on Geoscience Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources)
J. Wahyudiono
Pusat Survei Geologi, Jl. Diponegoro 57, Bandung
Earth & Planetary Sciences Education Energy Engineering Environmental Science

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Reaktivitas Sesar Kaligarang, Semarang Poedjoprajitno, S.; Wahyudiono, J.; Cita, A.
Indonesian Journal on Geoscience Vol 3, No 3 (2008)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (882.963 KB) | DOI: 10.17014/ijog.v3i3.54

Abstract

http://dx.doi.org/10.17014/ijog.vol3no3.20082Kaligarang Fault which cuts across Semarang City in a north-south direction has been activated for long periods. During Tertiary time, the Kaligarang Fault experienced a dextral wrench movement, which was triggered by a tectonic activity during that time, with a maximum principal stress (σ 1) in a northeast - southwest direction. While on Quaternary time, this fault was reactivated as a sinistral wrench fault. Reactivation of this fault was caused by a principal stress (σ 2) in a north east - south last direction.    
KONTROL SESAR TERHADAP POLA SEBARAN URAT KUARSA DAN MINERALISASI EMAS DAERAH KUTAWARINGIN, JAWA BARAT Wahyudiono, J.; Abdullah, C. Idham; Abidin, H. Z.
Jurnal Geologi dan Sumberdaya Mineral Vol 21, No 3 (2011): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (625.521 KB)

Abstract

The study area is located in Kutawaringin village, about 3.5 kilometers from Soreang city, the capital of Soreang district, Bandung regency. The purpose of this research is to show fault control on the research area that influence the distribution pattern of quartz veins and epithermal gold mineralization. Methodology in this research is initiated by literatur study. All data are compiled as overlaying maps to determine next step activities. Structural observations include macroscopic and mesoscopic. Results of the analyses are in form of structural geological map, main principal stresses distributions map and fault evolution map that could be valuable to develop a dilational zone map of the area. Structural geology investigation suggests that the main controls of the emplacement of andesit and dacite intrusive rocks as hydrothermal and metal minerals source are east-west trending dextral fault. Northwest-southeast trending normal fault are structural corridors along dilational zone. Quartz veins is distributed along dilational zone. The general trend of quartz veins is N 143°E/78°, relatively parallel to the dilational zone.Keywords : structures, dilational zone, alteration zone, mineralization, epithermal, Kutawaringin
Co-Authors A. Cita C. Idham Abdullah, C. Idham H. Z. Abidin S. Poedjoprajitno