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All Journal IJOG : Indonesian Journal on Geoscience Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources)
M. Hendrizan
Research Center for Geotechnology LIPI, Komplek LIPI, Gd. 70 Jln. Sangkuriang, Bandung
Earth & Planetary Sciences Education Energy Engineering Environmental Science

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Karakteristik Batuan Sumber (Source Rock) Hidrokarbon pada Formasi Batuasih di daerah Sukabumi, Jawa Barat Praptisih, Praptisih; Kamtono, Kamtono; Putra, P. S.; Hendrizan, M.
Indonesian Journal on Geoscience Vol 4, No 3 (2009)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (812.796 KB) | DOI: 10.17014/ijog.v4i3.78

Abstract

http://dx.doi.org/10.17014/ijog.vol4no3.20092The purpose of the study carried out on the claystone of Batuasih Formation in Sukabumi area is to find out the hidrocarbon potential and its characteristics. The Batuasih Formation, overlying conform- ably the Walat Formation, consists  of claystone, dark gray, shaly, brittle, containing clay ball, calcite veins, with carbonate intercalations. The geochemical analysis conducted on twelve samples shows the TOC values vary between 0.49 – 1.14 % and Tmax of 431 – 434o C. Four samples are categorized to be immature, while the rests are mature. HI values of the Batuasih Formation varying from 77-191 mg HC/ TOC indicate that the samples are of C and CD organic facies. Based on those analyses, the source rock is favourably potential to generate a small quantity of hydrocarbon and gas. The hydrocarbon source rock potential level in the investigation area shows a poor to fair organic richness, and its kerogen is included into types II and III. The source rock quality based on the Hydrogen Index (HI) value tends to be a gas prone. 
Depositional Environment of the Batuasih Formation on the Basis of Foraminifera Content: A Case Study in Sukabumi Region, West Java Province, Indonesia Hendrizan, M.; Praptisih, Praptisih; Putra, Purna S.
Indonesian Journal on Geoscience Vol 7, No 2 (2012)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3546.177 KB) | DOI: 10.17014/ijog.v7i2.139

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DOI: 10.17014/ijog.v7i2.139The research was carried out on the sediments of the Batuasih Formation cropping out at Batuasih Village, Cibatu River, Padaarang Sukabumi. Data obtained from field observation, as well as foraminifera and sedimentology analyses conducted in the laboratory, were used to interpret its depositional environment. The investigation was focused on planktonic and benthic foraminiferal assemblages for depositional environment interpretation that might not be used by previous researchers. The Batuasih Formation is composed of black shaly claystone, where the lower part is rich in clay ball, and limestone intercalations in the upper part of the formation. In Cibatu Section, no clay balls is recognized in the lower part, but intercalations of limestone still occur. However, a contrast difference is found in Padaarang section, where green claystone interbeds with fine-grained sandstone. The Batuasih Formation conformably overlies the Walat Formation containing conglomerate. Foraminifera fossil found in the Batuasih Formation consists of bad preserved black benthic and planktonic foraminifera, more abundant towards the lower part of formation. Based on foraminifera assemblage comprising genus Uvigerina, Cibicides, Elphidium, Operculina, Bulimina, Bolivina, Eponides, and Neoconorbina, supported by sedimentology data, the Batuasih Formation was deposited in a shallow to deep marine environtment, during Early Oligocene (P19) time. Upwards to be the Rajamandala Formation, the depositional environment tends to be shallower gradually.
PERKEMBANGAN CEKUNGAN ANTAR-BUSUR DI DAERAH MAJALENGKA-BANYUMAS: SEJARAH TEKTONIK KOMPLEKS DI WILAYAH BATAS KONVERGENSI Permana, H.; Putra, P. S.; Ismiyanto, A. F.; Setiawan, I.; Hendrizan, M.; Mukti, M. M.
Jurnal Geologi dan Sumberdaya Mineral Vol 21, No 2 (2011): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (535.006 KB)

Abstract

An intra-arc basin, Late Miocene to Pliocene in age in the region of Majalengka - Banyumas area has been an interesting theme to be discussed. The volcanoclastic sediments pathway in this basin showing different direction compare to the time equivalent sediments in the adjacent Bogor Trough. Bouguer anomaly analyses clearly imaged the E-W regional structural grains of Bogor – Bandung –Majalengka crosscut pair of NW-SE Gabon dan Pamanukan-Karangbolong strike slip fault that parallel with the postulated intra-arc basin. These NW-SE structural lineaments could be responsible for the development of sub-basins and volcanic products through splay or duplex fault or pull apart mechanism in context oblique plate subduction in Early Miocene. Study of Majenang sub-basin, whereas epiclastic rocks deposited as sediment-gravity flows and their pyroclastic, shows the significance variation, upper, middle slope to basinal plain within the deep sea submarine-fan complex of the Late Miocene-Pliocene age during the development of this basin. The source of sediment deposits was associated with calk alkalin back arc volcanic edifice that grown and separated the sub-basins and other volcanoclastic source from Southern Mountain (Old Andesite Formation). The development of this basin indicates complex history since this region is now inverted and built the mountain range. Therefore further tectonic reconstruction in this region is required for better understanding the geologic history merit further geological exploration prospect.Keywords: intra-arc basin, volcanoclastic, Bouguer anomaly, sediment-gravity flows, back arc volcanic, calk alkalin
Co-Authors A. F. Ismiyanto, A. F. H. Permana, H. I. Setiawan, I. Kamtono Kamtono M. M. Mukti, M. M. P. S. Putra Praptisih Praptisih Purna S. Putra