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INDONESIA
Journal of Geosciences and Applied Geology
Published by Universitas Padjadjaran
ISSN : 25793136     EISSN : 25793136     DOI : https://doi.org/10.24198/gsag.v7i3
Core Subject : Science, Engineering,
Earth & Planetary Sciences Engineering
Journal of Geological Sciences and Applied Geology (GSAG) is a National multidisiplinary Journal focus on Geological Sciences, Applied Geology, and Geological Engineering and Earth Science. Our Mission is to publish research related to (but not limited) Geology Petrology Paleontology Stratigraphy Sedimentology Remote Sensing Geomorphology GIS Engineering Geology Geotechnics Geochemistry Geophysics Geological Hazard and Disaster Geopark Hazard Mitigation Geography Earth Sciences
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Geologi
Articles 7 Documents
 1 
Search results for , issue "Vol 2, No 6 (2018): Journal of Geological Sciences and Applied Geology" : 7 Documents clear
GEOPLANOLOGY MODELING IN THE PLANNING AREA OF MAJALENGKA, WEST JAVA Dede Nurohim; Channia Princessca; Nur Khoirullah; Nana Sulaksana; Teuku Yan Waliana
Journal of Geological Sciences and Applied Geology Vol 2, No 6 (2018): Journal of Geological Sciences and Applied Geology
Publisher : Faculty of Geological Engineering, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/gsag.v2i6.20871

Abstract

Based on the geological condition, the study area consisted of carbonate sandstone units (Tmbp), claystone units (Tml), non-carbonate sandstone units (Tpbp), andesitic intrusions (Ia), volcanic breccia units (Qbv), and alluvium (Qal) units. The different types of constituent rocks will affect the innate characteristics or properties of the rock. The regional genetic units explain kinship relations between lithology, morphology, and tectonics. It is used to determine the genetic processes that occur in an area which will later be developed into the smallest units in the geological analysis. In terms of spatial planning, the geological analysis is needed to produce an ideal area in terms of water adequacy, environmental carrying capacity, and disaster. In accordance with Law No. 11 of 2011 concerning the district development plan of Majalengka, then a layout plan emerged that would be applied to the area. Especially in the research area, land suitability covers a possible area that has a value of> 131, spread in the north to the west of the research area, with high to the very high land capability to be developed. The constrained area which has a value of 121-131 is spread in the north to south of the research area, with the ability of the land to be developed. And the limitation area has a value of <121 dominating in the northwest to the southeast of the research area, with low land capacity - very low to be developed. Based on the analysis, there are still some areas that are not in accordance with the pattern of development which should be mainly the development of protected areas.
DETERMINATION OF POTENTIAL HYDROCARBON AND TECTONOSTRATIGRAPHY ANALYSIS BASED ON 2D SEISMIC IN PADAMARANG SUB-BASIN, BONE BASIN, SOUTH PART OF SULAWESI Fauzan Aditya Haqiqie; Edy Sunardi; Nisa Nurul Ilmi; Agus Santa Ginting
Journal of Geological Sciences and Applied Geology Vol 2, No 6 (2018): Journal of Geological Sciences and Applied Geology
Publisher : Faculty of Geological Engineering, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/gsag.v2i6.20872

Abstract

Sulawesi is a main island in Indonesia that has a complex geological setting. This complexity is caused by assemblage of 3 major plates called as triple junction. Repercussions of these plates assemblage is emerging many basins in Sulawesi area, Bone Basin is one of it. Bone Gulf is a prospect basin for petroleum exploration. Bone Gulf is a frontier area for hydrocarbon exploration. In order to understand and to determinate lead of a frontier area, Seismic interpretation through 2D seismic data is required. 2D seismic interpretation in this area of study using tectonostratographic approach. This study could be a reference and recommendation for further hydrocarbon exploration in this area. This study shows a result that in Bone Basin has 3 main sub-basins (Padamarang, North Kabaena, and South Kabaena) separated by basement highs and this research focused in Padamarang Sub-basin. There are 4 Tectonostratigraphic units in Padamarang Sub-basin, these are include basement (Unit X), Early Rifting (Unit A), Rifting (Unit B), Post Rift (Unit C), dan Post Rift (Seabed/ Unit D & E). There are 2 lead located in Late Miocene Carbonate buildups (represents in seismic section as mounded seismic horizon) showed in BN07-06 and BN07-07 seismic cross section on Padamarang Sub-basin.
THE PRESENCE OF REVERSE SLIP FAULT AND ITS IMPLICATION TO GEOMORPHOLOGY DEVELOPMENT AND LITOLOGY DISTRIBUTION AT CIKASO REGION, CIAMIS DISTRICT, WEST JAVA. Iyan Haryanto; Anisa Ayu Saputro; Alvin Adam Arifin; Nisa Nurul Ilmi; Edy Sunardi
Journal of Geological Sciences and Applied Geology Vol 2, No 6 (2018): Journal of Geological Sciences and Applied Geology
Publisher : Faculty of Geological Engineering, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/gsag.v2i6.20863

Abstract

Distribution of stratigraphic sequence as the basis of various geological studies has been carried in many researches. The presence of various rock can be affected by tectonic events that have occurred before, during, and after their formation. Besides that, control of geological structure will support other research such as geomorphology, and stratigraphy. This research purpose to know what structure develop and correlation between structure and rock distribution, in Cikaso Region, Ciamis District, West Java. The method of this paper are geological mapping and studio analysis. Geological mapping carried to take out data of lithology strike dip and structure. And studio analysis to processed data with software. Geomorphology of research area are four units, that are structural hills of steep slope unit, structural hills of rather steep slope unit, structural plain of sloping slope unit, and structural plain of very sloping slope unit. There are two geology structure, are Cikaso Thrust Fault and Cigayam Sinistral Shear Fault. Based on lithostratigrapgic aspect, they are five rocks units. From old to young are Volcanic Breccia, Non Carbonate Sandstone, Clastic Limestone, Carbonate Sandstone, and Carbonate Claystone.
LEAD IDENTIFICATION BASED ON SEISMIK 2D DATA, NORTH KABAENA SUB-BASIN, BONE BASIN, SOUTHERN SULAWESI Fiqry Darwansyah; Edy Sunardi; Nisa Nurul Ilmi; Agus Santa Ginting
Journal of Geological Sciences and Applied Geology Vol 2, No 6 (2018): Journal of Geological Sciences and Applied Geology
Publisher : Faculty of Geological Engineering, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/gsag.v2i6.20874

Abstract

The research was conduct in north Kabaena sub – basin in the middle of the Bone Bay and it is the result of tectonic development of Sulawesi since the early Miocene. Since early Miocene tectonic development creating spaces for the accommodation process of sedimentation in Bone Bay. The existence of a process of sedimentation in the Bone Bay allows the existence of oil and gas. As a contribution to the development of science and oil & gas industry in Indonesia, study of the north Kabaena sub – basin was conducted with seismic 2D and gravity anomalies. This study is aiming to find out potential area through the subsurface contour maps. This research start with the analysis of the fault on the 2D seismic interpretation and aided by gravity anomaly data, followed by horizon interpretation using tectonostratigraphy approach as a marker. Both interpretation is a material to make subsurface contour maps. Through this research, we identified 5 packs of rocks from old to young is unit X, unit A, unit B, and unit C&D, and we proposed a lead's which is at unit C with carbonate build up type.
SOURCE ROCK POTENTIAL AND DEPOSITIONAL ENVIRONMENT OF OIL SHALE BASED ON PETROGRAPHY CHARACTERISTICS AND ORGANIC GEOCHEMISTRY IN KAPUR IX, WEST SUMATRA Wiryadi Rizkiputra Rahmola; Ildrem Syafri; Winantris Winantris; Nana Suwarna
Journal of Geological Sciences and Applied Geology Vol 2, No 6 (2018): Journal of Geological Sciences and Applied Geology
Publisher : Faculty of Geological Engineering, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/gsag.v2i6.20868

Abstract

The research area were located in the Kapur IX District, Lima Puluh Kota Regency, West SumatraProvince. The research focused on Kapur IX Intramontane Sub-basin filled with oil shale. Theanalysis was carried out on shale samples of the Kapur IX Intramontane Sub-basin collected fromoutcrops to evaluate the source rock characteristics, including type of oil shale, depositionalenvironment, and dispersed organic matter. Geochemical analyses include total organic carbon(TOC) and Rock-Eval Pyrolysis, while organic petrographic analysis comprises organic materialcomposition and vitrinite reflectance. Based on the results the oil shale of the study area has lowto excellent quality and richness, type II and II kerogen content, with the maturity level of lateimmature to early mature. The dominant lamalginite maceral content in the sample tends toindicate the oil shale in the research area is a Green River type. The liptinite maceral group isdirectly proportional to the value of Potential Yield (PY) indicating that the maceral group, especiallyalginite plays a role in producing hydrocarbons in the oil shale of the study area. Based on thecomposition of maceral data, the depositional environment of oil shale of the Kapur IXIntramontane Sub-basin is interpreted to be a lacustrine environment with brackish watercondition.
GEOMORPHOLOGIC AND STRATIGRAPHIC DETERMINATION USING OUTCROP DATA, THIN SECTION AND MICROFOSSIL ANALYSIS IN BENTARSARI AREA, BREBES DISTRICT, CENTRAL JAVA Viska Triaraminta Dewi; Nurdrajat Nurdrajat; Yusi Firmansyah; Kurnia Arfiansyah Fachrudin
Journal of Geological Sciences and Applied Geology Vol 2, No 6 (2018): Journal of Geological Sciences and Applied Geology
Publisher : Faculty of Geological Engineering, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/gsag.v2i6.20876

Abstract

Administratively, Bentarsari area was located in Salem Sub-District and Brebes District in Central Java Province with coordinate 108°46’45,15” - 108°49’28.29” BT - 108°39’32.4” BT and 7°7’40.34” LS - 7°10’22.22” LS.  This research aims is to give an understanding about geological condition in geomorphology and stratigraphy aspects which are described by thematic map in 1:12.500 scale within an area of 25km2. This research was accomplished with surface data (outcrop) and field orientation method using of GPS, geological compass, loop, geological hammer, comparator, and any other tools. Afterward, thin section and fossil analysis were also collected to determine the type of rocks and the age of the stratigraphy unit. This research will include the classification of geomorphology unit based on 3 aspects, which are morphography,  morphometry, and morphogenetic and also classification of stratigraphy unit, based on characteristics of rocks such as rock texture, mineral contents and fossil contents. The geomorphology of the Bentarsari region can be divided into 3 (three) geomorphological units, namely: the alluvium high altitude fluvial unit, high hills of steep structural sediments unit, and very steep high structural sedimentary hills unit. While the Litho-stratigraphic on research area divided into 4 (four) units, from the oldest to the youngest stratigraphy position is sandstone unit (Tbp), claystone unit (Tbl), fine-grained sandstone unit (Tpbph), and breccia unit (Qpbx). Thus, by having the result of this research, can be useful as a reference to have further studies in this located area. 
CHARACTERIZATION OF HYDROTHERMAL ALTERATION ZONES IN PANTI GEOTHERMAL FIELD, PASAMAN DISTRICT, WEST SUMATERA PROVINCE Wildani Supriadi; Agus Didit Haryanto; Johanes Hutabarat; Robertus S. L. Simarmata; Widya Asoka
Journal of Geological Sciences and Applied Geology Vol 2, No 6 (2018): Journal of Geological Sciences and Applied Geology
Publisher : Faculty of Geological Engineering, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/gsag.v2i6.20869

Abstract

anti geothermal area is located in Pasaman Regency, West Sumatra Province. The survey areais about 200 km away from the city of Padang and about 30 km away from the capital city ofPasaman Regency, Lubuk Sikaping. The purpose of this research activity was to determine thecharacteristics of hydrothermal alteration in an observed well. The method used was petrologicalanalysis on PNT-1 well core data from the depth of 41.5 m until 533.5 m, petrography analysis of17 rock samples, and Specterra analysis based on secondary data. The alteration minerals thatappeared in the observed well were calcite, sericite, chlorite, secondary quartz, anhydrite,opaque minerals, iron oxide, clay, and epidote minerals; with alteration types in the form ofreplacement and direct depositional. Two zones were sorted based on the presence of mineralsand determination of alteration zones, namely the Smectite-Chlorite zone, and the illit-smectitechloriteand sericite zone. The smectite-chlorite zone was located at thedepthof±41-±454mandwascharacterizedbythepresenceofsmectite,ilite-smectite,calcite,andchloritealterationminerals;whichweremoredominantthanotheralterationminerals.Thiszoneaccordingtothealterationzone division comprised of argillic zone with a temperature of 140° C - 220° C. Theilite-smectite-chlorite and sericite zone was located at the depth of ± 454- ± 533 mcharacterized by the presence of illit-smectite, chlorite, sericite, calcite and quartz minerals. Thiszone, according to the alteration zone division, was comprised of argillic zone with a temperatureof 200° C - 250° C. It was concluded that the alteration rocks in PNT-1 well were estimated toserve as caprock zone of the Geothermal Panti system which formed due to the interactionbetween rocks and acidic to neutral fluid in temperatures between 140° C - 250° C.

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