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All Journal Bulletin of Scientific Contribution : Geology IJOG : Indonesian Journal on Geoscience Journal of Geoscience, Engineering, Environment, and Technology Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources) Buletin Sumber Daya Geologi Kumawula: Jurnal Pengabdian Kepada Masyarakat Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources) Journal of Geosciences and Applied Geology
Iyan Haryanto, Iyan
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Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Physics Social Sciences

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Journal : Journal of Geosciences and Applied Geology

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THE SINISTRAL STRIKE SLIP FAULT AS AMPANA BASIN CONTROLLER IN CENTRAL SULAWESI Saragih, Rahmat Yantono; Haryanto, Iyan; Sukiyah, Emi; Ilmi, Nisa Nurul; Sunardi, Edy
Journal of Geological Sciences and Applied Geology Vol 2, No 4 (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.v4i2.18289

Abstract

The presence of gas seepage born in Tanjungapi precisely in the southwestern part of the basin.This remission is supposed to be formed from main rocks of Mesozoic aged. The condition ofAmpana Basin formation cannot be separated from the effect of the relatively northeast-southeastsinistral strike-slip-fault. Based on the 43 outcrop, the main deformation product was identified asan extensional/hybrid joint with a relatively west-east fault line structure on average shear strain(η) = 58o (+) to (η) = 60o (+) and in form of the relatively northwest-southeast strike-slip-faultstructure line with the range of shear strains value between (η) = 45o (+) to (η) = 54o (+). Thekinematics movement of relatively vertical main stress gives a subsidence impact on the surfaceof Mesozoic-Paleogenic aged rock. The sedimentation process of Neogene-aged clastic, from theBongka Formation, Kingtom Formation, and Lonsio Formation ran fast and make the lowerMesozoic-Paleogene-aged rock being burdened by the upper younger rocks. The tectonicdevelopment in Ampana Basin is recorded in Lonsio Formation, Bongka Formation, and limestonein the form of structural indication and deformation showing the period of Central Miocene toHolocene tectonic with the relatively west-east direction of the main regional stress. Keywords: Ampana basin, deformation, strike slip fault, Sulawesi, Tanjungapi
Combining geological surface data and geostatistical model for Enhanced Subsurface geological model Alfadli, Muhammad Kurniawan; Natasia, Nanda; Haryanto, Iyan
Journal of Geological Sciences and Applied Geology Vol 2, No 2 (2017): 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.v2i2.13451

Abstract

AbstractThis paper emphasis the use of geological information gathered from surface mapping and subsurface data, the method that used was mainly utilizing statistical information and deterministic model interpreted. Comparison model was built to calculate the deviation between realization, the calculation was furthered can be used as a uncertainty to make a better decision to choose the best realization. Geostatistics is a branch of statistics focusing on spatial or spatiotemporal datasets. In geology, geostatistical is used for numerical calculation of subsurface approach with several data such as geophysical or geological observation. Geostatistics modelling have several parameters setup to obtain best approach model. The parameters namely lithological boundary, geological structure and random seed number. Process for modelling used 23 drilling data with various lithological type. Two type geostatistical method is applied for the data that is Indicator Kriging (IK) and Sequential Indicator Simulation (SIS) with grid size 1000x1000 and 2000x1500. Distribution of lithology begin without parameters. Resulted shown that the model not appropriate with geological surface data and mismatch lithology position. To obtained better model, several geological information is included before geostatistical calculation. From regional geology surface data is obtained geological formation within lithological information. Then, geological structure describes the geology fault and formation boundary.Keywords: Geostatistics, subsurface, enhanced model, variance, random seed number
Linking Petrography And Petrophysical Analysis In Carbonate Reservoir Characterization: Case Study In Baturaja Formation Offshore Northwest Java Natasia, Nanda; Alfadli, Muhammad Kurniawan; Arfiansyah, Kurnia; Hardiyono, Adi; Barkah, Mohamad Nursiyam; Haryanto, Iyan
Journal of Geological Sciences and Applied Geology Vol 2, No 2 (2017): 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.v2i2.13448

Abstract

AbstractLinking geological analysis with petrophysical characterization in complex carbonate reservoir is a chalangging task. Many previous researcher has proofed that depositional facies in carbonate reservoir has very little advantages in reservoir quality due to overprinted with diagenetic facies. The difficulties in characterized the carbonate may rise because one does not include some genetic, geometrical and petrophysical character of the pore space, both geometry and distribution. The aim of this study is to evaluate the reservoir rock typing in carbonate reservoir by comparing rock-fabric descriptions analyzed in thin section with laboratory measurements of porosity, permeability, capillarity, and Archie m values. Methodology employed for this study involved the examination of thin sections and the integration of routine analysis data following lucia’s pore classification scheme. The first step in characterized the petrophysical class is the determination of interparticle porosity by substracting the separate vug porosity from total porosity. The separate vug porosity is estimated in petrographic analysis in 325 thin section samples. Than estimating the value for un cored interval by determining the relationships between total porosity, separate vug porosity and sonic interval transit time. The petrographic analysis to estimating the separate vug porosity is a qualitative way, and so the value is not quantitative, but the trend is still implies the value so the relationships between porosity and sonic log can be quantified. Calibration of pore types to acoustic log response is accomplished by making a detailed log of porosity types described from thin sections and constructing Z-plots of total porosity and transit time from logs and separate-vug porosity from thin sections . The “m” value (lithology exponent or cementation factor) is different from the other terms in the Archie equation in that it is related to rock fabrics, specifically to vuggy porosity. Reservoir characterization by using this scheme has proofed that geological analysis made in detailed thin section can be a helpfull tool since the validation in tested and produced interval shows a verry good relationships. Keywords : Reservoir Characterization, Baturaja Fm., Carbonate, Petrophysics.
Study Seismotectonic Around Kalimantan Island Using Likelihood Method Haryanto, Iyan; Lamba, Lisa; Ayu, Shinta; Sunardi, Edy
Journal of Geological Sciences and Applied Geology Vol 5, No 1 (2021): Journal of Geological Science and Applied Geology
Publisher : Faculty of Geological Engineering, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/gsag.v5i1.35096

Abstract

Based on Indonesia Seismicity Map and Indonesia Seismotectonic Unit Map (Geological Research and Development Center, 2003), it can be seen that the Kalimantan Island area has the lowest earthquake vulnerability compared to other regions in Indonesia. However, in past recent years, there have been several destructive earthquakes occur in this area. As it occurred on June 5, 2015, in Ranau area with a magnitude of 6, on December 21, 2015, in Tarakan area with a magnitude of 6.1, on June 24, 2016, with a magnitude of 5.1, on 25 February 2015 with a magnitude of 5.7 in the northeast of Tarakan and 12 July 2018 in Katingan with a magnitude of 4.2. This indicates that the possibility of a potential earthquake in the Kalimantan area can still occur. For this reason, it is necessary to identify seismotectonics and the recurrence period to ensure the potential for earthquake hazards on the Island of Kalimantan. The likelihood method is used to calculate those parameters with earthquake data from 2009-2020 with a magnitude ≥ 5 and a depth of 0 – 350 Km sourced from the Meteorology, Climatology and Geophysics Agency (BMKG). Based on the calculation results, it is obtained that the value of a is 2.71222 and the value of b is 0.64077. In general, it can be concluded that the seismicity level of Kalimantan Island is quite low.Keyword: Seismotectonic, Kalimantan Island, Seismicity index, likelihood method
THE LEVELS OF LEMBANG FAULT ACTIVITY BASED ON GEOMORPHIC INDEXES ON AROUND THE CIKAPUNDUNG WATERSHED, WEST JAVA Syalsabilla, Lola Lintang; Haryanto, Iyan; Sukiyah, Emi
Journal of Geological Sciences and Applied Geology Vol 4, No 1 (2020): Journal of Geological Science and Applied Geology
Publisher : Faculty of Geological Engineering, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/gsag.v4i1.28518

Abstract

Lembang Fault is a fault in the highlands of Bandung, which has an East-West direction with a length of about 29 km. This fault greatly affects the landscape around the Cikapundung watershed, especially in the upstream. An analysis performed using the geomorphic index; Basin Shape, Mount Front Sinuosity, Asymmetry Factor, T – Index, Ratio of Valley Floor Width to Valley Height, and Relative Tectonic Activity. Based on the analysis using methods above, the level of tectonic in the Cikapundung watershed ranges from active to low. The presence of Lembang fault affects landscape, forming zone that borders the Bandung highlands and the Subang area in the north.
STRUCTURAL GEOLOGY AND MAGMATISM/VOLCANISM ACTIVITY TOWARD GEOMORPHOLOGY IN BANDUNG BARAT-CIRANJANG, WEST JAVA Haryanto, Iyan; Ilmi, Nisa Nurul; Hutabarat, Johanes; Natasia, Nanda; Sunardi, Edy
Journal of Geological Sciences and Applied Geology Vol 3, No 3 (2019): 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.v3i3.25947

Abstract

Geomorphology along Ciranjang to Bandung Barat is dominated by structural hills while others are related to the magmatism/ volcanism activity. The others morphological features are plain land which belong to Ciranjang and Bandung depression. In interpreting geological structures, topography map and DEM were used together with field data particularly the landscape faulting indication and flow pattern. The compiled data of morphology, stratigraphy and landscape in the study area showed that the geomorphology of the area could be differ into several unit which are structural hill, non-structural hill, and plain morphology units. Sedimentary structural hill unit were develop in Rajamandala hills starting from the Cianjur-Bandung border, Solitary hills geomorphological unit developed in Cililin area, and the developed plain unit developed in Ciranjang and Cililin area
MOUNTAIN-FRONT SINUOSITY AND ASYMMETRICAL FACTOR OF LELES-GARUT INTRA-ARC BASIN, WEST JAVA Haryanto, Iyan; Setiadi, Djadjang Jedi; Alam, Syaiful; Ilmi, Nisa Nurul; Sunardi, Edy
Journal of Geological Sciences and Applied Geology Vol 2, No 5 (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.v2i5.20230

Abstract

The Leles-Garut Basin, with an elevation ranges between 650 and 725 above mean sea level, is a Quaternary topographic basin area situated in the east-trending volcanic arc of West Java. In contrast to the adjacent Bandung Basin, the nature of the basin bounding area of the Leles-Garut Basin is not clearly defined. The presence of volcanic chain and structural lineament exhibits the difference in morphological features. A quantification of morphological indices was chosen to redefine an active tectonic involvement in surrounding basin border. Mountain-front sinuosity indices range from 1.1 to 3.9 and basin asymmetrical factor suggests a wide range of the effects of active tectonic even a little tilting. The study unveil that the basin bounding is not only volcano-bounded but also fault-bounded.
Application of Fault Fracture Density in Determination of Zones with High Permeability Levels on Geothermal Surface Manifestations in the Sukarame Region, Sukabumi Regency, West Java Province Ramadhan, Galih Hadisurya; Haryanto, Agus Didit; Haryanto, Iyan; Hadi, Mochamad Nur; Mustofa, Santia Ardi
Journal of Geological Sciences and Applied Geology Vol 5, No 1 (2021): Journal of Geological Science and Applied Geology
Publisher : Faculty of Geological Engineering, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/gsag.v5i1.34902

Abstract

Indonesia is a country with quite large geothermal potential with a volcanic distribution that extends from Sabang to Merauke. The total potential for developing geothermal energy in Indonesia can reach 28,579 MWE if it is developed properly. This study was conducted for determining a permeable zone at the research location which is in Sukarame Village that can be related to the emergence of hot springs as a geothermal surface manifestations, besides that this research can also provide an overview of the general direction of geological structures that may develop in the research area. The method used in this study is Fault fracture density analysis which can determine the zone with a high level of permeability based on the lineament pattern drawn from remote sensing interpretation. The main data source for interpreting lineament pattern analysis is DEMNAS imagery which built from 3 satellites imagery including IFSAR, TERRASAR-X and ALOS PALSAR. The lineament pattern that have been analyzed then processed computationally into rose a diagram to get the general direction of structural geology which may develop. The total length of the lineament pattern is also calculated to obtain the lineament density value that leads to the determination of the permeable zone. The lineament pattern in the research area has a general direction of northeast-southwest, while the lineament density value in the study area has a value range of 4534.714078 – 9084.119758 m/km2. Areas with a high level of permeability coincide with the point of hot springs as a manifestation of the geothermal surface.
MINERALIZATION CHARACTERISTICS OF KIARAPAYUNG, CIBALIUNG DISTRICT, PANDEGLANG, BANTEN Widyariestha, Mira; Rosana, Mega Fatimah; Haryanto, Iyan; Kurniawan, Andi
Journal of Geological Sciences and Applied Geology Vol 3, No 1 (2019): 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.v3i1.21577

Abstract

PT Cibaliung Tbk is one of active underground gold mining in West Java. The mineralization type is Au-Ag adularia-sericite low sulphidation (Angeles et al, 2002). Study area is located southeastward from main veins of Cibaliung, administratively in Kiarapayung village, Cibaliung District, Pandeglang, Banten. From previous study it is known that acid alteration typical of high sulphidation deposit also occurred in study area. This research aim to observe the characteristics of mineralization in study area, comprising of its occurrence, trend, and ore minerals present. This research use field observation and ore microscopy as main method to identify mineralization characteristics. Mineralization occurred in the field as quartz and silica veins with various textures; vuggy quartz; and silica-pyrite replacement bodies. Most veins have NW-SE trend, similar to trends of major faults in research area. Vuggy quartz and replacement zones distribution also found restricted to geological structures. Pyrite distribution in wallrock also showed trend that associated with geological structures. Textural observation with binocular microscope in veins and replacement zone showed rock brecciation process before ore-bearing alteration. Ore minerals present are pyrite and chalcopyrite with minor galena and chalcocite. Mineralization characteristics indicate there is low sulphidation and high sulphidation type mineralization in study area. Both mineralization are strongly influenced by geological structures.Keywords: mineralization, veins, vuggy quartz, texture, structural control.
Evaluation of Acid-Base Accounting to Predict the Acid Water of Overburden in Coal Mines in Horna Areas, West Papua Province, Indonesia Hamdani, Ahmad Helman; Hutabarat, Johanes; Haryanto, Iyan; Ilmi, Nisa Nurul
Journal of Geological Sciences and Applied Geology Vol 2, No 3 (2017): 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.v2i3.15618

Abstract

Acid-Base Accounting (ABA) is an analytical procedure to measure the balance between the acid neutralization and acid generation properties of any geologic material. ABA is considered tools  to predict post-mining water. Overburden samples were collected from the coalfields of Horna coalmines. Maximum potential acidity (MPA), acid neutralizing capacity (ANC), acid net neutralization potential (ANG), Net Acid Producing Potential  (NAPP), net acid generation (NAG), and ANC/MPA ratios were determined for each site based on ABA.  Most of the sample from R1, R4, R-13, and R14 showing the pH of net acid generation of overburden ranges from 3.2 – 4.47 and positively acid net neutralization potential (be classified as the PAF-LC (Low Capacity Potential Acid NAPP) varies from 2.07 – 21.27 2.4 kg/t H2SO4   indicate that the samples are classified as the PAF-LC (Low Capacity Potential Acid Former (LC-PAF) to the PAF-MC (Moderately Capacity Potential Acid Former (MC-PAF). Other samples from R13 (four samples) has negatively NAPP and pHNAG between 6,21 – 7,10, therefore should be classified as the NAF; two samples from R13 indicated the uncertainty (UC) due to high pHNGA (6,82-7,15).
Co-Authors Abdul Bari Abdurrokhim ⠀ Abdurrokhim, . Adhiperdana, Billy G. Adhiperdhana, Billy Gumelar Adi Hardiyono, Adi Adjat Sudrajat Agus Didit Haryanto -, Agus Didit Haryanto Ahmad Helman Hamdani, Ahmad Helman Ali Djamhuri Andi Agus Nur, Andi Agus Andi Kurniawan Andriana, Yoga Arifin, Alvin Adam Ayu, Shinta B.Sendjadja, Yoga Barkah, Mohamad Nursiyam David Victor Mamengko Djadjang Jedi Setiadi Dudi Nasrudin Usman Edi Tri Haryanto, Edi Tri Edy Sunardi Eko Budi Lelono, Eko Budi Emi Sukiyah Faisal Helmi Fatimah Rosana, Mega Fauziely, Lili Febri Hirnawan Fenry Simorangkir, Fenry Hadi, Mochamad Nur Hafiz, Surya Darma Hendarmawan, . Hermes Panggabean Ikramina, Alma Irdanto Saputra, Irdanto Ismawan Ismawan, Ismawan Johanes Hutabarat Kurnia Arfiansyah, Kurnia Lamba, Lisa Mawardi, Sonny Mega Fatimah Rosana Muhammad Kurniawan Alfadli Mustofa, Santia Ardi Musu, Juwita Trivianty Nana Sulaksana Nanda Natasia Nisa Nurul Ilmi Nurahmah, Siti Chusnul Chatimah Nurdradjat -, Nurdradjat Nurdrajat Nurdrajat Panuju Panuju Pradnya Paramarta Raditya Rendra Raden Irvan Sophian, Raden Irvan Ramadhan, Galih Hadisurya Saputro, Anisa Ayu Saragih, Rahmat Yantono Sulastri, Murni Syaiful Alam Syalsabilla, Lola Lintang Wicaksono, Danny Widyariestha, Mira Wiguna, Purwa Yarra Sutadiwiria Yeftamikha, . Yeftamikha, Yeftamikha Yoga Andriana Sendjaja, Yoga Andriana Yusi Firmansyah, Yusi Yuyun Yuniardi Zufialdi Zakaria, Zufialdi