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All Journal Indonesian Journal of Geography Bulletin of Scientific Contribution : Geology IJOG : Indonesian Journal on Geoscience BULLETIN OF THE MARINE GEOLOGY Indonesian Journal on Geoscience Indonesian Journal on Geoscience Journal of Geosciences and Applied Geology

Edy Sunardi

Fakultas Teknik Geologi Universitas Padjadjaran

Author-ID : 568186

Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Engineering Environmental Science

Published : 35 Documents Claim Missing Document

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Origin of Oil Seeps in West Sulawesi Onshore, Indonesia: Geochemical Constraints and Paleogeographic Reconstruction of the Source Facies Sutadiwiria, Yarra; Yeftamikha, .; Hamdani, Ahmad Helman; Andriana, Yoga; Haryanto, Iyan; Sunardi, Edy
Journal of Geological Sciences and Applied Geology Vol 2, No 1 (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.v2i1.13420

ABSTRACTNumerous oil and gas seeps occur at onshore West and South Sulawesi. These may indicate the presence of active petroleum system in subsurface hence the area is worthy for further exploration. No discovery well so far in this area. Therefore, the seeps provide significant data to build integrated petroleum system analysis.A number of geochemical analysis were conducted on the oil seeps and rock samples from outcrop and well cuttings to reveal the source rocks that generate the oils. Triterpane m/z 191 shows low content of tricyclic terpane, low norhopane to hopane, and abundant oleanane. Sterane m/z 217 and bicyclic alkane m/z 123 show dominant C29 sterane and bicadinane. These biomarkers indicate that the source of oils are coals and/or coaly shales deposited in fluvio-deltaic setting. Contribution from marine input is shown in Karama region to the south.Based on stratigraphic setting of West and South Sulawesi, the best candidate for the source of oil seeps is Eocene coals or coaly shales of Toraja or Kalumpang Formation. The Eocene coal samples have been characterized and show similar GC alkane distribution with the oil seeps. Contribution from marine facies, which may age-equivalent to these coals are shown in Karama region.Aromatic methyl phenanthrene m/z 178 and m/z 192 were also analyzed to know their maturities and they were generated at maturity level equivalent with Ro 0.8-1.0 %.Based on geochemical constraints and geologic data, a paleogeographic setting of Eocene Toraja/Kalumpang Formation was built to know better about the paleo-source facies of the oils and its geochemical characteristics. Keywords: Biomarker, coaly shales, Toraja/Kalumpang Formation

DISTRIBUTION PATTERN DIFFERENCES OF KALIWANGU FORMATION IN UJUNGJAYA AND PASIR MALATI, SUMEDANG, WEST JAVA Ilmi, Nisa Nurul; Haryanto, Iyan; Abdurrokhim, Abdurrokhim; Adhiperdhana, Billy Gumelar; Helmi, Faisal; Hutabarat, Johanes; 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.v3i3.26225

The distribution of Kaliwangu Formation sediment in West Java generally follows the structure of Java fold thrust belt, which directed west-east. The Java fold thurst belt was efectively formed during Pleio-Pleistocene tectonics events, in which all of the Cenozoic sediment were deformed by compression stress in north-south direction. In Ujungjaya area, Kaliwangu Formation has northwest-southeast direction, while in Pasir Malati, the formation was arced relatively in north-south direction. Kaliwangu Formation distribution in Ujungjaya was influenced by the massive compression tectonics occurred in Java. This tectonic event were occurred during Pleio-Pleistocene which resulted in Java thrust fold structure pattern including Baribis Faults. Unlike in Ujungjaya, the distribution of Kaliwangu Formation in Pasir Malati was arced in north-south direction which caused by its fold structure. There is no indication of regional fault in Pasir Malati area although a lot of fault structure was found as a part of regional structure.

THE PRESENCE OF REVERSE SLIP FAULT AND ITS IMPLICATION TO GEOMORPHOLOGY DEVELOPMENT AND LITOLOGY DISTRIBUTION AT CIKASO REGION, CIAMIS DISTRICT, WEST JAVA. Haryanto, Iyan; Saputro, Anisa Ayu; Arifin, Alvin Adam; Ilmi, Nisa Nurul; Sunardi, Edy
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

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.

Thermogenic Hydrocarbon Potential on Two Drop Cores Samples from The Surface Geochemical Exploration Program in The Offshores Area of Yamdena Basin, Tanimbar Islands Ilmi, Nisa Nurul; Sunardi, Edy
Journal of Geological Sciences and Applied Geology Vol 8, No 2 (2025): 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.v8i2.61562

Seepage of hydrocarbons in near-surface sediments can be categorized into micro and macro seepage, controlled by complex geological, geochemical, and biological processes. Surface geochemical exploration programs have been widely employed to detect and analyze geochemical anomalies on the Earth's surface, which could indicate the presence of subsurface mineral or hydrocarbon deposits. This study aims to characterize two drop core samples extracted from the Yamdena Basin through organic geochemical and isotopic analysis to assess the potential for thermogenic hydrocarbons in the region. A quantitative approach was adopted, utilizing geochemical data, including stable carbon isotope analysis and organic geochemical evaluation through Gas Chromatography (GC) and Gas Chromatography-Mass Spectrometry (GC-MS). The samples analyzed consisted of two piston cores collected during a surface geochemical program conducted by TDI-Brooks International, Inc. This study relies on data from a previous TDI-Brooks International, Inc. survey, with data licensed from TGN-NOPEC Geophysical Company through the Migas Data Repository (MDR) – Pusdatin, focusing on the organic geochemical characterization of drop core samples from offshore Tanimbar Islands. The results indicate that Sample#1 and Sample#2 samples were deposited in a marine setting with varying terrestrial input and exhibited a low maturity level. Geochemical signatures reveal the presence of immature land-plant lipids, suggesting a low potential for thermogenic hydrocarbon generation. The findings highlight the value of surface geochemical exploration programs in mapping hydrocarbon prospects in frontier areas. Furthermore, detailed geochemical analyses can provide insights into the sources and potential of hydrocarbons, aiding in future exploration strategies.

TEKTONIK SESAR CIMANDIRI, PROVINSI JAWA BARAT Haryanto, Iyan; Hutabarat, Johanes; Sudrajat, Adjat; Ilmi, Nisa Nurul; Sunardi, Edy
Bulletin of Scientific Contribution Vol 15, No 3 (2017): Bulletin of Scientific Contribution:GEOLOGY
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

ABSTRACTCimandiri fault formed during stage II orogenesis is the oldest fault at the end of the middle Eocene. The Cimandiri fault is the active fault that developed a paleo high and uplifted the Ciletuh Formation within front arc basin. The stage III orogenesis at the Late Eocene indicated by regional compression in the Java that affected to reactivation fault. This fault known to be the same as the Baribis thrust fault. Finally, the compression tectonic decreased that it created the normal fault on Cimandiri thrust-fold. Therefore, we can define the Cimandiri fault into two regional fault patterns. The first pattern, the thrust fault that indicated by high bedding inclined. The second pattern, the next pattern is the normal fault that revealed by fault scarps inclination more than 50o or even vertical in some locations. Keywords: Cimandiri fault, front arc basin, Ciletuh valley, Cimandiri Valley. ABSTRACKSesar Cimandiri merupakan sesar tua yang terbentuk selama berlangsungnya orogenesa tahap II, yaitu pada waktu Akhir Eosen Tengah. Pada saat itu batuan sedimen Formasi Ciletuh berumur Eosen Tengah yang terbentuk di dalam Cekungan Depan Busur sudah terangkat ke permukaan. Sesar ini terus aktif hingga menyebabkan terbentuknya tinggian purba (paleo-hight) antara Lembah Ciletuh dan Lembah Cimandiri. Pada Akhir Tersier, tektonik kompresi kembali terjadi, menyebabkan untuk ketiga kalinya sesar Cimandiri teraktifkan kembali sebagai sesar naik. Peristiwa ini disimpulkan sebagai orogenesa ke III di Pulau Jawa. Salah satu struktur sesar regional yang terbentuk pada saat itu adalah Sesar Baribis. Setelah tektonik kompresi berkurang terjadi kesetimbangan menyebabkan terbentuknya sesar normal pada jalur lipatan anjakan Cimandiri. Oleh karena itu, Sesar Cimandiri terdiri atas dua sesar regional yang pertama sebagai sesar naik yang dicirikan oleh deformasi lipatan batuannya yang umumnya tegak, dan sebagai sesar normal yang dicirikan dengan terbentuknya gawir sesar dengan kemiringan di atas 50° bahkan di beberapa lokasi mendekati vertical. Kata Kunci: Sesar Cimandiri, Cekungan Depan Busur, Lembah Ciletuh, Lembah Cimandiri.

STRUKTUR LIPATAN ANJAKAN DAERAH WALAT, SUKABUMI, JAWA BARAT -, Iyan Haryanto; -, Edy Sunardi; -, Adjat Sudradjat; -, Suparka
Bulletin of Scientific Contribution Vol 9, No 1 (2011): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Walat hills in the area of Sukabumi, has a pattern of east-west trending ridge. Hills line orientation is controlled by the structure of fold with is followed by formation of reverse fault. Both of geological structures is formed on the same tectonic period, on Plio-Plistocene. Position of the axis of the fold and reverse fault parallel relative to each other, based on the tectonic formation occurs in the same period, it can be classified as a pattern of thrust folds structure. Of some reverse faults that developed in Walat Area, the reverse fault whose position to northward is major reverse fault, so that by referring to the model structure of Boyer and Elliote (1982), it can be classified as a leading thrust system. This structural pattern is controling topographical differences of the hills with plain morphology in northern.

KONTROL STRUKTUR TERHADAP PENYEBARAN BATUAN VOLKANIK KUARTER DAN GUNUNGAPI AKTIF DI JAWA BARAT Sunardi, Edy
Bulletin of Scientific Contribution Vol 12, No 3 (2014): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Distribution of Quaternary volcanic rocks and the position of the active volcanoes are relation with subduction activity. In the surface appearance of volcanic rocks and active volcanoes is controlled by fault structure. The purpose of this study was to determine the pattern of distribution of fault structure underlying the Quaternary volcanic rocks. The methods used by Landsat imagery analysis and delineate the age distribution of volcanic rocks. Since Late Tertiary to Quaternary fault structures have been formed either as a result of reactivation of old faults or as a new fault structures formed by tectonic younger. Based on the age of volcanic rocks and underlying fault pattern can be concluded that the tectonic activity and magmatism / volcanism never stops.

REAKTIVASI SESAR TUA DAN PENGARUHNYA TERHADAP PEMBENTUKAN STRUKTUR GEOLOGI DAN CEKUNGAN KUARTER DI DAERAH BANDUNG-GARUT -, Edy Sunardi
Bulletin of Scientific Contribution Vol 12, No 2 (2014): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

The geological structure of faults on the pre-Tertiary basement rocks in West Java is the result of the activity of plate collision in the Cretaceous and Tertiary Age. The NE-SW direction of structural pattern is the pattern of major fault related to Cretaceous subduction, while other direction is related to Tertiary. The reactivation fault turned out to continue in Late Tertiary to Quaternary period. Baribis Fault, Cimandiri Fault, and Citanduy Fault which are formed in the Late Tertiary, faulted also Quaternary volcanic rocks.Some Quaternary structures forming sub-basin and heights, which shows genetically similar with its basement rocks. From subsurface geological data, the high and low patterns show similarity to the surface condition, such as under Bandung and Garut depressions, where horst and graben are found. Based on this finding, it can be concluded that there is fault reactivation from basement rocks to the surface.

KARAKTERISTIK GEOLOGI DAERAH GUNUNGAN LUMPUR CIUYAH -, Faizal Muhamadsyah; -, Edy Sunardi; -, Vijaya Isnaniawardhani
Bulletin of Scientific Contribution Vol 10, No 2 (2012): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

The mud flow which identified in Ciuyah area is located in Ciniru village, District Ciniru, Kuningan regency, West Java. Study of morphometry through the deployment of slope classes have described the class as a concentric distribution with location of Ciuyah mud flow in the middle. Annular’s drainage pattern at the regional scale is reflected of the circular in the Ciniru area, at around of site Ciniru extrusion Ciuyah mud mound. Circular patterns of distribution shown by the slope zone, and annular flow patterns in the river a more regional scale is suggest updoming beneath the surface. Interpreted that the migration channel and the possible fluid circulation is controlled by faults that developed in the study area. Structural geology are factors that contribute to the release or migration of fluid to the surface, and provide an outlet for material and fluid under conditions of excessive stress, clayey material which forming of bedrock formations is elusiation experience process, and eventually formed mountains of mud intrusion on the surface

STRATIGRAPHY REVIEW OF KUNINGAN AREA IN RELATION TO THE PETROLEUM POTENTIAL -, Edy Sunardi
Bulletin of Scientific Contribution Vol 9, No 3 (2011): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

The West Java area is part of back arc basin comprising a number of North-South oriented half graben and sub-basin situated at the southernmost edge of the Sunda Platform. The area chosen for this study is called as Kuningan Area, located at the Bogor Trough, which has a complete sequence of rifting events. However, limited wells are available; therefore, a basin fill history could not be identified.It is predicted that this area has a hydrocarbon potential. Play concepts in the Northwest Java Basin, especially focused on syn-rift and post-rift sediments, whilst in the past they concentrated on carbonate build-ups on structural highs and the Jatibarang volcanics.In the offshore of NW Java Basin, to the north of this area, the proven oil and gas province are scattered in the several sub-basins such as Northwest Java Basin and Arjuna Basin. A number of different plays as shown in structural cross section in W-NE direction of the West Java Basin show the presence of extensive block faulting in the basement forming graben-like structures. The deposition of carbonate build-up is clearly indicated as Baturaja Formation in the lower part and Parigi Formation in the upper part. It is hoped that this configuration extends to the Kuningan Area which is mostly covered by thick Quaternary volcanic rocks.

Co-Authors Abdurrokhim ⠀ Abdurrokhim, . Adhiperdana, Billy G. Adhiperdhana, Billy Gumelar Adjat Sudradjat -, Adjat Sudradjat Adjat Sudrajat Adycipta Anis Prawoto, Adycipta Anis Agung Mulyo Ahmad Helman Hamdani, Ahmad Helman Andriana, Yoga Arifin, Alvin Adam Ayu, Shinta Billy G Adhiperdana Billy G. Adhiperdana Carrisa, Dea Darwansyah, Fiqry Djadjang Jedi Setiadi Dwandari Ralanarko Edison Gunawan Sirodj Emi Sukiyah Eric Wijaya Faisal Helmi Faisal Helmi -, Faisal Helmi Faizal Muhamadsyah -, Faizal Muhamadsyah Fauziely, Lili Ginting, Agus Santa Haqiqie, Fauzan Aditya Hendarmawan, . Heni Pujiastuti Herida, Shaskia Ildrem Syafri Ismawan - Iyan Haryanto Iyan Haryanto -, Iyan Haryanto Iyan Haryanto, Iyan Johanes Hutabarat KAMILA, PUTRI Lamba, Lisa Muhammad Irwansyah, Muhammad Nanda Natasia Nisa Nurul Ilmi Nurdrajat Nurdrajat Oeke Sobarin -, Oeke Sobarin Pranopto, Andri Pranowo Nugroho Pusparini, Widyatri Saputro, Anisa Ayu Saragih, Rahmat Yantono Sendjadja, Yoga Andriana Sentani, Eddy Arus Suparka -, Suparka Suryanegara, Yoga SYABAN, FARHAN TAUFIK Syaiful Alam Vijaya Isnaniawardhani Wardhani, Vijaya Isnania Yarra Sutadiwiria Yeftamikha, . Yoga Andriana Sendjaja, Yoga Andriana Yunita Rossa Indah Putri, Yunita Rossa Yusi Firmansyah, Yusi

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