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All Journal Indonesian Journal of Geography Bulletin of Scientific Contribution : Geology IJOG : Indonesian Journal on Geoscience Journal of Mathematical and Fundamental Sciences BULLETIN OF THE MARINE GEOLOGY Indonesian Journal on Geoscience Indonesian Journal on Geoscience Berita Sedimentologi Journal of Business, Social and Technology Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources) Journal of Geosciences and Applied Geology

Edy Sunardi

Fakultas Teknik Geologi, Universitas Padjadjaran

Author-ID : 568186

Astronomy Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Economics, Econometrics & Finance Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mathematics Physics Social Sciences

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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.

Karakteristik dan Lingkungan Pengendapan Batubara Eosen Formasi Batu Ayau Cekungan Kutei Atas Bagian Barat Di Daerah Murung Raya Dan Sekitarnya, Kalimantan Tengah Suryanegara, Yoga; Wardhani, Vijaya Isnania; Sunardi, Edy
Bulletin of Scientific Contribution Vol 17, No 1 (2019): Bulletin of Scientific Contribution GEOLOGY
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Endapan batubara di daerah penelitian termasuk ke dalam Formasi Batu Ayau yang merupakan bagian dari Kelompok Tanjung pada Cekungan Kutei Atas bagian Barat. Diidentifikasi terdapat sebanyak 22 lapisan batubara dimana 4 (empat) lapisan batubara merupakan seam utama yaitu (dari bawah ke atas): seam B (1.05m), C (1.19m), D (1.43m) dan J (1.44m). Deskripsi megaskopis lapisan batubara: berwarna hitam yang didominasi pita terang (bright) – sangat terang (very bright), pecah blocky – concoidal, dan abundant cleat. Berdasarkan analisa maseral, batubara Eosen ini dapat diklasifikasikan sebagai tipe Vitrinite A. Rank batubara di daerah penelitian adalah low – medium volatile bituminous – semi antrasite (Rv: 1.75 – 2.0 dengan VM-daf: 13.78% – 28.14%) dan memiliki kualitas batubara metalurgi dengan CSN 8.5. Fasies sedimen pembawa batubara berupa perselingan fasies batupasir dengan batulanau dengan sisipan lapisan batubara. Fasies batulanau sisipan batubara diinterpretasikan merupakan endapan rawa yang dipengaruhi oleh aktivitas limpas banjir sedangkan fasies batupasir merupakan tipe endapan channel dan point bar. Kedua fasies sedimen ini diendapkan pada lingkungan fresh water atau sistem lingkungan pengendapan fluvial dengan pola meandering dan/atau braided system yang dipengaruhi oleh floodplain. Lingkungan pengendapan ini terbagi menjadi empat siklus sekuen lingkungan pengendapan fluvial. Berdasarkan analisa kualitas conto diketahui bahwa proses coalification batubara secara vertikal dikontrol oleh proses burial depth dan secara lateral dikontrol oleh adanya struktur geologi yang diidentifikasi sebagai bagian akhir dari Adang Flexure serta oleh adanya intrusi batuan beku Sintang yang tidak tersingkap ke permukaan. Kata kunci: Batubara Eosen, Type, Rank, Batubara Metalurgi, Fluvial System, Coalification.

POTENSI HIDROKARBON FORMASI AIR BENAKAT, LAPANGAN ‘CA’, CEKUNGAN SUMATERA SELATAN Prawoto, Adycipta Anis; Firmansyah, Yusi; -, Nurdrajat; Sunardi, Edy
Bulletin of Scientific Contribution Vol 13, No 1 (2015): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Field ‘CA’ located in the South Sumatra Basin with an area of 6433 Km2. This study aimed to evaluate the hydrocarbon potential of Air Benakat Formation. Based on the results of the petrophysical analysis from well HA, BA, PA, RI and SE show the results are : Vsh cut off 0.34, Phie cut off 0.136 and SW cut off 0.59. Determination of reservoir netpay performed on HA well, that have thick of netpay 14.638 meters. The results of picking seismic horizon are time and depth structure maps of Air Benakat Formation and Gumai Formation. The map was made for determining lead in the research area. Calculation of estimated hydrocarbon reserves in the research area shows the value of OOIP is 345 MMBO.

TEKTONIK DAERAH MUARA TEBO PROPINSI JAMBI -, Iyan Haryanto; -, Ismawan; -, Faisal Helmi; -, Edy Sunardi; -, Oeke Sobarin; Indah Putri, Yunita Rossa
Bulletin of Scientific Contribution Vol 6, No 1 (2008): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Geological structure of Muara Tebo area was influenced by subduction between Eurasian and India-Australian Plates. Regional tectonic of this area dominantly yield an amount of fault structure with orientation Northwest-Southeast.Structural pattern of study area dominated by dextral strike-slip and thrust fault, with orientation Northwest-Southeast. The dextral strike-slip fault represent the first structure formed (Early Tertiary) which influenced by transtensional stress. Further, on Neogene Tectonic period the structures influenced by tranversional stress system which affecting inversion. This late tectonic yield an amount of thrust fault.

PENGARUH SESAR CIMANDIRI TERHADAP MORFOLOGI DAERAH PADALARANG Haryanto, Iyan; Sunardi, Edy
Bulletin of Scientific Contribution Vol 12, No 2 (2014): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/bsc.v12i2.8367

Cimandiri Fault is a regional fault that stretching from Pelabuhanratu (Sukabumi) to end up in the complex area of Mt. Tangkubanprahu – Mt. Burangrang (Subang - Northward of Bandung). Regional fault has been widely studied, but there are differences of opinion, especially regarding the type of shift.This study aimed to examine all aspects relating to Cimandiri Fault, especially along the segment Tagokapu-Cibogo (Padalarang-Citatah), so that can be known about the type of the fault. Steps and methods of research, among others, to analyze the landscape through satelite image, make observations, descriptions and measurement of geological structure elements, data processing by program using "dip" and "Paleostress" softwares. Cimandiri fault lines along the segment Tagokapu-Cibogo, can be recognized from various aspects, among others, from the aspect of geomorphology characterized by differences in the shape and elevation of the hills; from stratigraphical aspects there are contact between rock formations of different ages; from fold structure aspects there are found standing upright rock layers; and from the aspect of fault outcrop, there were indications that the fault is generally associated with horizontal fault. From the results of the analysis showed that the lineament of Cimandiri Fault along Tagokapu-Cibogo segment, controlled by a reverse fault and normal faults that formed in different tectonic period.

VULKANISME DAN KARBONAT UMUR MIOSEN DI DAERAH BANJAR-PANGANDARAN, JAWA BARAT Haryanto, Iyan; Ilmi, Nisa Nurul; Adhiperdana, Billy G.; Fauziely, Lili; Sunardi, Edy
Bulletin of Scientific Contribution Vol 16, No 2 (2018): Bulletin of Scientific Contribution GEOLOGY
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Daerah Banjar-Pangandaran merupakan bagian dari Zona Pegunungan Selatan yang sebagian besar disusun batuan volkaniklastik Formasi Jampang. Batuannya didominasi oleh breksi, tuf dan batupasir kasar. Seluruhnya membentuk morfologi perbukitan sedang hingga terjal, dengan punggungan berarah barat-timur. Di bagian tepi dari lereng perbukitannya, tersingkap batugamping yang berumur lebih muda, yaitu Formasi Klapangunggal dan Formasi Pamutuan. Di lapangan tidak ditemukan kontak litologi, namun berdasarkan pada umur batuan yang menerus, serta kedudukannya di lapangan diduga keduanya memiliki hubungan stratigrafi yang selaras. Penelitian ini masih dalam tahap awal yang dilakukan hanya berdasarkan pada data singkapan. Analisis dilakukan dengan melakukan rekontruksi pola struktur (pola jurus), serta dipandu dengan interpretasi geologi melalui DEM.Hasil sementara menunjukan bahwa pertumbuhan carbonate mulai berlangsung ketika aktivitas volkanisma pawa waktu Miosen Bawah Berakhir. Pada saat itu di antara tinggian volkanik, memiliki lingkungan marin yang tenang dan dangkal, sehingga memungkinkan terbentuknya pertumbuhan carbonate. Di lihat dari peyebarannya, carbonate disimpulkan sebagai barrier kecil dan lainnya sebagai pitch reef.

TEKTONIK DAN ASPEK KEBENCANAAN DI PULAU SUMATRA Haryanto, Iyan; Irawati, .; Helmi, Faisal; Adhiperdana, Billy G.; Abdurrokhim, .; Natasia, Nanda; Alfadli, Muhammad Kurniawan; Sunardi, Edy
Bulletin of Scientific Contribution Vol 23, No 3 (2025): Bulletin of Scientific Contribution : GEOLOGY
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/bsc.v23i3.68147

ABSTRAKStruktur geologi di Pulau Sumatra dilatarbelakangi oleh tumbukan lempeng miring antara Lempeng India-Australia dengan Lempeng Eurasia. Peristiwa tektonik ini menyebabkan terjadinya tegasan strike slip sehingga pola struktur yang terbentuk di pulau ini didominasi oleh sesar mendatar dan dua diantaranya bersifat regional yaitu Sesar Sumatra dan Sesar Mentawai. Berdasarkan latar belakang tektonik di atas, maka setiap struktur sesar yang memiliki pola yang sama dengan kedua sesar regional di atas, selalu disimpulkan sebagai sesar mendatar juga.Data lapangan menunjukan tidak semua struktur sesar naik berada di dalam zona transpresional dari mendatar regional yang melengkung (bend fault) atau bergeser (steep over) seperti yang terjadi di daerah Bukit Garba, yaitu sesar-sesar naiknya terbentuk langsung oleh tektonik kompresi. Tektonik kompresi juga terjadi di daerah tinggian seperti prisma akresi dan jalur orogenesa yang pembentukannya memerlukan gaya yang besar dan bersifat regional. Secara genetik peristiwa tektonik harus dilatarbelakangi oleh sistem tegasan kompresi dibandingkan strike slip. Namun demikian karena latar belakang tumbukan lempengnya bersifat miring, maka sebagian dari sesar-sesar naik di Pulau Sumatra bersifat oblik yaitu naik mendatar.Kata Kunci: bend fault, orogenesa, pop-up, strike slip, steep over, subduksi miring. ABSTRACTThe geological structure of Sumatra Island is constructed by the oblique collision of the Indo-Australian Plate with the Eurasian Plate. This tectonic occurrence induces strike-slip stresses, resulting in a structural pattern predominantly characterised by strike-slip faults, among which two are regional: the Sumatra Fault and the Mentawai Fault. Based on the aforementioned tectonic context, any fault structure exhibiting a similar pattern to these two regional faults is typically classified as a strike-slip fault.Field observations reveal that not all thrust fault structures are situated within transpressional zones of regionally curved (bend faults) or steepened (steep-over) faults, as observed in the Garba Hills area. These thrust faults are directly formed by compressional tectonics. Compressional tectonics are also active in areas of high elevation, such as accretionary prisms and orogenic zones, whose formation necessitates substantial forces and is of regional extent. Tectonic events, in a genetic sense, are primarily driven by a compressional stress system rather than strike-slip mechanisms. Nevertheless, due to the inclined nature of the plate collision background, some thrust faults on Sumatra Island are oblique, rising horizontally.Keywords: bend fault, orogenesis, pop-up, strike slip, steep over, oblique subduction.

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

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