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All Journal Bulletin of Scientific Contribution : Geology Buletin Sumber Daya Geologi Journal of Geosciences and Applied Geology
Adi Hardiyono
Fakultas Teknik Geologi Universitas Padjadjaran
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Energy Engineering Environmental Science

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SANDSTONE QUALITY ASSESSMENT FROM CORE DATA OF SANTUL FORMATION, TARAKAN BASIN BASED ON PETROGRAPHY AND ROUTINE CORE ANALYSIS Yuniardi, Yuyun; Muljana, Budi; Mardiana, Undang; Hardiyono, Adi; Nur, Andi Agus; Mohammad, Febriwan; Alfadli, Muhammad Kurniawan
Bulletin of Scientific Contribution Vol 21, No 3 (2023): 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.v21i3.52131

Abstract

This study analysss the quality of sand stone as reservoir in Sentul Formation, Tarakan Basin, based on petrography and routine core analysis. The quality of the sandstone in facies A (depth of 1743.75–1747.28m) is moderate. This assessment is based on the porosity value of routine core analysis from 19.48% to 27.88%, and permeability value from 25mD to 213 mD. The sandstone quality of facies B (depth of 1741.80 m–1743.75m) is good, this is based on the value of the porosity from routine core ranges from 23.34% to 26.71% and 83-359 mD of permeability value. The quality of sandstone in facies C (depth of 1737.65m–1737.75m) is good. The differences of the quality affected by the various level of compaction, sorting, and contact between the grains. The presence of carbon material and laminated clay also led to differences in the quality of the reservoir through inter-granule space filling. Sandstone mineral composition of each facies dominated by mono crystalline quartz which is chemically relatively stable, so that the cementation and replacement processes do not overly affect the porosity and permeability.
CHARACTERISTICS, RANKING, AND POTENTIAL OF COAL ON SEAM H AND SEAM H2 RIZKY, ALIF DILANDY; Nurdrajat, Nurdrajat; Hardiyono, Adi; Salinita, Silti
Journal of Geological Sciences and Applied Geology Vol 7, No 3 (2023): 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.v7i3.50364

Abstract

Coal is a complex solid object consisting of several chemical elements and comes from plants that are deposited in a basin. The South Sumatra Basin is a basin with the presence of the Muara Enim Formation which is known as a coal-bearing formation. In this research, secondary data was used in the form of proximate analysis, ultimate analysis, and combustion properties analysis results in determining the characteristics, ranking, and potential of coal in the research area. Based on ASTM D 388 – 05 classification, coal in seam H has a Subbituminous B Coal ranking, while seam H2 has a Subbituminous A Coal rating. Based on the parameters in assessing the coal potential use for coal-fired power plants according to Thomas, 2013 in Suhat, et al., 2020, coal in seam H and seam H2 does not support the utilizations, but solutions can be carried out in the form of rewashing sample, coal drying, and coal blending.
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.
High Permeability Zone On Geothermal Manifestations Using Fault Fracture Density In Sembalun Area, Lombok Agung, Yusuf Zaki; Haryanto, Agus Didit; Hardiyono, Adi; Setiawan, Dede Iim; Suleman, Widya Asoka
Journal of Geological Sciences and Applied Geology Vol 5, No 2 (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.v5i2.34937

Abstract

Geothermal manifestations can occur in zones of high permeability. Permeability zones can be analyzed through lineament density, assumed to be associated with faults and fractures which are considered as weak areas that can allow geothermal fluid to pass from reservoir to the surface. This study intends to determine the zone with high permeability in geothermal manifestations. Modeling of surface data in the form of lineament pattern can be analyzed with Fault Fracture Density (FFD) analysis. The lineaments pattern is obtained based on the appearance through DEMNAS satellite imagery. The lineaments pattern deliniated by providing lighting from several angles, from lighting azimuths of 0°, 60°, 120°, 180°, 240° and 300° at a constant altitude of 45°. FFD analysis shows geothermal manifestations appear in the high permeability zone in the Sembalun area, Lombok.
PERAN INTENSITAS HUJAN TERHADAP STABILITAS LERENG DI DAERAH JATISARI, KECAMATAN BOJONGPICUNG, KABUPATEN CIANJUR, PROVINSI JAWA BARAT Sholtan, Devanya Anantasya; Sophian, Raden Irvan; Hardiyono, Adi; ., Iskandar
Bulletin of Scientific Contribution Vol 22, No 3 (2024): 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.v22i3.59017

Abstract

Pada tanggal 25 April 2024 diketahui telah terjadi peristiwa gerakan tanah di daerah Jatisari, Kecamatan Bojongpicung, Kabupaten Cianjur, Provinsi Jawa Barat. Menurut keterangan warga sekitar, persitiwa tersebut terjadi setelah hujan dengan durasi yang cukup panjang. Studi ini bertujuan untuk melihat keterkaitan hujan dengan persitiwa gerakan tanah yang terjadi di daerah Jatisari. Metode yang dilakukan pada penelitian ini meliputi pengamatan lapangan, pembuatan geometri lereng, pengujian laboratorium, dan pemodelan. Pemodelan yang dilakukan berupa analisis rembesan air hujan dengan perangkat lunak Geostudio SEEP/W dan analisis kestabilan lereng dengan perangkat lunak Geostudio Slope/W. Dari analisis tersebut diketahui hujan yang terjadi selama 12 hari dengan intensitas 1.8 mm/jam atau hujan 6 hari dengan intensitas 60 mm/jam dapat menurunkan faktor keamanan (FK) hingga rentang nilai 0.684 – 0.763. Mekanisme berkurangnya kestabilan lereng ini terjadi akibat hilangnya matric suction. Hilangnya matric suction merupakan pengaruh dari infiltrasi air hujan ke dalam permukaan lereng.
KETERDAPATAN BAHAN GALIAN GALENA DI DAERAH CIGEMBLONG, KABUPATEN LEBAK, PROPINSI BANTEN -, Mega Fatimah Rosana; -, Euis Tintin Yuningsih; -, Adi Hardiyono
Bulletin of Scientific Contribution Vol 5, No 3 (2007): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1104.821 KB) | DOI: 10.24198/bsc.v5i3.8153

Abstract

The objective of the research is to identified and investigated the occurrence of lead, its distribution, size, formation, quantity and quality in the district of Cigemblong, regency of Lebak, province of Banten as a guide for advance investigation. Several samples collected and analyzed petrographically to identified rock, alteration and ore mineral variation as well as geochemistry analysis by XRF method.The stratigraphic units of the research area can be classified into three rock units, such as from oldest to youngest one are carbonaceous claystone, tuf, andesitic – dioritic intrusive, and volcanic breccia units. Three alteration types in the research are are prophylitic, argillic, and silicification alteration.Field investigation concluded that mineralization occurred as mineralization zone of quartz veins with N – S and NE – SW direction, partially as thin lensing in claystone unit. Otherwise the distribution are limited, and separated each other. So, it is difficult to trace the vein zone and lensing as same vein.The characteristic of the mineralization zone gangue minerals dominated composed of quartz, calcite and clay mineral, with ore minerals of pyrite 
KARAKTERISTIK PETROLOGI DAN GEOKIMIA BATUAN PIROKLASTIK DAERAH SERAWET PROVINSI SULAWESI UTARA SYAH, MOHAMAD AKBAR; Rosana, Mega Fatimah; Hardiyono, Adi
Bulletin of Scientific Contribution Vol 18, No 2 (2020): 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.v18i2.28942

Abstract

Daerah Serawet, Sulawesi Utara memiliki sebaran batuan piroklastik yang cukup luas, sebagai aktifitas gunungapi berumur kuarter. Tulisan ini membahas mengenai karakteristik dari batuan piroklastik melalui pendekatan petrologi, petrografi, dan analisa geokimia menggunakan empat sampel batuan piroklastik pada daerah penelitian.  Hasil analisis megaskopis dan petrografi menunjukan bahwa batuan piroklastik berupa Tuf kasar berjenis tuf gelas berdasarkan identifikasi komposisi mineralogi dari hasil analisis petrografi.  Analisis geokimia major elemen menunjukan bahwa batuan berjenis dasit dan andesit. Seri magmatik tergolong kedalam seri magma “Kalk alkali” dan afinitas magmanya termasuk “Kalk- alkali tinggi”. Penentuan asal magma menunjukan bahwa magma berinteraksi dengan kontinen sedangkan kandungan Al2O3 yang cukup tinggi serta nilai TiO2 dan MgO yang rendah pada batuan piroklastik mengindikasikan bahwa batuan pada daerah penelitian termasuk kedalam setting tektonik busur kepulauan (Green, 1980 dalam Wilson, 1989). 
ALTERASI DAN MINERALISASI DAERAH GUNUNG BULEUD, DESA GARUMUKTI, KECAMATAN PAMULIHAN, KABUPATEN GARUT, PROVINSI JAWA BARAT Suteja, Rangga; Rosana, Mega Fatimah; Hardiyono, Adi
Bulletin of Scientific Contribution Vol 14, No 2 (2016): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2091.718 KB) | DOI: 10.24198/bsc.v14i2.9798

Abstract

Research area is located in Garumukti, Pamulihan Region, Garut District, West Java Province. The purpose of this research is to determine alteration zone and mineralization type of the research area. Research methods include field observations survey and continued by laboratory analysis (petrography, mineragraphy and SWIR Terraspec analysis). The result indicated, there are three alteration zones: sub-propylitic (chlorite, illite, muscoivite, smektite-illite, muscovitic-illite), advance argilic (kaolinite, dickite, pyrophyllite) and silicification zone (quartz, cristobalite, chalcedony). Thin vein < 5 cm width, show quartz texture of mosaic/saccharoidal, colloform-crustiform bands, bladed and granule. Dissemination, interlocking and vein-like ore texture are found in this research area on pyrite, chalcopyrite and sphalerite. The mineral alteration assemblages of the deposit indicated that this research area is epitermal high sulphidation.  Keyword: Gunung Buleud. Alteration, Mineralization, Epithermal High Sulphidation Daerah penelitian terletak di Desa Garumukti, Kecamatan Pamulihan, Kabupaten Garut, Provinsi Jawa Barat. Penelitian bertujuan untuk mengetahui tipe alterasi dan mineralisasi serta sebarannya di daerah penelitian. Metode penelitian yang dilakukan adalah pemetaan geologi dan analisis laboratorium (analisis petrografi, mineragrafi dan SWIR Terraspec). Berdasarkan hasil penelitian di lapangan dan analisis laboratorium daerah penelitian terbagi menjadi tiga zona alterasi yaitu zona sub-propilitik (klorit, ilit, muskovit, smektit-ilit, muskovit-ilit), zona argilik lanjut (kaolinit, dikit, piropilit) dan silisifikasi (kuarsa, kristobalit, kalsedon). Terdapat vein tipis (<5 cm) dengan tekstur berupa mosaic/saccharoidal, colloform-crustiform bands, bladed dan granular. Sementara pada zona silisifikasi setempat2 terdapat tekstur vuggy. Tekstur mineral bijih yang ditemukan meliputi diseminasi, interlocking dan vein-like. Mineral bijih yang di temukan di daerah penelitian berupa mineral pirit, kalkopirit dan sfalerit. Tipe endapan alterasi mineral daerah penelitian mengindikasikan tipe endapan epitermal sulfida tinggi. Kata kunci: Gunung Buleud, alterasi, mineralisasi, epitermal sulfida tinggi
SISTEM PANAS BUMI DAERAH KALAWAT, KABUPATEN MINAHASA UTARA, PROVINSI SULAWESI UTARA Yamin, Riza Asyari; Patonah, Aton; Hardiyono, Adi; Hadi, Muhammad Nur
Bulletin of Scientific Contribution Vol 13, No 1 (2015): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1099.101 KB) | DOI: 10.24198/bsc.v13i1.8385

Abstract

Kalwat Geothermal Field administratively is located in North Minahasa District, North Sulawesi Province. Litologies of this research area divided by pyroclastic flows and lava. The heat source of this location comes from Mahawu Mountain that located in the southwest outside the research area. Lithology which acts as the cap rock layer is form by pyroclastic flow that has clay minerals which impermeable. Based on petrographic and PIMA abalysis, the alteration minerals that arise are dominated bu montmorillonite and halloysite, so the alteration type of this research area is argilic type and located at the northwest and southwest of research area. The water type that appears are dilute chloride-bicarbonate type and bicarbonate type. Based on the calculation of paleotemperature and geothermometer, there is increase of temperature during the form of mineral and the recent temperature. This is due to increased of volcanic activity in the research area. This research area is water-dominated and moderate temperature system that has range of temperature at 209-2100 C.
KARAKTERISTIK BATUAN BEKU ANDESIT & BREKSI VULKANIK, DAN KEMUNGKINAN PENGGUNAAN SEBAGAI BAHAN BANGUNAN DAERAH UKIR SARI, KECAMATAN BOJONEGARA KABUPATEN SERANG, PROVINSI BANTEN -, Adi Hardiyono
Bulletin of Scientific Contribution Vol 11, No 2 (2013): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1108.194 KB) | DOI: 10.24198/bsc.v11i2.8290

Abstract

The purpose study to recognize compatibility utilization igneous rock and volcanic breccia in research area based on rock characteristic and rock engineering properties. Igneous and volcanic breccias in the study area can be used as a basic building materials but need to be investigated compatibility use in accordance with the characteristics and properties owned engineering standards prevailing rock.
Co-Authors Agung, Yusuf Zaki Agus Didit Haryanto -, Agus Didit Haryanto Andi Agus Nur, Andi Agus Aton Patonah Barkah, Mohamad Nursiyam Budi Muljana Euis Tintin Yuningsih Euis Y. Yuningsih, Euis Y. Febriwan Mohammad, Febriwan Herry -, Herry Ildrem Syafri Iskandar . Iyan Haryanto Kurnia Arfiansyah, Kurnia Matano, Alan Mega F. Rosana, Mega F. Mega Fatimah Rosana Muhammad Kurniawan Alfadli Muhammad Nur Hadi Nanda Natasia Nurdrajat Nurdrajat Raden Irvan Sophian Rangga Suteja, Rangga Riza Asyari Yamin, Riza Asyari RIZKY, ALIF DILANDY Sayaf, Ival Umar Setiawan, Dede Iim Sholtan, Devanya Anantasya Silti Salinita, Silti Suci Sarah Andriany, Suci Sarah Suleman, Widya Asoka SYAH, MOHAMAD AKBAR Trisusanti, Eliana Undang Mardiana Vijaya Isnaniawardhani Yuyun Yuniardi