cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Ikhwannur Adha
Contact Email
ikhwannur.adha@upnyk.ac.id
Phone
-
Journal Mail Official
jigpangea@upnyk.ac.id
Editorial Address
Jurusan Teknik Geologi Jl. Padjajaran, Sleman, Yogyakarta, Indonesia. 55283
Location
Kab. sleman,
Daerah istimewa yogyakarta
INDONESIA
Jurnal Ilmiah Geologi pangea
Published by Universitas Pembangunan Nasional Veteran Yogyakarta
ISSN : 2356024X     EISSN : 2987100X     DOI : https://doi.org/10.31315
Core Subject : Science, Social, Engineering,
Earth & Planetary Sciences Energy Engineering Environmental Science
Jurnal Ilmiah Geologi Pangea (JIG Pangea) is an Indonesian scientific journal published by the Geological Engineering Department, Faculty of Mineral and Technology, UPN "Veteran" Yogyakarta. The journal receives Indonesian or English articles. Those articles are selected and reviewed by our professional editors and peer reviewers. The published article in JIG Pangea covers all geoscience and technology fields including Geology, Geophysics, Petroleum, Mining, and Geography. The subject covers a variety of topics including : geodynamics, sedimentology and stratigraphy, volcanology, engineering geology, environmental geology, hydrogeology, geo-hazard and mitigation, mineral resources, energy resources, medical geology, geo-archaeology, applied geophysics and geodesy.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 219 Documents
 18   19   20   21   22 
Geologi Daerah Cipongkor Dan Sindangkerta, Kabupaten Bandung Barat, Provinsi Jawa Barat Sofyan, Sony; Rachmawati, Dwi; Radityo, Daniel; Sahmura, Yemina
Jurnal Ilmiah Geologi PANGEA Vol. 11 No. 2 (2024): Jurnal Ilmiah Geologi Pangea
Publisher : PROGRAM STUDI TEKNIK GEOLOGI FAKULTAS TEKNOLOGI MINERAL UPN VETERAN YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jigp.v11i2.13624

Abstract

Wilayah Sindangkerta dan Cipongkor, dua kecamatan di Kabupaten Bandung Barat yang kaya akan potensi alam, merupakan wilayah yang menarik untuk dipetakan, terletak pada koordinat 6°57'00" sampai dengan 7°00'00" Lintang Selatan dan 107°21'50" sampai dengan 107°24'25" Bujur Timur dengan luas wilayah kurang lebih ±5 km x 5 km. Letak geografisnya yang strategis, dengan perbukitan, sungai, dan lahan pertanian yang subur, menjadikan wilayah ini memiliki karakteristik unik yang perlu dipetakan secara detail. Melalui pemetaan, dapat diketahui potensi sumber daya alam, kawasan lindung, dan kendala yang dihadapi wilayah tersebut, seperti lereng yang terjal atau rawan erosi. Daerah penelitian termasuk dalam Mandala Sedimentasi Cekungan Bogor dan memiliki struktur dengan Pola Meratus dan Pola Sumatera. Satuan Geomorfologi daerah penelitian terbagi menjadi 3 satuan yaitu Dataran Aluvial, Perbukitan Lipatan dan Perbukitan Aliran Lava. Satuan Litologi terdiri dari 5 satuan dimulai dari Satuan Batugamping tertua termasuk dalam Formasi Cilanang berumur Miosen Awal yang diendapkan pada zona peralihan air laut dan daratan, Satuan Batupasir termasuk dalam Formasi Cilanang berumur Miosen Tengah yang diendapkan pada lingkungan laut, Satuan Breksi berumur Miosen Akhir, Satuan Andesit berumur Pliosen, dan Satuan Aluvium berumur Plistosen - Resen. Struktur Geologi yang berkembang pada daerah penelitian teridentifikasi berupa sesar naik dan antiklin. Hasil pengamatan peta DEM, diperoleh informasi bahwa daerah penelitian terdiri dari bentang alam perbukitan terlipat, lembah, dan dataran dengan elevasi antara 600 - 900 mdpl, arah kelurusan antara 0° - 350°, dan gradien lereng antara 0% - 40%.
Evaluating the Causes of Land Subsidence in Central Jakarta using 1-Dimensional Consolidation Approach Naufal, Muhammad Adi; Sadisun, Imam Achmad; Kartiko, Rendy Dwi; Septiandi, Muhammad Iqbal
Jurnal Ilmiah Geologi PANGEA Vol. 11 No. 2 (2024): Jurnal Ilmiah Geologi Pangea
Publisher : PROGRAM STUDI TEKNIK GEOLOGI FAKULTAS TEKNOLOGI MINERAL UPN VETERAN YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jigp.v11i2.13643

Abstract

Land subsidence in Central Jakarta, driven by both natural geological processes and human-induced factors, threatens the stability of the region’s infrastructure. Monitoring of land subsidence with InSAR in Central Jakarta shows an average speed of 1-10 cm/year. Land subsidence in Central Jakarta presents a growing geotechnical challenge, exacerbated by both natural consolidation and anthropogenic influences. During the period of 2018 to 2023, Jakarta's booming industrial development became a major factor contributing to the city's ongoing land subsidence problem. This study aims to evaluate the contribution of consolidation and anthropogenic factors to land subsidence in Central Jakarta. The analytical method uses 1-D consolidation theory is applied to calculate land subsidence. Borehole data from nine locations were used to estimate subsidence rates. Results indicate that natural consolidation has significant role in land subsidence, which is predicted to continue until 2368. Anthropogenic factors such as groundwater level decrease and additional building loads accelerate the subsidence process. The rate of soil subsidence for natural consolidation in Central Jakarta ranges from 1.5-9.1 cm/year. Meanwhile, there are anthropogenic factors such as groundwater level decrease and increase of building load achieved 3.4-17.4 cm/year. These anthropogenic factors accelerate the rate of soil subsidence by 1.9-8.3 cm/year or equivalent to 26.0-47.7%. Based on analysis, land subsidence analysis in Central Jakarta shows that increase in building load and groundwater level decrease in five years does not significantly affect the subsidence that occurs. However, role of anthropogenic factors can exacerbate land subsidence in Central Jakarta. Groundwater extraction arrangements and building load management need to be considered to minimize the negative impact on infrastructure.
Karakteristik Endapan Timah Primer Pada Daerah Paku, Bangka Selatan, Kepulauan Bangka Belitung Restiko, Favian Avila
Jurnal Ilmiah Geologi PANGEA Vol. 11 No. 2 (2024): Jurnal Ilmiah Geologi Pangea
Publisher : PROGRAM STUDI TEKNIK GEOLOGI FAKULTAS TEKNOLOGI MINERAL UPN VETERAN YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jigp.v11i2.13899

Abstract

Geological mapping conducted in Desa Paku, Bangka Belitung Islands. The mapping aimed to determine the characteristics of primary tin deposits in the study area by examining the distribution of lithology, stratigraphic sequence, geological structure patterns, distribution of alteration  mineralization, and potential natural resources. The study involved three stages: preliminary, data acquisition, and data analysis. The stratigraphy of the study area consists of three rock units, from oldest to youngest: Pemali phyllite lithodeme, Tanjunggenting sandstone unit, and Alluvial deposits. Geological structures include joints, faults, and bedding. Faults are divided into seven groups: right-lateral Bukit Panjang fault, left-lateral Bukit Panjang fault, left-lateral Bukit Baji fault, right-lateral Bukit Baji fault, left-lateral Pelawan fault, left-lateral Atiau fault, and normal Bukit Panjang fault. Study area are divided into five based on the formation temperature of minerals, from high to low temperature: Quartz ± Sericite, Quartz ± Tourmaline, Quartz + Sericite + Illite ± Dickite ± Halloysite ± Tourmaline, Quartz+Kaolin+Dickite ± Illite-smectite, Kaolin + Montmorillonite + Illite-smectite. Sn content varies based on geometry, sheeted vein  (112-114 ppm) and lode (112-6.044 ppm). The highest Sn content in the sheeted vein (19,800 ppm) and (21,621 ppm), presented in hydrothermal breccia with disseminated cassiterite minerals in a WE direction.
Geologi dan Studi Cleat Terhadap Kualitas Batubara Pada Daerah Air Panas, Kecamatan Loa Janan, Kabupaten Kutai Kartanegara, Provinsi Kalimantan Timur Arya, Melia Fajri Sukma; Rahmad, RM. Basuki
Jurnal Ilmiah Geologi PANGEA Vol. 11 No. 2 (2024): Jurnal Ilmiah Geologi Pangea
Publisher : PROGRAM STUDI TEKNIK GEOLOGI FAKULTAS TEKNOLOGI MINERAL UPN VETERAN YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jigp.v11i2.13914

Abstract

The research location is in Air Panas Area, Loa Janan Subdistrict, Kutai Kartanegara Regency, East Kalimantan Province and is included in the Kutai Basin with coal-bearing formation which is Balikpapan Formation. This study aims to determine the local geological conditions in the study area and the influence of cleat on coal quality. The research stages include literature study, geological mapping, and cleat data collection. The analysis was conducted in the form of flow pattern analysis, landform analysis, petrographic analysis, geological structure analysis, micropaleontology analysis, depositional environment analysis, and cleat analysis on coal quality. The analysis shows that the study area has radial and sub-trellis flow patterns. Geomorphological conditions consist of mining landforms, mine ponds/sumps, dumps, river bodies, swamps, flood plains, structural hills, and remnant hills. The stratigraphy of the study area from old to young is composed by Balikpapan mudstone unit, Balikpapan sandstone unit and alluvial deposits. Based on the measured stratigraphic cross section, the depositional environment is Transitional Lower Delta Plain. The developed geological structure is formed due to the main thrust that has Southeast-Northwest direction that produces bridle, cleat, and fold structures. Cleat characteristics in the study area show a normal pattern and are not affected by geological processes in the form of geological structures (endogenic cleat). Special study studies show that cleat attribute data in the form of cleat length, cleat spacing, and cleat openings can affect the quality of coal seams, especially on ash, total sulfur, and calorific value.
Identification of Recent Ripple in Opak River Estuary, Kretek Subdistrict, Bantul Regency, Yogyakarta Special Region Gunawan, Indra; Damayanti, Nabila Zafira; Astuti, Ella Dwi; Febrianti, Yeni; Rachmatullah P.P., Tegar Bagaskoro; Hutabarat, Ari Napas
Jurnal Ilmiah Geologi PANGEA Vol. 11 No. 2 (2024): Jurnal Ilmiah Geologi Pangea
Publisher : PROGRAM STUDI TEKNIK GEOLOGI FAKULTAS TEKNOLOGI MINERAL UPN VETERAN YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jigp.v11i2.14006

Abstract

Ripple can be formed from various factors, namely wind, waves, currents, and tidal influences. The research area is located at the mouth of the Opak River, Kretek District, Bantul Regency, Yogyakarta Special Region with coordinates X: 421331 and Y: 9114347. This study aims to determine the factors that affect the formation of ripple and the dominance of factors that affect ripple at the mouth of the Opak River based on the calculation of the ripple index parameter. This research begins with a literature study to find strong theoretical basis. The data collected include wavelength (L), lee side length (LL), stoss side length (LS), maximum wavelength (Lmax), minimum wavelength (Lmin), mean wavelength (L), height (H), curved crestline length (CC), and deviation from straight line (d) and azimuth used to determine the general direction of the ripple. Then the calculation is carried out to obtain each ripple index parameter in the form of RI (Ripple index), PI1 (Parallelism Index 1), PI2 (Parallelism Index 2), SI (Straightness Index), RSI (Ripple Symmetrical Index), CI (Continuity Index) values. Based on data calculations, the results of the Ripple Index range from 0-20, Ripple symmetrical index ranges from 1-4. Parallelism index 1 ranges from 0-3, Parallelism index 2 ranges from 0-1, Straightness index ranges from 0-1.6. From the results of these calculations, it can be concluded that the ripple is affected by sea waves and the current of the Opak River.
Geologi dan Karakteristik Laterit Nikel Berdasarkan Mineralogi Batuan Dasar dan Geokimia Daerah Routa dan Sekitarnya, Kecamatan Routa, Kabupaten Konawe, Provinsi Sulawesi Tenggara Handika, Erdin Tri; Sutarto, Sutarto; Soesilo, Joko
Jurnal Ilmiah Geologi PANGEA Vol. 11 No. 2 (2024): Jurnal Ilmiah Geologi Pangea
Publisher : PROGRAM STUDI TEKNIK GEOLOGI FAKULTAS TEKNOLOGI MINERAL UPN VETERAN YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jigp.v11i2.14138

Abstract

The main nickel production in Indonesia mostly comes from laterite deposits that are widely found in eastern Indonesia. The research was conducted in the Konawe area, Southeast Sulawesi which is geologically composed of ultramafic rocks in the form of peridotite (harzburgite, lherzolite, wehrlite), dunite, websterite, and others. These ultramafic rocks are bedrock that has the potential to form nickel laterite deposits. To find out the characteristics of nickel laterite deposits, surface mapping, subsurface mapping or sub-surface mapping were carried out by drilling to determine the subsurface conditions, and statistical data processing in the form of geochemical data of the elements MgO, SiO2, Al2O3, Fe, Ni, MnO, Co, and Cr2O3. From the data, it is known that the research area is dominated by the Routa Peridotite Unit which has olivine and ortho-pyroxene mineral content based on petrographic analysis so that the enrichment of Ni content produced in the laterite zone is high. The research area has a thick and complete laterite zone where there is a cover soil zone consisting of Top Soil (SO), and Ferricrete (FE), a limonite zone consisting of Ferrigenous Zone (FZ), Transported limonite (TL), Limonite (LM), a saprolite zone consisting of Ferrigenous Saprlote (FS), Saprolite (SP), Rocky Saprolite (RS), Saprolite Rock (SR), bedrock zone. Based on drilling data, there is a thick limonite zone with mineral content in the form of hematite, goethite, manganese, maghemite, and several silica veins or silica boxwork are found which are characteristics of nickel oxide or oxide deposits and in the saprolite zone, garnierite minerals and serpentine minerals are found which are characteristics of hydrous Mg-Silicate nickel laterite deposits. Based on the correlation of drilling data, there is a thick laterite zone formed in flat to sloping morphology, while a thin laterite zone is formed in sloping to steep areas.
Analisis Stabilitas Lereng Disposal Pada Desain In Pit Dump E, Daerah Lawang Kidul, Kabupaten Muara Enim, Sumatra Selatan Prasetiawati, Septika; Dava, M. Hajjrol; Radityo, Daniel
Jurnal Ilmiah Geologi PANGEA Vol. 12 No. 2 (2025): Jurnal Ilmiah Geologi Pangea
Publisher : PROGRAM STUDI TEKNIK GEOLOGI FAKULTAS TEKNOLOGI MINERAL UPN VETERAN YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jigp.v12i2.15925

Abstract

Open pit mining for coal requires an effective approach to overburden management, frequently employing in pit dumping (spoil disposal in excavated pits). However, water ponding and mud accumulation at the pit floor are critical variables that increase the potential for slope instability and the risk of landslides. This research aims to quantitatively analyze the stability of the proposed in pit dump design slopes at PT Pamapersada Nusantara, Muara Enim, South Sumatra, focusing on the impact of maximum mud conditions. The stability analysis was conducted using the Limit Equilibrium Method (LEM), specifically the Morgenstern-Price method, applied across six cross-sections. Four sections (A–D) represent the initial design, and two sections (E–F) represent the maximum mud conditions. The calculated Factor of Safety (FS) revealed significant contrasts. Based on the standard set by the Minister of Energy and Mineral Resources Decree No. 1827 K/30/MEM Year 2018 (FS > 1.3), only sections C–C’ (FS = 2.304) and D–D’ (F = 2.271) are classified as safe. Conversely, the four remaining sections (A–A’, B–B’, E–E’, and F–F’) have FS values below the critical threshold of 1.3. Specifically, sections E–E’and F–F’ showed very low FS values, confirming that the presence of mud is the dominant factor causing instability. This indicates that most of the dump slopes are at high risk of failure and categorized as unsafe. Consequently, these analysis results provide a critical foundation for consideration in the planning of future slope geometry redesigns
Analisis Kestabilan Lereng Highwall Tambang Batubara Pit X Pada Kabupaten Balangan, Kalimantan Selatan Andewa Fitru Fadhlurohman; Daniel Radityo
Jurnal Ilmiah Geologi PANGEA Vol. 12 No. 2 (2025): Jurnal Ilmiah Geologi Pangea
Publisher : PROGRAM STUDI TEKNIK GEOLOGI FAKULTAS TEKNOLOGI MINERAL UPN VETERAN YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jigp.v12i2.15932

Abstract

Coal mining is generally carried out using the open-pit method, which results in the formation of surrounding slopes. Slope stability analysis is essential to determine the safety factor value and prevent potential landslides. This study aims to identify the rock formations and determine the safety factor of the highwall slope in pit “X.” Administratively, the study area is located in Balangan Regency, South Kalimantan Province. The research methodology includes field mapping to obtain primary data on lithology types and orientations, as well as the scanline method on the rock slope to determine the Geological Strength Index (GSI). Secondary data obtained from the company include slope design data, current topography, laboratory test results of rock samples, and groundwater level data. Slope stability analysis was conducted on six cross-sections, from section A–A’ to section F–F’, along the highwall using the Limit Equilibrium Method (LEM) with the Morgenstern-Price approach and the Generalized Hoek-Brown failure criterion. The analysis was performed under both static and dynamic conditions with a horizontal seismic coefficient of 0.05. The results show that all six slope sections have safety factor values greater than 1.3 under static conditions and greater than 1.1 under dynamic conditions, indicating that the slopes are classified as stable.
ANALISIS KESTABILAN LERENG DISPOSAL "X" PADA TAMBANG TERBUKA BATUBARA, KABUPATEN BALANGAN, KALIMANTAN SELATAN Putri Anjani, Anissa; Radityo, Daniel
Jurnal Ilmiah Geologi PANGEA Vol. 12 No. 2 (2025): Jurnal Ilmiah Geologi Pangea
Publisher : PROGRAM STUDI TEKNIK GEOLOGI FAKULTAS TEKNOLOGI MINERAL UPN VETERAN YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jigp.v12i2.15934

Abstract

Coal mining activities involve waste material disposal, where slope stability must be maintained to ensure operational safety. This study aims to analyze the slope conditions and determine the factor of safety (FoS) of the disposal slope design to ensure compliance with the minimum safety criteria. The study area is located within the Mining Business Permit (IUP) of PT “Y”, Balangan Regency, South Kalimantan Province. The analysis was conducted using the Limit Equilibrium Method (LEM) with the Morgenstern–Price approach and Mohr–Coulomb failure criterion, utilizing Slide 6.0 software. The data used include actual and 2025 design topography, Standard Penetration Test (SPT) borehole data, geotechnical parameters (cohesion, internal friction angle, and unit weight), and groundwater levels obtained from standpipe piezometers. The results show that all ten analyzed disposal slope sections have FoS values greater than 1.3, indicating that the slopes are stable and suitable for further development.

Page 22 of 22 | Total Record : 219

 18   19   20   21   22 

Filter by Year

2014 2025


Reset
Filter By Issues
All Issue Vol. 12 No. 2 (2025): Jurnal Ilmiah Geologi Pangea Vol. 12 No. 1 (2025): Jurnal Ilmiah Geologi Pangea Vol. 11 No. 2 (2024): Jurnal Ilmiah Geologi Pangea Vol. 11 No. 1 (2024): Jurnal Ilmiah Geologi Pangea Vol 11, No 1 (2024): Jurnal Ilmiah Geologi Pangea Vol 10, No 2 (2023): Jurnal Ilmiah Geologi Pangea Vol 10, No 1 (2023): Jurnal Ilmiah Geologi PANGEA Vol 9, No 2 (2022): Jurnal Ilmiah Geologi PANGEA Vol 9, No 1sp (2022): Jurnal Ilmiah Geologi PANGEA Edisi Spesial Vol 9, No 1 (2022): Jurnal Ilmiah Geologi PANGEA Vol 8, No 2 (2021): Jurnal Ilmiah Geologi PANGEA Vol 8, No 1 (2021): Jurnal Ilmiah Geologi PANGEA Vol 7, No 2 (2020): Jurnal Ilmiah Geologi PANGEA Vol 7, No 1 (2020): Jurnal Ilmiah Geologi PANGEA Vol 6, No 2 (2019): Jurnal Ilmiah Geologi PANGEA Vol 6, No 1 (2019): Jurnal Ilmiah Geologi PANGEA Vol 5, No 2 (2018): Jurnal Ilmiah Geologi PANGEA Vol 5, No 1 (2018): Jurnal Ilmiah Geologi PANGEA Vol 4, No 2 (2017): Jurnal Ilmiah Geologi PANGEA Vol 4, No 1 (2017): Jurnal Ilmiah Geologi PANGEA Vol 3, No 2 (2016): Jurnal Ilmiah Geologi PANGEA Vol 3, No 1 (2016): Jurnal Ilmiah Geologi PANGEA Vol 2, No 2 (2015): Jurnal Ilmiah Geologi PANGEA Vol 2, No 1 (2015): Jurnal Ilmiah Geologi PANGEA Vol 1, No 2 (2014): Jurnal Ilmiah Geologi PANGEA Vol 1, No 1 (2014): Jurnal Ilmiah Geologi PANGEA More Issue