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Journal of Geoscience, Engineering, Environment, and Technology
Published by Universitas Islam Riau
ISSN : 2503216X     EISSN : 25415794     DOI : 10.25299
Core Subject : Science, Social, Engineering,
Earth & Planetary Sciences Engineering Environmental Science Physics
JGEET (Journal of Geoscience, Engineering, Environment and Technology) published the original research papers or reviews about the earth and planetary science, engineering, environment, and development of Technology related to geoscience. The objective of this journal is to disseminate the results of research and scientific studies which contribute to the understanding, development theories, and concepts of science and its application to the earth science or geoscience field. Terms of publishing the manuscript were never published or not being filed in other journals, manuscripts originating from local and International. JGEET (Journal of Geoscience, Engineering, Environment and Technology) managed by the Department of Geological Engineering, Faculty of Engineering, Universitas Islam Riau.
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Articles 641 Documents
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The Content Of Heavy Metal In Turmeric (Curcuma Domestica Val.) In The Volcanic Rocks Oligocene-Miocene Volcano, Biting Wonogiri, Central Java, Indonesia
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 3 (2024): JGEET Vol 09 No 03 : September (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.3.14896

Abstract

The Biting Wonogiri area is an area composed of Oligocene-Miocene volcanic deposits and volcanic deposits from Lawu Volcano. The rocks in this area consist of pyroclastic rocks, volcanic breccia, and dacite intrusions. Residents in this area more commonly grow herbal plants such as turmeric. Turmeric plants are mostly planted on old volcanic rocks, namely the Oligocene-Miocene age. By studying the planting patterns of residents, an analysis was carried out regarding the heavy metal chemical elements contained in turmeric. The research methodology was carried out using geological mapping to determine the distribution of the rocks that make up the research area and AAS analysis (Atomic Absorption Spectroscopy). This AAS method is used to determine heavy metal content. The heavy metal elements analyzed in turmeric were Hg, Pb, As, Fe, Al, and Mn. From the analysis results it was found that the heavy metal elements Hg, Pb, and As had very low levels, namely around 0.005-0.400 mg/Kg. Meanwhile, the elements Al, Fe, and Mg have high contents. Turmeric grown on dacite and volcanic breccia has higher Al (622.3-1362.76 mg/Kg) and Fe (271.32-806.27 mg/Kg) content compared to turmeric planted on sedimentary rock. Meanwhile, the metal element Mn varies around 6.85-122.01 mg/Kg. By knowing the content of these Western metal elements, it is hoped that turmeric, which contains heavy metal elements, can be used as a superior herbal herbal medicine. These metal elements, which are very important nutrients, come from old volcanic rocks.
Evaluating Chemical Stability Challenges in Surfactant Eor for High-Temperature, High-Salinity Reservoir: the Volve Field Hamidah, Ghoty; Novia Rita; Purnamawati, Neneng
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 1 (2026): JGEET Vol 11 No 01 : March (2026)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2026.11.1.25700

Abstract

This study evaluates the influence of surfactant concentration on oil recovery performance under high-temperature and high-salinity reservoir conditions in the volve field using numerical simulations. Several surfactant concentration scenarios were applied to analyze production response and recovery factor behavior. The result indicate that increasing surfactant concentration only slightly improves oil recovery, with recovery factor remaining within a narrow range from 19.82% to 19.93% across all scenarios. Limited performance is associated with thermal degradation, adsorption, salinity effects, and reduced interfacial tension efficiency under harsh reservoir conditions. This study is limited to numerical simulation and requires laboratory validation to confirm surfactant chemical behavior under actual reservoir conditions. Therefore, future research should prioritize laboratory evaluation of thermally stable surfactants before filed scale implementation.
Evaluation of Matrix Acidizing Using Formation Water Parameters in Hilal Well, Arqom Field, Indonesia Irmaya, Aisyah Indah; Wulandari, Sari; Ismail, Thoriq Miftahul Chair
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 02 (2026): Article In Press-JGEET Vol 11 No 02 : June (2026)
Publisher : UIR PRESS

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Abstract

Formation damage due to scale deposition is a common production problem that reduces reservoir permeability and decreases oil and gas well productivity. One effective remediation technique is matrix acidizing. This study evaluates the effectiveness of matrix acidizing in a sandstone reservoir with carbonate mineral content in Hilal well, Arqom Field, by analyzing production rate changes and formation water characteristics before and after treatment. Formation water analysis plays a critical role in evaluating acid compatibility and revealing mineral dissolution mechanisms during the treatment. The Stiff method was used to characterize formation water, followed by matrix acidizing planning through optimal injection volume and pressure calculations. The treatment involved preflush, main acid injection, and displacement, along with an Injectivity Rate Test (IRT). The effectiveness was evaluated using Productivity Index (PI) and Inflow Performance Relationship (IPR) analysis. The results demonstrate that matrix acidizing significantly increased the PI of Hilal well from 1.62 bbl/psi to 3.15 bbl/psi, resulting in a 102% increase in production. Key technical parameters, including formation breakdown pressure (BHFP), acid hydrostatic pressure (pH), and surface treating pressure (STP), aligned with the designed injection volume of 46 bbl. These results demonstrate that matrix acidizing is an effective method for enhancing well productivity.
Quantifying the Effect of Natural Consolidation and Fluid Discharge on Land Subsidence of the Sidoarjo Mud Volcano, East Java, Indonesia Bayuaji, Giri; Saepuloh, Asep; Pamumpuni , Astyka; Dedy Wijnarko; Maryudhaningrum, Santika Tristi
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 02 (2026): Article In Press-JGEET Vol 11 No 02 : June (2026)
Publisher : UIR PRESS

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Abstract

Land subsidence in the Sidoarjo Mud Volcano (SMV) area has been widely recognized as a consequence of sustained mud discharge and progressive subsurface consolidation. Earlier geodetic studies using GPS and InSAR, combined with geological and geomechanical investigations, have demonstrated persistent long‑term ground deformation, widespread flooding, and severe infrastructure damage linked to these processes. This study aims to (1) quantify spatial and temporal subsidence rates, (2) identify the dominant controlling mechanisms, and (3) estimate the relative contributions of fluid discharge and natural consolidation to total subsidence. Surface deformation was derived through time‑series analysis of Sentinel‑1A SAR data using the pair‑wise logic technique differential interferometric synthetic aperture radar (PLT‑D‑InSAR). These results were integrated with one‑dimensional (1D) consolidation modeling based on lithological coring data and mud discharge records. The PLT‑D‑InSAR analysis successfully captured detailed subsidence patterns over a wide area and shows good agreement with GPS observations (R² ≈ 0.82). The combined D‑InSAR, consolidation, and discharge analysis reveals a very strong correlation (R² ≈ 0.97), indicating that subsidence is mainly governed by fluid discharge and consolidation processes. Fluid discharge accounts for approximately 72.2% of the total subsidence, while natural consolidation contributes about 16.5%. The highest subsidence rates are concentrated near the mudflow center and are structurally influenced by the Watukosek and Siring faults. These findings highlight the dominant role of discharge‑induced deformation and provide important constraints for long‑term hazard assessment and land‑use planning in the SMV region.
Transit Oriented Development (TOD) Development in Senen Area, Central Jakarta, Indonesia Taki, Herika Muhamad; Aliah Amelia; Nathania Azarine; Lubis, Muhammad Zainuddin
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 02 (2026): Article In Press-JGEET Vol 11 No 02 : June (2026)
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Abstract

Senen area, Central Jakarta, is a strategic area that faces various problems, such as traffic congestion, lack of integration between modes of transportation, and minimal facilities for pedestrians and public transportation users. This study aims to evaluate the application of the TOD concept in the Senen area based on principles such as transportation integration, mixed land use, and pedestrian connectivity. This study uses a qualitative descriptive method approach , where the data used is secondary data obtained through literature studies. Literature studies are conducted by referring to previous studies and relevant institutional reports. The data collected includes spatial information, such as maps and geographic data, as well as non-spatial information, such as planning documents and policies. The results of the study indicate that the Senen area has great potential to be developed as a TOD area. Some steps that can be taken include improving connectivity between modes of transportation, improving public facilities, and adding green open spaces. In conclusion, the implementation of TOD in the Senen area can reduce the use of private vehicles, increase the efficiency of public transportation, and create a more comfortable and environmentally friendly city environment.
Disposal Transition and Drainage Design at Pit 2AA SLS Site: A Case Study at PT Sentosa Laju Sejahtera, Loa Janan Suparno, Fanteri Aji Dharma; Ariadi, Arda Bara; Irawan, Januar Fery; Aminah, Siti; Haeruddin; Rini, Utari Retno Sulistyo; Mulyani, Kurnia Dewi; Manek, Emanuel Grace
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 02 (2026): Article In Press-JGEET Vol 11 No 02 : June (2026)
Publisher : UIR PRESS

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Abstract

This research discusses the design of the disposal area transition and drainage system in Pit 2AA of PT Sentosa Laju Sejahtera to overcome the limited space of the stockpile due to the use of the backfilling method. The main issues include effective drainage design, selection of alternative disposal sites, and embankment slope stability analysis. The planned rainfall was calculated using the Gumbel distribution with rainfall data for the last 10 years (2014-2023), while the runoff water discharge was calculated using the Rational method, resulting in a discharge of 7.8 m³/second. The open channel was designed with two trenches, Trenches A and B, with capacities of 9.59 m³/sec and 7.92 m³/sec, respectively. The disposal design was placed outside the Life of Mine boundary, using the gradual finger disposal method with three levels from elevation 93 to 105 meters. The slope geometry consists of a tier height of 4 meters, a tier width of 15 meters, a single slope angle of 30°, and an overall slope of 13°. The total disposal capacity reached 441,310 BCM. Slope stability analysis was conducted using the Janbu Simplified method, showing that the factor of safety (FK) value is in the range of 1.308-2.404, meeting the minimum FK ≥ 1.3 according to the Decree of the Minister of Energy and Mineral Resources No. 1827 K/30/MEM/2018. The results show that the drainage and disposal designs are technically feasible and support the sustainability of mine operations.
Hydrothermal Alteration and Geochemical Signatures of High-Sulfidation Epithermal Gold Mineralization in Petai Patah, West Kalimantan, Indonesia Hede, Arie Naftali Hawu; Azmi, Noprizan; Syafrizal
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 02 (2026): Article In Press-JGEET Vol 11 No 02 : June (2026)
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Abstract

High-sulfidation epithermal systems are an important source of precious metals in volcanic-arc settings, yet detailed studies of these systems in the Schwaner Mountains of western Borneo remain scarce. This study investigates the hydrothermal alteration and geochemical signatures of high-sulfidation epithermal gold mineralization in the Petai Patah area, Ketapang District, West Kalimantan, Indonesia, hosted within the Cretaceous Sukadana Granite and the Paleogene Kerabai Volcanic Complex. An integrated analytical approach was employed, combining reflectance spectroscopy, petrographic analysis, X-ray diffraction (XRD), and whole-rock geochemistry on 15 representative rock samples from surface outcrops and drill cores. Results reveal a well-defined hydrothermal alteration zonation, comprising an advanced argillic core (alunite, pyrophyllite, dickite) in Pit Lokma, surrounded by a phyllic zone (dominant muscovite/sericite–illite–pyrite assemblage) extending into Pit Limun. Gold mineralization (maximum 1.61 ppm Au in sample DC 347, Pit Limun) is spatially correlated with these alteration zones and occurs in association with sulfide minerals, suggesting a structurally controlled fluid pathway. Elevated As concentrations in gold-bearing samples from Pit Limun, together with the diagnostic mineralogical assemblage, support the interpretation of a high-sulfidation epithermal system. This study provides new insights into the spatial relationship between alteration zonation and gold enrichment within a high-sulfidation epithermal system, offering implications for mineral exploration in similar magmatic arc settings across Southeast Asia.
Effectiveness of Vetiver (Vetiveria zizanioides) Application with Modular System in Soil Bioengineering for Soil Reinforcement Nurmansyah, Muhammad Reza; Putra, Heriansyah; Arif, Chusnul
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 02 (2026): Article In Press-JGEET Vol 11 No 02 : June (2026)
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Abstract

Indonesia has a diverse topography characterized by many hilly and mountainous regions, rendering it vulnerable to landslides. BNPB data indicate that, in 2024, there were 207 landslide incidents in Indonesia. Soil bioengineering methods using vetiver plants can improve soil stability. This study aimed to evaluate the effectiveness of vetiver application via a modular soil stabilization system using soil bioengineering. The research was conducted by testing soil properties, followed by planting vetiver in 10-cm-diameter pipes 50 cm high, with a geotextile measuring 10 × 10 × 10 cm on top containing a mixture of soil and planting media. Subsequently, maintenance, soil shear strength testing, and root dimension observations were performed on samples aged 1, 2, and 3 months after planting (MAP). The test results showed that the root growth rate increased by 30–40 cm in vetiver samples in the modular system. The most significant increase in soil shear strength was observed in the cohesion parameter, reaching 19.55 kPa. Therefore, vetiver roots contributed to the greatest increase in cohesion (c), reaching 8.57 kPa. The application of vetiver significantly increases soil shear strength, making it suitable for use as a slope reinforcement method.
Can Liquefaction Be Repeated? An Electrical Resistivity Study at South Palu, Indonesia Satiawan, Soni; Hadad, Dhani Ahmad; Saragih, Donar
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 02 (2026): Article In Press-JGEET Vol 11 No 02 : June (2026)
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Abstract

The recurrence of liquefaction remains a significant concern, prompting a resistivity study in South Palu to investigate subsurface condition associated with this phenomenon. A total of eight lines 2D resistivity lines with dipole-dipole configuration and 10m electrode spacing were acquired in the South Palu subdistrict, covering a cumulative length of 1470m. All stages of data processing and modelling were conducted using a regularized inversion algorithm implemented in the Phyton-based ResIPy software. The inversion results revealed three distinct resistivity layers, low-resistivity ranging from 4.1 – 78.5 ohm.m, interpreted as low permeability a sandy shale or clay rich soil with saturated clay layer extending to a depth of approximately 10m, an underlying high-resistivity layer ranging from 78.6 - 201.4 ohm.m, interpreted as a saturated sand or gravel layer with ± 10m of thickness and associated as a good aquifer and the deep layer at ±20 m depth with highest resistivity (> 200 ohm.m) which is interpreted as compacted sand or hard soil and acted as the base soil in this study area. The evidence of sand intrusion features, upward – moderate to high resistivity intrusions, potentially associated with liquefaction events, were observed in six of resistivity sections. These are indicated by the upward penetration of moderate to high-resistivity value through the low-resistivity layer, towards the surface. Additionally, the recurrence of liquefaction is still conceivable since the existence of ±10m of layer-2 which is interpreted as the most potential liquefiable layer and the thickness of low resistivity of layer-1 and in study area, particularly if subjected to strong earthquake motion.
Preliminary Study of Geo-Magnetic Phenomena at The Arjuno–Welirang Volcano, Indonesia Adinda Salsabilla Raindraputri Hidayat; Sukir Maryanto; Faridha Aprilia; Elizza Inaya Permata Sari; Athorhab, Iskara Hadijah Aqila Nasywa Rastramata
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 02 (2026): Article In Press-JGEET Vol 11 No 02 : June (2026)
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Abstract

Mount Arjuno–Welirang is an active volcano in East Java that exhibits volcanic activity in the form of shallow and deep earthquakes, as well as fumarolic emissions. This study aims to monitor the subsurface dynamics of the volcano through the integration of magnetic and seismic methods. Magnetic field measurements were carried out using a proton precession magnetometer to obtain local magnetic anomalies after applying diurnal corrections, IGRF correction, and regional–residual anomaly separation. The RTP and residual maps reveal high-anomaly zones that are interpreted as shallow magma intrusions, as well as low-anomaly zones associated with hydrothermal alteration and fracturing. These interpretations are integrated with the lithology of the Qvaw Formation, which consists of lava, volcanic breccia, and tuff. In addition, MAGDAS data were used to analyze diurnal geomagnetic variations (H, D, Z), which show significant fluctuations during certain periods, indicating local geomagnetic disturbances likely influenced by seismic activity or subsurface geological processes. The combination of magnetic and seismic methods provides a more comprehensive understanding of magma pathways, hydrothermal fluid dynamics, and potential increases in volcanic activity, thereby supporting disaster mitigation efforts in the Arjuno–Welirang region.

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