cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Adi Suryadi
Contact Email
adisuryadi@eng.uir.ac.id
Phone
+62822 8389 6947
Journal Mail Official
jgeet@journal.uir.ac.id
Editorial Address
Jl. Kaharuddin Nasution No 113 Perhentian Marpoyan, Pekanbaru, Riau 28284
Location
Kota pekanbaru,
Riau
INDONESIA
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.
Arjuna Subject : -
Articles 551 Documents
 33   34   35   36   37 
Temporal variation in sandstone composition of Miocene Jatiluhur Formation in the Bogor Trough, West Java, Indonesia Abdurrokhim; Billy Adhiperdana; Hendarmawan
Journal of Geoscience, Engineering, Environment, and Technology Vol. 7 No. 3 (2022): JGEET Vol 07 No 03 : September (2022)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2022.7.3.9311

Abstract

Bogor Trough in the West Java are typified by turbidity deposits with the source are mostly characterized by volcanoclastic materials from the southern area. The Trough actually receipt the sediment from both volcanoclastic materials from the south and continental source from the north. But, the discussions of sediments in term of composition and temporal variation are rare to be reported, especially the sediments from the north. This manuscript intends to discuss the temporal variation in detrital compositional and depositional facies of the Neogene sediments that delivered from the north (i.e., Sundaland) into the Bogor Trough, which is represented by Miocene Jatiluhur Formation. A total of 36 selected samples have been taken for identifying the minerals using a polarization microscope. Modal analysis of the Gazzi-Dickinson method was applied for this provenance study of sandstones samples, which are consisting largely of quartz and feldspar, then sedimentary rock and volcanic rock fragments, glaucony, mud chips and skeletal fragments. Sundaland, a continental block highland area in the north, is interpreted to have been the provenance of sediments of the Jatiluhur Formation, which is also considered to be the source area for the Paleogene sediments. Granitic igneous rocks are interpreted as the source of dominance of monocrystalline quartz grains, or the product of long-distance transport of polycrystalline quartz from metamorphic rocks But, however late Miocene samples (upper part of formation) represent that the size and amount of glauconite grains are increasing, and texturally mud supported. Volcanic rocks materials are also observed. The upper part of Jatiluhur Formation records the starvation of sediment discharge into the basin, which has been also promoted for development of carbonate reef Klapanunggal Formation in the self-margin setting, and suggesting that the basin have directly received or indirectly some contemporaneous volcanic provenances sediment from the southern area.
Control Structure On Damage Zone and Fault Plane to Geometry Of Quartz Veins and Calcite In Muaradua Ogan Komering Ulu Selatan, South Sumatra, Indonesia Budhi Setiawan; Pratama Goestyananda
Journal of Geoscience, Engineering, Environment, and Technology Vol. 7 No. 4 (2022): JGEET Vol 07 No 04 : December (2022)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2022.7.4.9411

Abstract

Geological mapping was carried out on the Gilas and Malau rivers in the Muaradua area, South Ogan Komering Ulu Regency, South Sumatra by observing the presence of joints, faults, and veins in the granite and phyllite rock outcrops of the Tarap Formation. Research on pattern geometry and vein type in the crushing zone is focused on measuring the direction (trend) of veins and joints. The measurement results are then analyzed to obtain a general pattern of quartz and calcite veins so that the orientation of their development can be known. The method used in this study is in the form of determining the orientation and geometry of the veins based on classifications that refer to several studies, then an analysis is carried out using DemNAS data to determine the general direction of the straightness pattern of the study area. The quartz veins that developed in the study area have an extensional fracture type with the geometry found in the form of isolated, abutting, cutting, mutually-cutting, and crosscutting. The veins that develop in the research area are relatively north-south and west-east and indicated the presence of a fault and traces of deformation that occurred in the study area. With the help of veins and joints found in the study area, it is possible to determine the structural control of the presence of a crushing zone in the fault plane.
Assessment of Geosite and Geomorphosite at South Solok Aspiring Geopark Area Rina Sahara; Budhi Setiawan
Journal of Geoscience, Engineering, Environment, and Technology Vol. 7 No. 3 (2022): JGEET Vol 07 No 03 : September (2022)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2022.7.3.9520

Abstract

South Solok is one of the five districts designated as the aspiring of the Ranah Minang Geopark. Various reliefs and geological structures cause the diversity of landscapes to be an attraction for tourists and ecosystems with biodiversity. The study intends to identify geosite and geomorphosite in the South Solok area with field observations to describe the state of geology, geomorphology of geosite sites, and geomorphosite. Site assessment is carried out quantitatively with five assessment parameters; scientific, educational, functional, tourist, and posting activities on tourist sites on social media. Field observation found 17 sites classified into four groups, specifically waterfalls, manifestations of hot springs, geomorphological landscapes, and caves. Based on the results of the highest value representation obtained by the Batukapal Cave sites with a value of 44.86% and the lowest at Timbulun Waterfall at 0.1%. Of the 17 sites, four sites are considered the main sites in the research area: Suliti Waterfall, Sapan Maluluang Hot Spring Manifestation, Batukapal Cave, and Camintoran.
Rock characteristics of post-caldera volcanoes in Dieng volcanic complex (DVC), Central Java, Indonesia Indranova Suhendro; Muhammad Nadafa Isnain; Rizky Wahyudi
Journal of Geoscience, Engineering, Environment, and Technology Vol. 7 No. 4 (2022): JGEET Vol 07 No 04 : December (2022)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2022.7.4.10015

Abstract

The Dieng volcanic complex (DVC) has one of the densest post-caldera volcanisms activity presents in Indonesia, yet its population density is considerably high. Therefore, it is important to identify the rock characteristics produced by the DVC post-caldera volcanoes to understand the risks and future hazards (i.e., eruption style). Based on lithology, we have classified DVC post-caldera volcanoes as (1) pyroclastic domain (PD; including Pagerkandang, Merdada, and Pangonan), and (2) lava domain (LD; including Prambanan, Kendil, Pakuwaja, Sikunir, Sikarim, and Seroja). PD is characterized by the domination of pyroclastic materials (mostly ash and lapilli) with oxidized scoria and volcanic lithics (fresh and/or altered) as the main components. The oxidized scoria clasts are moderately vesicular (27–41 % vesicularity; ) and phenocryst poor (<5 % phenocryst crystallinity, ), with plagioclase, pyroxene, and oxides as the main phenocryst phases. The LD is composed predominantly of lava. The observed lavas are typically dense (mostly <1 % , phenocryst rich (21–47 % ), and include plagioclase, pyroxene, biotite, amphibole, and oxides as the main phenocryst phases. Such differences in mineralogy and textures (i.e., vesicularity and crystallinity) suggest that PD and LD were likely sourced from different magmatic sources with different eruption styles (explosive and effusive styles, respectively). We have suggested that civilization settlements near PD are facing major threats from explosive magmatic, phreatomagmatic, and phreatic eruptions that could produce significant fallouts, ballistic materials, and highly destructive pyroclastic density currents. LDs pose a threat in the form of effusive magmatic eruptions such as lava flows and/or domes.
Estimation of density log and sonic log using artificial intelligence: an example from the Perth Basin, Australia Muhammad Ridha Adhari; Muhammad Yusuf Kardawi
Journal of Geoscience, Engineering, Environment, and Technology Vol. 7 No. 4 (2022): JGEET Vol 07 No 04 : December (2022)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2022.7.4.10050

Abstract

It is well understood that with a large number of data, an excellent interpretation of the subsurface condition can be produced, and also our understandings of the subsurface conditions can be improved significantly. However, having abundant subsurface geological and petrophysical data sometimes may not be possible, mainly due to budget issues. This situation can generate issues during hydrocarbon exploration and/or development activities. In this paper, the authors tried to apply artificial intelligence (AI) techniques to estimate outcomes values of particular wireline log data, using available petrophysic data. Two types of AI were selected and these are artificial neural network (ANN), and multiple linear regression (MLR). This research aims to advance our understanding of AI and its application in geology. There are three objectives of this study: (1) to estimate sonic log (DT) and density log (RhoB) using different types of AI (ANN and MLR); (2) to assess the best AI technique that can be used to estimate certain wireline log data; and (3) to compare the estimated wireline log values with the real, recorded values from the subsurface. Findings from this study show that ANN consistently provided a better accuracy percentage compared to MLR when estimating density log (RhoB). While using different set of data and technique, estimation of sonic log (DT) produced different accuracy level. Moreover, crossplot validation of the results show that the results from ANN analysis produced higher trendline reliability (R2) and correlation coefficient (R) than the results from MLR analysis. Comparison of the estimated RhoB and DT log data with the original recorded data shows minor mismatch. This is evident that AI technique can be a reliable solution to estimate particular outcomes of wireline log data, due to limited availability of the original recorded subsurface petrophysic data. It is expected that these findings would provide new insights into the application of AI in geology, and encourage the readers to explore and expand the many possibilities of the application of AI in geology.
Evolution Magmatism of Nagasari Volcano Dieng, Central Java, Indonesia Dwi Fitri Yudiantoro; Intan Paramita Haty; Setia Pambudi; Elisabet Magdalena; Armala Putri; I. Takashima; M. Abdurrachman
Journal of Geoscience, Engineering, Environment, and Technology Vol. 7 No. 4 (2022): JGEET Vol 07 No 04 : December (2022)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2022.7.4.10084

Abstract

Nagasari Volcano, part of the Dieng volcanic complex, is one of the unique volcanoes in Central Java. Around this volcano grow eruption craters, volcanic cones, and pyroclastic flow ridges. There were several 14 eruption centers around Mount Nagasari, so it is necessary to know the development of magmatism evolution. The aims of the research to determine the evolutionary development of magmatism. The methodology used is geological mapping and petrographic analysis. The observations of rocks found in the study area include andesite lava, lapilli-tuff, fallen pyroclastic breccias, and flow pyroclastic breccias. Meanwhile, geological mapping and petrographic observations of volcanic rock samples show that the evolution of magmatism in the study area from the oldest to the youngest is basaltic magma that formed Prau Volcano in the pre-caldera period. On the other hand, magmatism in the post-caldera I period was of the type of pyroxene andesite forming the Gembol to Jimat Volcano group. In contrast, in the post-caldera II period, the hornblende-biotite andesite group formed the Dieng Kulon to Kendil group.
Economic Feasibility Analysis of Fishing Job Operation in Well YS13 Muhammad Ariyon; Bella Santika; Fitrianti
Journal of Geoscience, Engineering, Environment, and Technology Vol. 7 No. 4 (2022): JGEET Vol 07 No 04 : December (2022)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2022.7.4.10190

Abstract

Oil consumption in Indonesia has increased from year to year. However, the increasing demand for oil and natural gas is inversely proportional to oil and gas production, which always declines from year to year. One of the factors causing the decline in production is the well damage. Well YS13 is a well that is damaged in the form of fish in the well. A fishing job is the most appropriate option to solve the problem of the presence of fish in the well because the fish in the well must be removed to continue well production activities or drilling activities. This study aimed to determine the economic feasibility of fishing job activities to be carried out at the YS13 well. The research begins with the preparation of the required data, then calculate the predicted production of the YS13 well with the decline curve method, estimates the cost of the fishing job, and economic fishing time (EFT). And determines the economic feasibility of the fishing job project by calculating profit indicators, namely Net Present Value (NPV), Internal Rate of Return (IRR), and Pay Out Time (POT). The results of calculations using the decline curve method obtained that the total production for 20 months is 4293.52 bbl. The EFT value is 3 days with Ps = 10% and the total cost of fishing is $28.657,70. The economic value of the project with discount rate = 12%, MARR = 12%, NPV = $147.367,20, IRR = 114%, and POT = 1.44. From the results of the calculation of the economic feasibility, the project is considered feasible to be carried out.
Petrography and Geochemistry for Proposal of Geodynamic Model For The Irbiben Granite in Tagragra d’Akka inlier, (western Anti-Atlas, Morocco) Tokpa Kakeu Lionel-Dimitri Boya; Allou Gnanzou; Kouadio Jean Luc Hervé Fossou; Pohn K. Martial Adingra; Dagri David Goulihi; Souad M'Rabet
Journal of Geoscience, Engineering, Environment, and Technology Vol. 7 No. 3 (2022): JGEET Vol 07 No 03 : September (2022)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2022.7.3.10275

Abstract

This study aims to contribute to improve the knowledge on the setting of the Irbiben granites, located south of the gold deposit of this locality (Tagragra d'Akka buttonhole, Anti-Atlas, Morocco). The petrographic characterization showed leucocratic porphyry rocks, with a mineralogy dominated by quartz and phenocrysts of plagioclase, alkali feldspars of sometimes centimetric size as well as very small sulphides of metallic luster. Two generations of quartz have been identified: a QIquartz with undulating extinction phenocrysts testifying to an episode of deformation orchestrated in this inlier, and a QII quartz with more rounded and limpid minerals indicating an intense silicification. Plagioclase and alkali feldspars are deeply altered to sericite and epidote. Geochemical characterization classifies these rocks as calc-alkaline series granites, rich in potassium, with a peraluminous character indicating their crustal origin. Their arc geochemical signature, Ba enrichment, and negative Nb, Ti, and P anomalies are characteristic of a subduction zone. This subduction could be associated with an episode of convergence between an oceanic lithosphere located in the north and the West African craton in the south, as shown by the proposed geodynamic model.
Identification of Potential Geotourism Destination in the River Subayang areas of Kampar, Riau, Indonesia Dwita Martania; Mira Hafizhah Tanjung; Adi Suryadi
Journal of Geoscience, Engineering, Environment, and Technology Vol. 7 No. 4 (2022): JGEET Vol 07 No 04 : December (2022)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2022.7.4.10394

Abstract

The readiness of an area to be able to develop tourism potential as geotourism is seen from various aspects, including the existing geological heritage, as well as the enthusiasm of the local community which is the main focus in creating good geotourism, while the government acts as the main mover. In Kampar Regency, Riau Province, to be precise in the Sushadow River area, the Rimbang Balling area located in the Kampar Kiri Hulu sub-district, there are natural attractions that the Subayang river passes through, in addition to the river being so clear, upstream we can find a stone wall waterfall, possibly having a waterfall. This paper, shows the potential of geotourism froum various aspects of geomorphology and community life, such as economic, social, cultural and infrastructure and discusses the role of society and sectors as tourism actors in subayang river using the RAP-fish method. Geotourism studies can be drawn from various integrations of existing theories, conceptual analyzes and practices of nature-based tourism and closer collaboration with relevant social sciences so that they can play a role in the promotion of tourism among the public and professionals.
The Role of Fractal Micro-Pore to Absorption of Methane Gas, Case Study: Coal of Tanjung Formation, Arang Alus Area, Banjar District, South Kalimantan, Indonesia Sugeng Raharjo; Basuki Rahmad; Ketut Gunawan; Budi Prayitno
Journal of Geoscience, Engineering, Environment, and Technology Vol. 7 No. 4 (2022): JGEET Vol 07 No 04 : December (2022)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2022.7.4.10565

Abstract

The Tanjung Formation is one of the coal bearing formations in the Barito Basin, South Kalimantan. The coal seams in the Tanjung Formation in the Arang Alus area have 4 (four) seams,there are seam A, B, C, and D. The age of these coal seams are Eocene - Oligocene with a thickness between 0.5 - 2 meters. This study aims to determine the characteristics of micropore fractal and methane gas absorption from coal samples taken by channel sampling on exposed coal in the open pit. The method used is SEM analysis, vitrinite reflectance (Ro,max), adsorption isotherm, and fractal calculation. The four coal seams based on vitrinite reflectance values (0.52 %- 0.62 belong to the sub-bituminous rank. Based on the methane gas absorption capacity for coal seam C of 450 SCF/ton while coal seams A, B and D of 308 SCF/ton, 336 SCF/ton and 407 SCF/ton, the fractal pore dimension value in seam coal C = 1.963 is higher than seam coal A = 1.933, B = 1.940 , and D = 1.943. The small size of the fractal pore dimension value caused by the degree of regularity of the micropore distribution in each coal seam methane differences.

Page 35 of 56 | Total Record : 551

 33   34   35   36   37 

Filter by Year

2016 2025


Reset
Filter By Issues
All Issue Vol. 10 No. 02 (2025): JGEET Vol 10 No 02 : June (2025) Vol. 10 No. 3 (2025): JGEET Vol 10 No 03 : September (2025) Vol. 10 No. 1 (2025): JGEET Vol 10 No 01 : March (2025) Vol. 9 No. 04 (2024): JGEET Vol 09 No 04 : December (2024) Vol. 9 No. 3 (2024): JGEET Vol 09 No 03 : September (2024) Vol. 9 No. 2 (2024): JGEET Vol 09 No 02 : June (2024) Vol. 9 No. 1 (2024): JGEET Vol 09 No 01 : March (2024) Vol. 8 No. 4 (2023): JGEET Vol 08 No 04 : December (2023) Vol. 8 No. 3 (2023): JGEET Vol 08 No 03 : September (2023) Vol. 8 No. 2 (2023): JGEET Vol 08 No 02 : June (2023) Vol. 8 No. 1 (2023): JGEET Vol 08 No 01 : March (2023) Vol. 8 No. 02-2 (2023): Special Issue from The 1st International Conference on Upstream Energy Techn Vol. 7 No. 4 (2022): JGEET Vol 07 No 04 : December (2022) Vol. 7 No. 3 (2022): JGEET Vol 07 No 03 : September (2022) Vol. 7 No. 2 (2022): JGEET Vol 07 No 02 : June (2022) Vol. 7 No. 1 (2022): JGEET Vol 07 No 01 : March (2022) Vol. 6 No. 4 (2021): JGEET Vol 06 No 04 : December (2021) Vol. 6 No. 3 (2021): JGEET Vol 06 No 03 : September (2021) Vol. 6 No. 2 (2021): JGEET Vol 06 No 02 : June (2021) Vol. 6 No. 1 (2021): JGEET Vol 06 No 01 : March (2021) Vol. 5 No. 4 (2020): JGEET Vol 05 No 04: December 2020 Vol. 5 No. 3 (2020): JGEET Vol 05 No 03 : September (2020) Vol. 5 No. 2 (2020): JGEET Vol 05 No 02 : June (2020) Vol. 5 No. 1 (2020): JGEET Vol 05 No 01: March 2020 Vol. 4 No. 4 (2019): JGEET Vol 04 No 04: December 2019 Vol. 4 No. 3 (2019): JGEET Vol 04 No 03 : September (2019) Vol. 4 No. 2 (2019): JGEET Vol 04 No 02 : June (2019) Vol 4 No 1 (2019): JGEET Vol 04 No 01 : March (2019) Vol. 4 No. 1 (2019): JGEET Vol 04 No 01 : March (2019) Vol. 4 No. 2-2 (2019): Special Edition (Geology, Geomorphology and Tectonics of India) Vol. 3 No. 4 (2018): JGEET Vol 03 No 04 : December (2018) Vol 3 No 4 (2018): JGEET Vol 03 No 04 : December (2018) Vol 3 No 3 (2018): JGEET Vol 03 No 03 : September (2018) Vol. 3 No. 3 (2018): JGEET Vol 03 No 03 : September (2018) Vol. 3 No. 2 (2018): JGEET Vol 03 No 02 : June (2018) Vol 3 No 2 (2018): JGEET Vol 03 No 02 : June (2018) Vol 3 No 1 (2018): JGEET Vol 03 No 01 : March (2018) Vol. 3 No. 1 (2018): JGEET Vol 03 No 01 : March (2018) Vol. 2 No. 4 (2017): JGEET Vol 02 No 04 : December (2017) Vol 2 No 4 (2017): JGEET Vol 02 No 04 : December (2017) Vol 2 No 3 (2017): JGEET Vol 02 No 03 : September (2017) Vol. 2 No. 3 (2017): JGEET Vol 02 No 03 : September (2017) Vol. 2 No. 2 (2017): JGEET Vol 02 No 02 : June (2017) Vol 2 No 2 (2017): JGEET Vol 02 No 02 : June (2017) Vol 2 No 1 (2017): JGEET Vol 02 No 01 : March (2017) Vol. 2 No. 1 (2017): JGEET Vol 02 No 01 : March (2017) Vol 1 No 1 (2016): JGEET Vol 01 No 01 : December (2016) Vol. 1 No. 1 (2016): JGEET Vol 01 No 01 : December (2016) More Issue