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Journal of Geoscience, Engineering, Environment, and Technology

JGEET
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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 551 Documents

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Identification and Stratiraphic Position of Mollusk Type Locality at West Progo Stage Hita Pandita; Gendoet Hartono
Journal of Geoscience, Engineering, Environment, and Technology Vol. 4 No. 2 (2019): JGEET Vol 04 No 02 : June (2019)
Publisher : UIR PRESS

The location of the discovery of mollusk fossils on the island of Java is spread in various places. One location is in the Kulon Progo region known as West Progo beds. However, due to the lack of studies of mollusk fossils in the Kulon Progo region, this resulted in a lack of understanding of the location of the discovery. This study was intended to re-record the location of fossil molluscs discovery in the Kulon Progo region, with the aim of contributing to the stratigraphic arrangement in Kulon Progo. Research methods include literature studies, field investigations and laboratory analysis. The literature study includes libraries of the Dutch colonial era regarding the location of the discovery of mollusk fossils. Field studies in the form of stratigraphic measurements and sampling. Laboratory investigations include petrographic observations and identification of micro and macro fossils. The results of the investigation successfully re-identified the Kembang Sokkoh and Spolong locations which are two types of locations on the West Progo beds. Based on the lithological characteristics of the two locations included in the Jonggrangan Formation, with the Lower Miocene age based on an analysis of the fossil content of the molluscs.

Age and Paleobathymetry of Salodik Group in PohPagimana section, East Arm of Sulawesi Based on Foraminiferal Assemblages Rakhmat Fakhruddin; Dedy Kurniadi
Journal of Geoscience, Engineering, Environment, and Technology Vol. 4 No. 1 (2019): JGEET Vol 04 No 01 : March (2019)
Publisher : UIR PRESS

Planktonic and benthic foraminiferal assemblages were used for age and paleobathymetry analysis of outcropping carbonate succession of the Salodik Group in Poh–Pagimana section, East Arm of Sulawesi. Twenty spot samples of carbonate rocks were collected from cut slope along the road between Poh and Pagimana. Age analysis conducted for each sample by its planktonic foraminifera assemblages and group into their age interval. The age range from Early Eocene to Pliocene. Benthic foraminiferal assemblages indicate paleobathymetry ranging from middle shelf to upper bathyal settings. Age analysis of the studied section show an older sediments (Early–Middle Eocene) overlie younger sediment (Early Miocene). This is interpreted as the evidence of thrust fault in the Poh–Pagimana section as part of thrust sheets of Batui thrust complex which imbricated on deformation zone. The youngest sediment which have suffered deformations shown by disordered age sequence is Pliocene in age (N20-21). The Eocene to Pliocene carbonate succession in the studied section was deposited relatively in the more basinward position compared to the carbonate-dominated sediments in the Tomori area which was deposited in the more landward position.

Adaptation to the Climate Change Impact through Community Participation on Customary Land Use Zaflis Zaim; Imam Buchori
Journal of Geoscience, Engineering, Environment, and Technology Vol. 4 No. 2 (2019): JGEET Vol 04 No 02 : June (2019)
Publisher : UIR PRESS

Climate Change and global warming have brought some policy to reduce the impacts by adaptation and mitigation strategies. One adaptation strategy is to increase land use size in agriculture area base on community participation. On the other hand, sustainable development needs cooperation mainly on common investment. The aim of the study is to identify the land utilization process, role model and level of participation on customary land. We use observation and deep interview method to analyze this study. The result shows that the customary land utilization process has realized through public deliberation with local Fig.s. The agriculture programs operated with Wanatani concept or agro-forestry by housewives where multi-level strategy is mutually beneficial. Around 30 housewives have been participating in producing agriculture products, i.e., coffee, milk candy, palm sugar, and ginger powder. The level of participation especially for female farmers at RW 01, which shows a percentage of 16.6%. Generally, community participation has encouraged the gotong-royong model while has to contribute in their time, tools and materials to develop the communal shed. In conclusion, the land tenure system has taken with sharing benefits between local government & farmers. The customary tenure has recognized as one of the tenure systems in Indonesia, especially on Adat land management.

Evaluation of the Hydrocarbon Potentials of Shale Exposures at Okpekpe in Edo North Alexander Ogbamikhumi; Nosa Igbinigie; Ovie Odokuma-Alonge
Journal of Geoscience, Engineering, Environment, and Technology Vol. 4 No. 4 (2019): JGEET Vol 04 No 04: December 2019
Publisher : UIR PRESS

This study evaluates the source rock characteristics of rock exposures along a newly exposed road cut in Okpekpe. An integrated technique of organic geochemical analysis and biostratigraphy evaluation were adopted to determine the source rock quality, Maturation index, kerogen types, depositional environment andsediment age. Results of organic geochemistry gave total organic carbon (TOC) value between 0.81 to 3.04 w.t% (2.08wt.% average) indicative of a good source potentials. The plot of Total Sulphur Content (TSC) against TOC suggests a transitional depositional environment for the samples while the plot of hydrogen index (HI) against oxygen index (OI) shows that the samples are capable of generating mixed type II/III kerogen. Palynological analysis revealed that the basal section of the exposure is characterized by the occurrences of typical and moderately rich Late Cretaceous – Early Tertiary palynomorphs. While the upper section is poorly rich in palynomorph abundance but with spot occurrences. The palynomophs asssemlages is of Late Maastrichtian - Early Paleocene and the outcrop is characterized by the presence of terrestrial pollens and spores indicating a continental to transitional depositional environment, typical of the Mamu Formation of the Anambra Basin.

Geosite Assessments at the Southern Part of Karangbolong Dome: New Insight to Geotourism Potential in Kebumen, Central Java, Indonesia Fadlin; Gentur Waluyo; Yohanes Iwan; Nita Ariyanti; Nanda Ajeng Nurwantari
Journal of Geoscience, Engineering, Environment, and Technology Vol. 5 No. 1 (2020): JGEET Vol 05 No 01: March 2020
Publisher : UIR PRESS

Karangbolong is a morphological dome in Kebumen area, that has a high geological diversity and have a lot of tourism potential, but has not been developed optimally as a geotourism potential based on conservative and educative aspects, especially the existence of ancient volcano of Menganti the quite interesting from a geological point of view, so in this case an inventory of a geological diversity is required. This study aims to understand the geological conditions and conduct an assessment of the feasibility of geodiversity in ancient volcano complex of Menganti. The methodology for this research is a direct observation in the field based on the surface geological mapping, rock sampling for petrology study of rocks for supporting the quantitative assessment of genocide in the research area. The research area has 2 (two) landscape models, ie,ex-volcanic landscape, in this case occupying 95% of the research area and then the karst landscape, occupying 5% of the research area. Stratigraphy of the research area can be divided into 5 units from old to young, that is basaltic lava of Menganti, the pyroclastic flow of Menganti which is interfingering with andesitic lava of Karangduwur, andesite-basalt intrusion unit, and limestone of Agropeni. Based on field investigation, the research area has 27 geosite objects that can be developed as geotourism potential, covering 3 geomorphological sites, 7 lithology sites, 9 cave karst sites, 5 beach sites, and 2 waterfall sites. Based on the results of quantitative assessment of geosites in the research area with accessibility, state of preservation, scientific wort, and educational significance parameters, the research area has a geodiversity index from 19 until 24, in this case, the research area has good until very good grade to be developed as a geotourism potential base on educative and conservative, in order to improve the economic value of local communities. Keywords: Qualitative assessment, geodiversity, geotourism, paleo-volcano, Kebumen.

Determination of Priority Regions as The Direction of Decision-Making for Land Development of West Kalimantan Province Ratih Fitria Putri; Aryana Rachmad Sulistya
Journal of Geoscience, Engineering, Environment, and Technology Vol. 4 No. 3 (2019): JGEET Vol 04 No 03 : September (2019)
Publisher : UIR PRESS

Indonesia is an archipelago country consisting of large and small islands with a large number of approximately 17,508. Some of the islands are among the border to neighboring countries. One of the islands is a border area of land that is found on the island of Borneo, especially West Kalimantan Province. West Kalimantan province is directly adjacent to Malaysia. The identic character of the Indonesian border area is largely a lagging region. Determination of priority areas is certainly needed as an effective way of developing these border areas. The objectives of the research include (1) identification of the distribution of lagging priority areas in West Kalimantan Province, (2) give recommendations related to development of lagging priority areas. Overlays of lagging region parameters and economic productivity are used to determine priority areas. The result of identification is known that Bengkayang Regency, Kayong Utara, and Melawi are the lagging priority areas. Recommendation given to the lagging priority regions are through regional development model and also based on determination of base sector.

Front Matter Vol 04 No 01 2019 JGEET JGEET
Journal of Geoscience, Engineering, Environment, and Technology Vol. 4 No. 1 (2019): JGEET Vol 04 No 01 : March (2019)
Publisher : UIR PRESS

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Front Matter Vol 04 No 01 2019

Back Matter Vol 4 No 01 2019 JGEET JGEET
Journal of Geoscience, Engineering, Environment, and Technology Vol. 4 No. 1 (2019): JGEET Vol 04 No 01 : March (2019)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (792.469 KB)

Back Matter Vol 4 No 01 2019

A Geophysical Survey with Magnetic Method for Interpretation of Iron Ore Deposits in the Eastern Nusawungu Coastal, Cilacap Regency, Central Java, Indonesia Muhammad Sehah; Sukmaji Anom Raharjo; Azmi Risyad
Journal of Geoscience, Engineering, Environment, and Technology Vol. 5 No. 1 (2020): JGEET Vol 05 No 01: March 2020
Publisher : UIR PRESS

Geophysical survey with magnetic method to interpret the iron ore deposits in the Eastern Nusawungu Coastal, Cilacap Regency, Central Java, Indonesia was carried out during six month, i.e. March –August 2017, covering the area in the geographical position of 109.3462° – 109.3718° E and 7.6958° – 7.7098° S. This survey has produced total magnetic field strength data at each measuring point in the research area. The magnetic field strength data which have been obtained, then be processed, corrected, and mapped so that the local magnetic anomaly contour map can be obtained. The local magnetic anomaly contour map shows the distribution of magnetic anomalous sources in the subsurface of research area. The 2D-modeling of magnetic anomalies data has been carried out along the AB trajectory extending on the local magnetic anomaly contour map from the position of A(109.3463°E and 7.7023°S) to B (109.3688°E and 7.7053°S), so that some subsurface anomalous objects is obtained. The modelling results of magnetic anomalies data show that the research area is estimated to have the potential of iron ore deposits. The subsurface rocks deposits containing iron ore are estimated to be located below the AB trajectory with a length about of 164.85 meters, a depth ranging of 1.709 – 31.909 meters, and a magnetic susceptibility value of 0.0122 cgs unit. These rocks are interpreted as sand deposits which coexists with silt and clay containing iron ore grains from the alluvium formation. Further, iron ore is also estimated to be present in the rocks deposits below the AB trajectory which have a depth of 24.405 – 49.809 meters and 3.989 – 11.111 meters, with the magnetic susceptibility values of 0.0093 and 0.0073 cgs units.

The Benefits of Adding Corn Stalk Ash as a Substitution of Some Cement Against of Compressive Strength Concrete Sri Hartati Dewi; Roza Mildawati; Tio Perdana
Journal of Geoscience, Engineering, Environment, and Technology Vol. 4 No. 3 (2019): JGEET Vol 04 No 03 : September (2019)
Publisher : UIR PRESS

Concrete is a very important building material used in the world of construction services, and it is generally known that the good and bad properties of concrete can be seen from its compressive strength. Concrete consists of Portland Cement (PC) or other hydraulic cement, fine aggregates, coarse aggregates, and water, with or without using additional materials. Cement is one of the main mixtures of concrete constituents composed of natural resources such as lime (CaO), Silica (SiO₃), alumina (Al2O₃), little magnesia (MgO), and alkali. Silica is also found in corn. according to (Roesmarkam and Yuwono, 2002) corn plants have a Silica content of 20.6%. This study aims to determine the effect of utilization of corn stalk ash on compressive strength and modulus of elasticity of concrete. Cornstalk ash is used as a partial substitute for cement, with a mixture composition of 2%, 4%, 6%, 8%, and 10%. This study uses SNI 03-2834-2000 for mix design, with the added ingredient of 0.25% sikament NN. Cylindrical test specimen size (150 mm x 300 mm), the specimen was treated and tested at 28 days. Based on research using corn stalk ash 2%, 4%, 6%, 8%, and 10%. either without or using sikament NN the highest compressive strength at 8% is 20.8 Mpa and 20.4 Mpa, and decrease in usage of 10% corn stalk ash which is 18.2 Mpa and 18, 4 Mpa. The highest elastic modulus without or with sikament NN present in 8% ie 21656.14 Mpa and 21607.52 MPa. Modulus of Elasticity value decreased in the use of corn stalks 10% ash is 20366.28 Mpa and 20569.59 MPa. Based on the research, corn stalk ash can replace the role of part of cement in construction using corn stalk ash 8%.

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Adi Suryadi

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+62822 8389 6947

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jgeet@journal.uir.ac.id

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Jl. Kaharuddin Nasution No 113 Perhentian Marpoyan, Pekanbaru, Riau 28284

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Riau

INDONESIA

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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

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

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