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INDONESIA
Journal of Geosciences and Applied Geology
Published by Universitas Padjadjaran
ISSN : 25793136     EISSN : 25793136     DOI : https://doi.org/10.24198/gsag.v7i3
Core Subject : Science, Engineering,
Earth & Planetary Sciences Engineering
Journal of Geological Sciences and Applied Geology (GSAG) is a National multidisiplinary Journal focus on Geological Sciences, Applied Geology, and Geological Engineering and Earth Science. Our Mission is to publish research related to (but not limited) Geology Petrology Paleontology Stratigraphy Sedimentology Remote Sensing Geomorphology GIS Engineering Geology Geotechnics Geochemistry Geophysics Geological Hazard and Disaster Geopark Hazard Mitigation Geography Earth Sciences
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Geologi
Articles 4 Documents
 1 
Search results for , issue "Vol 6, No 1 (2022): Journal of Geological Science and Applied Geology" : 4 Documents clear
CORRELATION DEGREE SERPENTINIZATION OF SOURCE ROCK TO LATERITE NICKEL VALUE THE SAPROLITE ZONE IN PB 5, KONAWE REGENCY, SOUTHEAST SULAWESI Wisnu Indra Bahtiar; Aton Patonah; Mega Fatimah Rosana
Journal of Geological Sciences and Applied Geology Vol 6, No 1 (2022): 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.v6i1.45211

Abstract

The PB5 study area, Konawe district, Southeast Sulawesi is a mining area included in the IUP of PT Sulawesi Cahaya Mineral which is dominated by serpentinized ultramafic rocks. Geological mapping, drilling data, petrographic analysis, X-Ray Fluorescence (XRF), and magnetic susceptibility are used to identify the characteristics of serpentine minerals, characteristics of serpentinization levels, and the correlation of serpentinization levels to nickel laterite levels in the study area. The serpentine mineral types in the study area are lizardite, chrysotile, and antigorite resulting from the alteration of olivine and pyroxene minerals. Lizardite is characterized by mesh, bastite, and hourglass textures. Chrysotile is characterized by filamentous textures and antigorite is characterized by interpenetrating and interlocking textures. The serpentined rocks are predominantly low serpentine with the mesh and bastite textures of the lizardite characterizing the early mineral alteration processes of olivine and pyroxene. Antigorite begins to be present in rocks that experience medium-high serpentinization levels and indicates that antigorite is the result of a high-intensity serpentinization process.  The serpentinization level of the study area is divided into 3 (three) types, namely (1) low serpentinization characterized by the serpentine distribution of 0%-39%, LOI <7%, and magnetic value of 0o-5o, (2) medium serpentinization with the serpentine distribution of 40%-59%, LOI 7-10%, and magnetism value of 5o-10o, and (3) high serpentinization characterized by the distribution of 60%-100%, LOI >10%, and magnetism value >10o. Rocks that experience low serpentinization and medium serpentinization levels have a fairly good nickel content development with Ni concentration factors of 5.13 units and 4.34 units. While rocks that experience a high level of serpentinization have poor nickel development with a Ni concentration factor of 2.43 ppm. 
MANAGEMENT OF THE BATUR GEOPARK AS GEOLOGICAL CONSERVATION BASIS Sapari Dwi Hadian; Bombom Rachmat Suganda; Cecep Yandri Sunarie; Mochamad Nursiyam Barkah; Teuku Yan W M Iskandarsyah; Ratu Bulqiah Ulfa; Ayu Krishna Yuliawati; Kurnia Arfiansyah
Journal of Geological Sciences and Applied Geology Vol 6, No 1 (2022): 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.v6i1.45208

Abstract

The Batur Caldera is located in Kintamani District, Bangli Regency, Bali Province. The coordinates are 8 0 14.30' South Latitude, 115 0 22.30 East Longitude. The closest city distance is Bangli. The Batur Caldera contains the Batur Volcano and to the right is Lake Batur. Around it, in accordance with the beliefs of the local community, there are many temples, such as Besakih Temple and Pasar Agung Temple.Indonesia's success in making the Batur Caldera a Geopark recognized by UNESCO, thanks to the hard work of the Bangli Bali Regent/Pemda, Kemenparekraf, ESDM Geology Agency. In an effort to promote themselves and improve the quality of Batur Caldera geopark tourist destinations.Indonesia's wealth consisting of flora, fauna, cultural diversity, is a tourism asset that Indonesia already has that is able to realize love for national diversity as well as national unity. In addition, geological heritage (geoheritage) and sustainable geological diversity are the beginning of a geological park (geopark) towards nature-based tourism activities (geotourism). Geopark is the protection of cultural and natural heritage by emphasizing the potential between socio-economic and cultural development and the preservation of the natural environment. Geotourism as an earth heritage contains geological sites, which can produce science, scarcity, beauty, and education. Referring to conservation, education, and local economic growth.In realizing Geotourism in Indonesia, it is necessary to have the role of Tourism Stakeholders, namely a group of tourism actors who are responsible for implementing tourism that is responsible for preserving nature and is sustainable, including the Central Government, Regional Government, Private sector, and the Indonesian Tourism Promotion Agency.The government is supervised by the Ministry of Tourism and Creative Economy which is handed over to the Culture and Tourism Office in each region in the development of infrastructure, policies, regulations and promotions. In addition, the Geology Agency, as an institution that carries out geological conservation efforts in the context of sustainable development, is planning and preparing to organize the Geotourism. Besides that, there is the role of the community, several expert institutions in their fields to empower the community to be able to participate in the geotourism industry. Keyword : Geopark, Geotourism, Stakeholders, Batur Caldera
GEOLOGICAL STRUCTURE OF CITUNDUN AND SURROUNDING CIWARU DISTRICT, KUNINGAN REGENCY, WEST JAVA PROVINCE Kurnia Arfiansyah; MUHAMAD ICHSAN; Aton Patonah
Journal of Geological Sciences and Applied Geology Vol 6, No 1 (2022): 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.v6i1.45212

Abstract

Based on the Regional Geological Map of the Majenang sheet (Kastowo and Suwarna, 1996), the study area is part of the Halang Formation and the Bogor Zone (Van Bemmelen, 1949). Research conducted using the geological mapping method shows that the Citundun area and its surroundings have complex geological and tectonic structural conditions.The geological structures that develop are folds, joints and faults. The fold structure in the study area occurs during the Miocene – Pliocene transition with the main axis of the fold trending relatively northwest – southeast where from north to south, namely the Karangkancana Anticline, Kaduagung Syncline, Kaduagung Anticline, Cipari Syncline, Cipari Anticline, Sagara Syncline, Sagara Anticline, Jabranti Syncline, and Jabranti Anticline.Based on joint processing data and structural lineaments, the lineament results trending northwest-southeast and southwest-northeast. Joint structures are found in carbonate sandstones and carbonate claystones with hard and rather hard levels of hardness. In the study area, there are two strike slip fault structures, namely Sagara Sinistral Strike Slip Fault and Cipari Dextral Strike Slip Fault which are trending northeast-southwest. From the results of joint data analysis, a fault indication was withdrawn because the distribution of joint directions was supportive. Based on the regional tectonic age of West Java, during the Miocene - Pliocene the fault in the study area occurred after deposition of sandstone unit (Sbpn), carbonate claystone unit (Sblk) and carbonate sandstone unit (Sbpk) so that this fault structure is interpreted to be Pliocene in age. Referring to the concept of Moody and Hill (1956), the faults in the study area are strike slip faults of the first and second order.Keywords: Citundun, Geological Structure, Syncline, Anticline, Strike Slip Fault.
Tectonic Activity Response Based on Geomorphic Index In Pasirmunjul, Sukatani, Purwakarta Regency, West Java Alif Pradifta; Ismawan Ismawan; Aldrin Ramadian
Journal of Geological Sciences and Applied Geology Vol 6, No 1 (2022): 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.v6i1.45227

Abstract

The study area administratively located in Sukatani sub-district, Purwakarta Regency, West Java. This study is aim to determine the level of tectonic activity in the study area using a quantitative geomorphological approach. The geomorphic indices that used in this research are the Mountain Front Sinusity (SMF), Ratio of valley floor width to valley height (Vf), Hipsometric Integral (HI), Drainage Basin Shape (BS), and Asymmetry Factor (AF). Then, these parameters of geomorphic index, are included in the calculation of the Relative Tectonic Activity Index (IATR) which is show the distribution of tectonic activity levels in the study area. The results of the analysis Relative Tectonic Activity Index (IATR) show that the study area is divided into 3 classes of tectonic activity, namely class 2 (high), class 3 (medium), and class 4 (low). Class 2 occupies about 19.5% of the study area with an area of 7.6 km2 which is spread over the western part of the study area. Class 3 occupies about 79.8% of the study area with an area of 31.4 km2 which is spread dominantly in the study area. While class 4 (low), which occupies about 0.7% of the study area with an area of 0.28 km2 which is spread in the northern part of the research area. In general, the study area has a fairly balanced between level of tectonic activity with an erosion activity, but in the western part of the study area tended to be more dominated with tectonic activity than the erosion activity, which was indicated due to the influence of the structure in the area and caused a catastrophic ground motion in surrounding area.

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