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Morfotektonik pada Gunung Parang Melalui Pendekatan Geomorfologi Tektonik Digital, Daerah Karangsambung Ghufrani, Poppy; Soesilo, Joko
OPHIOLITE: Jurnal Geologi Terapan Vol 6 No 1 (2024): APRIL 2024
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56099/ophi.v6i1.p19-28

Abstract

Mount Parang is a sill intrusion formed as partial melting due to tectonic activity namely subduction in Miocene which then broke through the Karangsambung formation and revealed to the surface as Mount Parang. Apart from the Mount Parang intrusion, the result of tectonic activity at that time is hills morphology with landforms in the form of anticline and syncline fold structures that stretch from east to west of the Karangsambung area. The geomorphological approach aims to determine the level of tectonic activity based on morphotectonic analysis around the Mount Parang intrusion. Morphotectonic analysis is conducted through a quantitative approach, by measuring and calculating geomorphic index variables using mathematical formulas. The index variables analysed include hypsometric integral (Hi), basin watershed asymmetry (AF), stream gradient-length index (SL), ratio of valley floor width to valley height (Vf), and mountain front sinuosity (Smf). Based on calculation Hi has a value of 1.0 with SL covering three classes. The AF index has a value of >50 with Vf values is between 0.26 and 0.87 and Smf values between 1.3 and 2.7. Based on these values, it indicates that the area around the Mount Parang intrusion has high tectonic activity.
Barriers to Indonesia's Energy Transition Loy, Nikolaus; Rachmawati, Iva -; Issundari, Sri; Soesilo, Joko
The Indonesian Journal of Planning and Development Vol 9, No 2 (2024): October 2024
Publisher : Department of Urban and Regional Planning, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijpd.9.2.1-13

Abstract

Considering the energy situation, which can no longer depend entirely on fossil energy, the energy transition is the responsibility of all countries. Indonesia has set a target for renewable technology in 2025 of 23%. However, the share of renewable energy in Indonesia's primary electricity generation will decrease to 10.4% in 2022. This figure further distances the renewable energy mix target and raises doubts among policymakers and energy academics. This article aims to determine the factors that influence the slow energy transition in Indonesia from fossil energy to renewable energy. This article is qualitative research using in-depth interview methods and documentary studies. In-depth interviews were conducted with several technocrats and bureaucrats to find out their views regarding the condition of alternative energy and Indonesia's unpreparedness to the energy transition. Qualitative research shows that the lack of energy justice in policies related to the energy transition causes the slow energy transition. First, complicated bureaucracy and overlapping or contradictory regulations cause procedural justice issues. Second, the unfulfilled distributive justice has led to losses due to policies related to renewable energy for several parties. Third, the country's failure to prioritize the environment caused the unfulfilled restorative justice. Fourth, top-down policymaking led to the field of recognition justice. Fifth, cosmopolitanism justice has yet to be fulfilled because Indonesia has not been able to become a global actor in the issue of renewable energy.
Stereographic for Development of Stricture Pattern of Geological Alteration Zone in Atauro Island, Timor-Leste Gomes, Nazario; Sutarto, Sutarto; Soesilo, Joko; Purwanto, Heru Sigit; Christophe, James
Asian Journal of Social and Humanities Vol. 2 No. 6 (2024): Asian Journal of Social and Humanities
Publisher : Pelopor Publikasi Akademika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59888/ajosh.v2i6.274

Abstract

The geological structural patterns and hydrothermal alteration zones of Atauro Island, Timor-Leste, which are influenced by the collision mechanism between the Banda Arc and the Australian Continent, are the subject of this study. The study identifies fault types and alteration zones through stereographic analysis. It indicates the possibility of mineralization in the area. Four alteration zones were identified in this study: argillic, Propylitic, calcosite, and geotite. The analysis results show that left-striking and normal faulting were essential in forming these zones. The mineralization zones, mainly chalcopyrite and chalcocite, are related to the north-northeast trending left horizontal Fault. In addition, this study suggests additional research that includes mineralogy, geochemical, and geophysical analyses to understand more about the characteristics of hydrothermal alteration zones and possible mineralization on Atauro Island. The results of this study are expected to improve our understanding of mineral resources in the region, and it is suggested that this information be considered by authorities responsible for the management of potential natural resources on Atauro Island, Timor.