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All Journal Jurnal Ilmiah Teknik Industri KURVATEK Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII Jurnal Ilmiah Geologi pangea
Amara Nugraheni
Institut Teknologi Nasional Yogyakarta
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation

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Journal : KURVATEK

 1 
PALEOMORFOGENESIS BENTANG ALAM KOMPLEKS GUNUNG IJO, KULONPROGO Rr. Amara Nugrahini; Hill Gendoet Hartono; T. Listyani R.A.
KURVATEK Vol 5 No 2 (2020): November 2020
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v5i2.1831

Abstract

Geomorphological studies of the Mt. Ijo complex area need to be done to understand the geomorphology of the past. The purpose of the study was to identify geomorphological characteristics in order to gain an understanding of Mt. Ijo's paleomorphogenesis. The research was conducted using geomorphological observation methods in the field and assisted by rock petrographic analysis. Mt. Ijo is an old volcano that forms the West Progo Hills. The Mt. Ijo complex is composed of a predominance of igneous and volcanic rocks in the form of coherent lava and pyroclastic, in addition to sedimentary rocks in the form of limestone. The Mt. Ijo complex forms the remains of an ancient volcano. The remaining morphology is interpreted as part of the ancient volcanic body in the central and proximal facies.Keywords: Mt. Ijo, paleomorphogenesis, volcanic facies, remaining landform
KARAKTERISTIK BATUAN ASAL (BEDROCK) PEMBENTUKAN NIKEL LATERIT PADA DAERAH X DAN SEKITARNYA KABUPATEN MOROWALI UTARA SULAWESI TENGAH Andarias Biney; Amara Nugraheni; Herning Dyah Kusuma Wijayanti
KURVATEK Vol 7 No 2 (2022): Energy Management and Sustainable Environment
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v7i2.3166

Abstract

Abstract Administratively, the research area is included in North Morowali Regency, Central Sulawesi Province, Central Java Province, which is in the 49 S zone with UTM (Universal Transverse Mercator) coordinates 9152800 – 9152800 400800 - 406800 mE with an area of ​​± 54 km2 (9 km x 6 km). ). One of the factors that influence the formation of laterite nickel deposits is the source rock. The purpose of this research is to focus on the characteristics of the original rock, namely ultramafic rock based on the intensity of serpentinization, its constituent minerals, and its relation to the laterization potential of nickel deposits in area X and its surroundings, North Morowali Regency, Central Sulawesi. The research method used is literature study, field activities (surface mapping), data processing (laboratory analysis and studio analysis), and report generation. Based on megascopic data, the research area consists of three units, namely alluvial units, peridotite rock units and limestone units. Based on petrographic analysis, the characteristics of the original rock in 10 rock samples were dominated by dunite and followed by serpentinized dunite, harzburgite, lerzolite, wehrlite, and serpentinite. The main mineral compositions in the rock are olivine, clinopyroxene, orthopyroxene, and group serpentine (antigorite, lizardite and talc). Laterite distribution in the research area is dominated by rocky laterite and laterite, with the prospect area being in the eastern part of the study area. The distribution of serpentinization zones based on the intensity level of serpentine minerals in the rock, found in the western hills is dominated by very low-medium serpentinization, while the eastern hills are dominated by low-high serpentinization. Key words : Origin Rock, Laterite, North Morowali, Petrography, Serpentinization
Co-Authors Andarias Biney Bagus Ugra Wijaya Hadi Prayoga Herning Dyah Kusuma Wijayanti Hill Gendoet Hartono Oky Verdiansyah R. Bagus Ugra W T. Listyani R.A. Tania Winarti Winarti