Article Per Year (5 Year)
p-Index From 2020 - 2025
0.408
P-Index
This Author published in this journals
All Journal Journal of Applied Sciences, Management and Engineering Technology (JASMET) Journal of Sciencce Technology and Visual Culture
Yogi Adi Prasetya
Institut Teknologi Sumatera
Arts Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Petrology and Geochemical Comparation of Pumice and Scoria Rocks of Slamet Volcano, Central Java Yogi Adi Prasetya; Atsushi Toramaru
Journal of Applied Sciences, Management and Engineering Technology Vol 3, No 1 (2022)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2022.v3i1.2954

Abstract

Slamet Volcano is one of Indonesia Quaternary Stratovolcanoes in Central Java Province. Slamet volcano is divided into two parts, Old Slamet in the western part and Young Slamet. The author examined a comparation data of pyroclastic rock of Slamet Volcano, the pyroclastic rocks are pumice from Old Slamet, the scoria fall, and scoria cones are from Young Slamet. They have different geochemical and petrology features, pumice rock has higher SiO2 from 60 to 64 wt.%, scoria fall has SiO2 49.81 to 50.56 wt. %, and scoria cone has SiO2 49.26 wt. %. Petrographic observation showed that pumice is vesicular and contains of phenocryst pyroxene, plagioclase and biotite, scoria fall, and scoria cones have similar petrographic characteristic they have phenocryst of plagioclase, olivine, and pyroxene with hyalopilitic texture. The contrast of major element combined with petrographic features suggest that pyroclastic rock in Slamet Volcano formed by different magma and the magma has differentiation process of Slamet magma is generally caused by magma mixing.
Jejak Gunung Api Purba di Kota Bandar Lampung, Berdasarkan Analisis Petrologi dan Geomorfologi Yogi Adi Prasetya; Rinaldi Ikhrama
Journal of Science, Technology, and Visual Culture Vol 2 No 1 (2022): Maret 2022
Publisher : Jurusan Teknologi Produksi dan Industri, Institut Teknologi Sumatera

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Kota Bandar Lampung adalah ibu kota Provinsi Lampung yang terletak di pesisir Teluk Betung, di tengah Kota Bandar Lampung terdapat perbukitan yang sangat menonjol keberadaannya jika dibandingkan dengan wilayah sekitarnya. Dengan menggunakan metode geomorfologi menggunakan citra satelit SRTM DEM, Kemiringan lereng bukit-bukit ini berkisar dari agak curam hingga sangat curam perbedaan ketinggian sekitar 25-100 meter dan kemiringan agak curam hingga terjal. Pada observasi lapangan didapatkan bukit-bukit tersebut tersusun oleh batuan piroklastik dengan struktur kekar kolom dengan warna cerah dan lapisan gelas vulkanik dan batu beku intrusi berupa intrusi andesit. Dari sayatan petrografi dapat dilihat jika batuan piroklastik pada daerah penelitian tersusun oleh mineral plagioklas, potasium feldspar, hornbenda. Pada intrusi andesit tersusun oleh mineral plagioklas dan piroksen. Bukti-bukti di lapangan dan laboratorium membuktikan bahwa bukit-bukit yang berada di tengah Kota Bandar Lampung adalah sisa dari gunung api purba yang sudah mati dan tidak aktif lagi.
Co-Authors Atsushi Toramaru Rinaldi Ikhram