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All Journal Journal of Degraded and Mining Lands Management Jurnal Geosaintek
Muhammad Altin Massinai
Department of Geophysics, Faculty of Mathematics and Natural Sciences, Hasanuddin University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Education

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Penentuan Arah Tegasan Pembentuk Kekar Menggunakan Diagram Rosette (Studi Kasus Daerah Pattongtongan, Sulawesi Selatan) Dewi Ainun Jariah; Ismira Luthfia; Nurita Dwi Puspita S; Muhammad Rexy Syam; Deviana Frindy R; Hanifah Hamdah; Nuraisyiah Pertiwi Kamsir; Muhammad Fazlur Rahman; William Maesalangi; Muhammad Altin Massinai; Muhammad Fawzy Ismullah Massinai
Jurnal Geosaintek Vol 5, No 1 (2019)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (362.506 KB) | DOI: 10.12962/j25023659.v5i1.4925

Abstract

Struktur geologi adalah gambaran bentuk arsitektur batuan penyusunan kerak bumi akibat sedimentasi dan deformasi. Dalam melakukan identifikasi geologi suatu wilayah, salah satu faktor utama yang harus dipertimbangkan adalah struktur geologi, yang umumnya mengacu kepada data-data primer berupa data observasi lapangan maupun data sekunder. Penelitian yang dilakukan di Desa Pattontongan Kecamatan  Mandai  Kabupaten Maros  Sulawesi Selatan ini mengkhususkan pada penentuan arah tegasan utama di daerah tersebut. Penelitian ini menggunakan data lapangan berupa data strike dan data dip. Penentuan arah tegasan dengan analisis kekar menggunakan analisa Diagram Rosette. Hasil yang didapatkan berupa arah tegasan maksimum berarah timur laut-barat daya. Hal ini disebabkan proses pembentukan kekar pada Desa Pattongtongan dipengaruhi proses vulkanisme pada pembentukan Formasi Camba.
Land subsidence assessment on karst based on resistivity and geotechnical parameters Muhammad Altin Massinai; Muhammad Fawzy Ismullah Massinai; Erfan Syamsuddin
Journal of Degraded and Mining Lands Management Vol 10, No 2 (2023)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2023.102.4047

Abstract

Karst is geomorphologically composed of limestone. However, limestone is very susceptible to weathering due to the influence of water, which can cause land subsidence. The resistivity method is often used to determine the potential for land subsidence, while geotechnical methods are commonly considered capable of juxtaposing with resistivity methods to support interpretation accuracy. The current research was conducted to determine the potential for land subsidence in the karst area in Lappae, South Sulawesi, Indonesia. The resistivity method utilizes a dipole-dipole configuration, and the geotechnical parameters used are uniformity coefficient, curvature coefficient, water content, shear angle, and cohesion. The results obtained can be classified into northern and southern areas. The classification of these areas is based on the resistivity results, which show very high resistivity values        (> 4800 Ωm) in the southern part. This value is assumed to be a feature of the cave. Caves are predominantly distributed in the southern part. The five geotechnical parameters show that the northern part, which was composed of massive limestone (150-1600 Ωm), is a stable area, though it is highly prone to landslides. As for the southern part, geotechnical parameters suggest that the presence of caves is the primary factor contributing to the very high potential for landslides in this region. These results indicate that, based on the evaluation of this location, it is not feasible for land use. In addition, in spite of the low cost and rapid methods, the combination of these methods shows good results.
Co-Authors Deviana Frindy R Dewi Ainun Jariah Erfan Syamsuddin Hanifah Hamdah Ismira Luthfia Muhammad Fawzy Ismullah Massinai Muhammad Fazlur Rahman Muhammad Rexy Syam Nuraisyiah Pertiwi Kamsir Nurita Dwi Puspita S William Maesalangi