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Potensi Tanah Longsor Berdasarkan Karakteristik Batuan dan Geometri Lereng di Jalan Lingkar Barat Kota Palopo: Potential of Landslide Based on Rock Characteristics and Slope Geometry on the West Ring Road of Palopo City Gawing, Erin Savitri; Azikin, Busthan; Husain, Ratna
Jurnal Ecosolum Vol. 12 No. 1 (2023): JUNI
Publisher : Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ecosolum.v12i1.26728

Abstract

The Palopo City West Ring Road is included in the Malili Sheet which is in Salobulo Village, Wara Utara District, South Sulawesi Province with coordinates 2º59'32.10” - 2º58'41.10”S and 120º10'34.51” - 120º10'40 .49” East. This study aims to determine the potential for landslides based on rock characteristics and slope geometry using the exploratory method, namely conducting research directly in the field and laboratory testing. Data acquisition was carried out at 5 observation stations which indicated the potential for landslides to occur. The data obtained are rock characteristic data including, rock type, fresh color and weathered rock color, rock texture and rock structure, as well as sampling, while the slope geometry data collection includes, height and slope of the slope, as well as observing other supporting factors namely, the degree of weathering, the presence of joints, surface runoff and the condition of the land vegetation.The results of data analysis show that the Palopo City West Ring Road has the potential for landslides which are influenced by several causal factors, namely, the steep slope of the slope, dominated by basalt rock which has undergone a weathering process with a high level of weathering at stations 2, 4 and 5 and the level of weathering moderate at stations 1 and 3. In addition, the presence of joints at stations 1 and 2 is a supporting factor for the potential for landslides to occur at the study site.
Maindam Stability Analysis of Retarding Basin TR-01 Flood Control Project Das Sanggai 1A Advanced KIPP IKN Region East Kalimantan Husain, Sayid Agil; Azikin, Busthan
Journal of Geology and Exploration Vol. 4 No. 1 (2025): Journal of Geology and Exploration, June 2025
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jge.v4i1.191

Abstract

Infrastructure development on KIPP-IKN East Kalimantan area faces challenges such as flooding and unavailability of raw water. To address these issues, a Retarding basin is being built to address these issues. However, the engineering geological conditions on the basin and surrounding area can vary significantly, impacting the construction process. Further research is needed to understand these conditions and safety factors for slope stability and seepage in the main dam building. The research method used is the surface and subsurface geological mapping method to analyze engineering geological conditions as well as simulating the stability of the main dam using data from laboratory analysis. The research area consists of residual soil classified as Class D and mudstone as Class Middle, with fair-poor quality rocks. Slope stability simulations show that the area meets minimum requirements and is safe from landslides. Additionally, seepage stability simulations show that the TR-01 retarding basin's seepage discharge is below maximum permitted discharge requirements and is included in the safe category.
Geology and Geochemistry of Batuan Gunungapi Walimbong Formation Balepe Area Tana Toraja Regency South Sulawesi Province Idham, Virly Fakhriyah Uzdah; Azikin, Busthan; Tonggiroh, Adi
Journal of Geology and Exploration Vol. 4 No. 1 (2025): Journal of Geology and Exploration, June 2025
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jge.v4i1.195

Abstract

The study area is located in the Regional Geological Sheet of Majene and Western Palopo, precisely administratively, the research location is located in the Balepe Area, Malimbong Balepe District, Tana Toraja Regency, South Sulawesi Province and astronomically located at the coordinates 119°39'20' 'E - 119°43'20'' E (East Longitude) and 03°03'25'' S - 03°06'25'' S (South Latitude). The purpose of the study was to find out the type and affinity of magma, the naming of rocks based on chemical composition, and the evolution of magma in the study area. The methods used are field observations and data collection, petrographic analysis, and geochemistry using XRF (X-Ray Fluorescence spectrometry). The data was processed using GCDKIT Software. Based on the results of geochemical analysis on the four rock samples, the rock types were based on Total Alkaline Silica (TAS), namely trachy basalt, basalt, rhyolite, and dacite with magma affinity, namely Shoshonite Series and High-K calc-alkaline Series. Petrographic analysis in the form of naming rocks using the Pettijohn (1975) classification, namely lithic tuff, crystal vitric tuff, vitric crystal tuff, and vitric crystal tuff. The evolution of magma in the study area in the diagram of the variation of the content of major elements against SiO2 compounds shows that some of the main elements are systematically differentiated and some are not systematic.
Geology and Geochemical Characteristics of Residual Soil From Tuff as Raw Material for Industry in Paccarammengan Area, Ujung Loe District, Bulukumba Regency, South Sulawesi Province Fazry Parimajeng; Azikin, Busthan
Journal of Geology and Exploration Vol. 4 No. 1 (2025): Journal of Geology and Exploration, June 2025
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jge.v4i1.227

Abstract

The research area is administratively included in the Paccarammangan Area, Ujung Loe District, Bulukumba Regency, South Sulawesi Province. The purpose of this study was to conduct a study of the geochemical characteristics of rocks and residual soil from tuff in order to obtain geology regarding the characteristics of rocks and residual soil information from tuff and its use as industrial raw materials. This study was conducted using geological surface mapping methods and laboratory analysis in the form of petrographic analysis and X-Ray Fluorescence (XRF) on 4 rock samples at stations 8, 15, 16, and 48. From the results of petrographic analysis, tuff in the Walanae Formation mostly comes from intermediate-ultrabasic magma series based on its mineral composition. From the results of geochemical analysis, tuff in the Walanae Formation has a positive and negative correlation to SiO2 and the nature of its magma is intermediate-ultrabasic. Based on the naming of rocks, station 8 has a trachy basalt composition, stations 15, 16 have a basaltic andesite composition, and station 48 has a basanite composition. The use of the remaining tuff soil in the research area is suitable for use as bricks, roof tiles and fine pottery.