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All Journal J SIG (Jurnal Sains Informasi Geografi) Jurnal Azimut
Fauzul Chaidir A. Usman
Universitas Negeri Gorontalo
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Energy Environmental Science Social Sciences

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GEOLOGICAL STRUCTURE ANALYSIS FOR POTENTIAL LANDSLIDE DISASTER AND MITIGATION AT TANJUNG KERAMAT AREA, GORONTALO Intan Noviantari Manyoe; Fauzul Chaidir A. Usman; Ivan Taslim; Mohamad Mokoginta; Siti Suhartini S. Napu; Tedy Harianto Salama; Muhammad Ridho Kayambo
Jurnal Sains Informasi Geografi Vol 3, No 1 (2020): Edisi Mei
Publisher : Universitas Muhammadiyah Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (743.296 KB) | DOI: 10.31314/jsig.v3i1.543

Abstract

Geological structures in the form of joints and faults have big role in landslide disaster. This study aims to analyze the geological structures using stereographic analysis and rosette diagrams and determine the potential landslides that can occur in the research location in order to identify landslide mitigation efforts in the research area. The method used in this research is field observations then followed by stereographic analysis and rosette diagrams, which are one of the diagrams of the presentation of orientation of the geological structures elements. The results showed that the mechanism of landslide mostly caused by the geological structures distribution in the Tanjung Keramat area, especially by joint distribution. Tension joints dominant direction relatively west as well as the slope direction. Stereographic analysis of the shear joints show the type of extensional stress directing relatively North-South. Potential types of landslide that can occur are wedge failures. Appropriate mitigation efforts are by reducing the slope angle and making structural retaining walls to withstand natural slopes and heaps high enough.
ANALISIS STRUKTUR GEOLOGI DAERAH LEATO SELATAN DAN SEKITARNYA, KECAMATAN DUMBO RAYA, KOTA GORONTALO Ratna Sari Madusila; Nurhajidah Muhsin; Intan Noviantari Manyoe; Ivan Taslim; Emi Prasetyawati Umar; Anggun Farwati Abdullah; Fauzul Chaidir A. Usman
Jurnal Azimut Vol 3 No 01 (2020): Volume 3 No. 01
Publisher : Universitas Tamansiswa Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (750.279 KB) | DOI: 10.31317/jaz.v3i01.490

Abstract

The research area is located in South Leato, Dumbo Raya District, Gorontalo City. The research area is consist of Bone Diorite Formation which is in the miocene and the Pinogu Volcano Rock Formation which is in the quarter. The geological structure of the study area recorded in different rock formations is very interesting to be studied. The purpose of this study is to identify the types and general directions of geological structures that control the stress regime in the study area. This research method is in the form of field data collection and studio analysis. Data is collected by the field survey method. Analysis studio in the fracture processing data. Based on observations in the field, the geological structure contained in the study area is controlled by fracture. The type of fracture in the field is shear fracture. The results of the reconstruction of shear fracture in the study area is relatively northwest-southeast and north-south main direction.
Co-Authors Anggun Farwati Abdullah Intan Noviantari Manyoe Ivan Taslim Mohamad Mokoginta Muhammad Ridho Kayambo Nurhajidah Muhsin Prasetyawati Umar, Emi Ratna Sari Madusila Siti Suhartini S. Napu Tedy Harianto Salama