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All Journal J SIG (Jurnal Sains Informasi Geografi) Jurnal Azimut
Tedy Harianto Salama
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.
ASESMEN NILAI-NILAI PARIWISATA TERHADAP FITUR GEOLOGI DAERAH BONGO DAN SEKITARNYA SEBAGAI DASAR PENGEMBANGAN GEOWISATA DI PESISIR SELATAN GORONTALO Yasin Septian; Wa Ode Emiria Srikandi Ndangi; Intan Noviantari Manyoe; Ivan Taslim; Emi Prasetyawati Umar; Tedy Harianto Salama; Siti Suhartini Napu
Jurnal Azimut Vol 2 No 2 (2019): Desember 2019
Publisher : Universitas Tamansiswa Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1135.256 KB) | DOI: 10.31317/jaz.v2i2.489

Abstract

Geology is an important aspect in the development of tourism in an area. One of the attractions in a natural tourism location is certainly highly controlled by the geological setting in the area. The purpose of this research is to assess tourism values of geological features in the Bongo and surrounding areas as a basis for developing geotourism on the southern coast of Gorontalo. The research location is at coordinates N 00029’42” - N 00029’51” and E 12301’26” - E 12303’32”. The method used in this study is a surface geological survey, which includes field data collection in the form of lithology, geological structure and geomorphology. The standard used for assessing tourism values is the technical guide for assessing geological heritage resources by the Geological Survey Center. The results showed that the lithology unit of the study area consists of granite, volcanic breccia and reef limestone. The geological structure in the research area is shear fracture with main stress that relatively directed to northwest-southeast. The geomorphic unit of the study area consisted of two units, namely volcanic hills, and marine units. The results of the assessment of tourism values on geological features explain that the Bongo and surrounding areas are included in the medium category. Improvements are needed on low value criteria, namely vulnerability, relationships with other values, and economic level.
Co-Authors Fauzul Chaidir A. Usman Intan Noviantari Manyoe Ivan Taslim Mohamad Mokoginta Muhammad Ridho Kayambo Prasetyawati Umar, Emi Siti Suhartini Napu Siti Suhartini S. Napu Wa Ode Emiria Srikandi Ndangi Yasin Septian