Pemetaan Geologi Struktur Daerah Simpang Tolang Jae Dan Sekitarnya Kecamatan Kotanopan Kabupaten Mandailing Natal Provinsi Sumatera Utara

Manik, Rusman Sere (2021) Pemetaan Geologi Struktur Daerah Simpang Tolang Jae Dan Sekitarnya Kecamatan Kotanopan Kabupaten Mandailing Natal Provinsi Sumatera Utara. Other thesis, Universitas Islam Riau.

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Abstract

Research was conducted in Mandailing Natal Regency, North Sumatra Province which is located at coordinates 0° 37' 30"- 0° 40' 00" South Latitude and 99° 40' 30"- 99° 43' 00"East Longitude. Regionally, Mandailing Natal Regency is located in the mountains of the Bukit Barisan which is a volcanic bus, and the existence of structures in the area is identified. The purpose of this study was to determine the geomorphological unit of the study area, to determine the geological structure that developed in the study area by analyzing ridge straightness data using DEMNAS data and data obtained from previous researchers (Secondary Data), To determine the forces that shape structural patterns and in the research, as well as knowing the tectonic processes that develop in the research area. The method used was secondary data collection from previous geological mapping. The results obtained after the analysis had 5 geomorphological units, 1 flow patterns, 48% of the dominant ridge straightening direction was southeast-northwestt, Interpretation of fault with DEMNAS with result 13 faults, The total number of burly is 14 stations. Fault analysis shows that there are 1 strike-slip sinistral and 1 thrust fault and tectonic phase of stress that work, namely northeast-southwest at the middle Miocene-late miocene.

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