Study of Potential Geosites in Ngarai Sianok - Maninjau Area and Silokek Geopark Area based on UNESCO Assessment Parameters Fakhri Irsyad Anwar (a*), Mirzam Abdurrachman (a), Idham Andri Kurniawan (a), Abdillah Baraas (a), Firman Sauqi Nur Sabila (a), Dian Hardiansyah (a), Fachri Vanrenov (a), Muhammad Bahrun Najah (a), Muhammad Hafizh (a)
Faculty of Earth Sciences and Technology, Bandung Institute of Technology Jalan Ganesha 10, Bandung 40132, Indonesia
*fakhriirsyadanwar[at]gmail.com
Abstract
The Ngarai - Sianok Geopark and the Silokek Geopark are part of the national geopark that will be proposed to become a UNESCO Global Geopark, the locations of these two geoparks are in West Sumatra Province, for the Ngarai Sianok - Maninjau Geopark, namely Agam Regency and Bukittinggi City and for the Silokek Geopark it is in Sijunjung district, this study aims to evaluate several geosites in the Ngarai Sianok - Maninjau Geopark area, including evidence of faults in Sianok Gorge, Tarusan Kamang, Simarasok Ngalau, Lake Maninjau, Lake Maninjau Hot Springs, Sarasah Pontong, and Sungai Sariak Waterfall, Timbulun Waterfall and Blue Lake, based on geological observations and feasibility based on UNESCO standards. The results of this study are recommendations for Geopark areas, especially in geosite locations. This study method uses field geology data and geotourism analysis methods in various places on geosites in these two geopark areas. Field geological data is in the form of geomorphological observations, structural geological observations, and lithological observations. Geoutourism analysis, namely conducting direct observations which are then assessed based on the parameters of the feasibility and readiness of UNESCO geoparks
Geologically, the uniqueness of the Ngarai Sianok - Maninjau Geopark is the Great Sumatran Fault that passes through this geopark area and Lake Maninjau, which is the caldera of Quaternary Mount Sitinjau. The eruption products from Mount Sitinjau can be seen clearly from the Lake Maninjau area, Ngarai Sianok, and even to the east, namely at the Ngalau Simarasok Geosite. The Geological Area of ​-​-the Silokek Geopark is unique in the form of ancient Permian-aged karst rocks raised above tertiary granite rocks that are younger, the karst cave has traces of ancient human remains to colonial civilization, besides that there are manifestations of hot springs originating from Mount Talang and the water of the Seven Levels Waterfall, which empties into the Kuantan River Stem.
Keywords: Ngarai Sianok, Maninjau, Silokek, Geopark, Great Sumatran Fault, UNESCO
