TY - CONF T2 - JOINT CONVENTION YOGYAKARTA 2019, HAGI ? IAGI ? IAFMI- IATMI (JCY 2019) TBA M2 - Tentrem Hotel Y1 - 2019/11/25/ ID - ITNYREPOID2577 UR - https://itny.ac.id TI - THE GEOLOGIC IMPORTANCE OF WEST PROGO MOUNTAIN IN THE REFERENCE TO THE NEWLY ESTABLISHED INTERNATIONAL AIRPORT IN WATES, SPECIAL PROVINCE OF YOGYAKARTA, INDONESIA KW - New International Yogyakarta Airport KW - hinterland KW - umdulated topography KW - water resources KW - building materials AV - public N2 - Abstract West Progo Mountain becomes hinterland to the newly developed area as the impact of the establishment of the New International Airport of Yogyakarta. The eastern foot of the mountain is built up by an undulated topography of Sentolo Formation which is underlain by the Quaternary Merapi volcanic deposits forming a large fan. The newly established airport is located in the distal facies at the toe of Merapi fan in the transition to the coastal alluvial deposit in Temon area, Wates. The undulated topography of Sentolo Formation located NW of the airport is an ideal area for urban development. This area covers a distance of about 20 kilometers from the airport to the foot of West Progo Mountain. The The gentle slope of the undulated topography is suitable for the runoff management avoiding the possibility of flash flood. Furthermore, the slope is relatively stable avoiding the possibility of landslides. Water potentials are readily available in Jonggrangan Formation located at the top of West Progo Mountain (Listyani, 2019). The water resources drain all over the year. The karst topography of Jonggrangan Formation provides space for underground reservoir. Water for industrial porpose might be available from Progo River. In addition some springs are found in the lithologic contact between Old Andesit Formation of West Progo and the younger deposits. Underground water might be found at the alternating layers between limestone and marly sandstone. Sentolo limestone consisting of hard coral reef and stratified limestone readily provides strong foundation for the development of infrastructure. The thickness of the rock is about 950 meters (Rahardjo, 1995 in Pambudi, 2019). The limestone might also potentials for building materials and cement. In places the limestone quarries are dug by the locals. Keywords: New International Yogyakarta Airport, hinterland, umdulated topography, water resources, building materials A1 - Hill Gendoet Hartono, . A1 - Hita Pandita, . A1 - Ev. Budiadi, . A1 - Adjat Sudradjat, . ER -