The Upper Kutei Basin covers the upper drainage basin of the Mahakam, Barito, Sangata and Bungalon River, East Kalimantan. It is bounded by to the west by Kuching high, to the north by Mangkalihat, to the south by Cross Barito High, and to the east by Samarinda Anticlinorium’s. Meanwhile, South Upper Kutei Basin covers upper Mahakam River and Upper Barito River. Phase Array type L-band Synthetic Aperture Radar (PALSAR) is active mode satellite imagery data which use L band (1.27GHz). It is all weather observation regardless of day or night. PALSAR system records both amplitude and phase of the backscattered echoes. Eleven scenes Palsar data of the year 2009 was processed and reveal well information imagery for geological interpretation that registered to geographic coordinate at WGS 84 projection system. Geological interpretation is stressed to identify lithology units and structure geology. In general three lithology unit type we recognized, i.e.: pre-tertiary basement, sedimentary unit, and volcanic units. Based on lineament and bedding trace, in the study area developed anticlines, synclines, faults, and joints. Folds trend to NE – SW, lineaments trend to N5oE, N50oE, N275oE, and N330oE and faults trend to NE – SW, N – S, and NW – SE. Palsar satellite data was proven effectively and efficiently useful in surface geological mapping in the remote area, limited infrastructure and cloudy areas.
Key word: PALSAR, South Upper Kutei Basin.
Author : Suliantara, Doma F. P, Isnawati, Trimuji S