GEOLOGI DAERAH KONDA DAN SEKITARNYA, KABUPATEN KONAWE SELATAN, SULAWESI TENGGARA

• Main Author: B Siagian, Gilbert
• Format: Final Project
• Language: Indonesia
• Subjects: Geologi, hidrologi & meteorologi
• Online Access: https://digilib.itb.ac.id/gdl/view/34320
• Institution: Institut Teknologi Bandung

Detailed geological was mapped held in Konda and surrounding area, South Konawe District, Southeast Celebes Province. The total area of this research area is about 100km2 and geographically located on 4°06’58.54 - 4°12’23.80 south latitude and 122°29’10.93 - 122°34’35.50 east longitude or 443000 – 453000 mT dan 9535000 – 9545000 mU. The aims of this research are to understand the geological setting of the research area include geomorphology, stratigraphy, geological structure, and geological history. Primary data used in this research were obtained from field observation on field data collection and then supported by analysis of petrography, micropaleontology, and structural analysis. There are four geomorphological units in the research area: Alluvium Plain unit, Metamorphic Ridge unit, Homocline Ridge Unit, Karst hill Unit. The research area has rectangular river flow pattern that shows the domination of fault and joint control. The geomorphological stage on research area indicates mature stage. The Stratigraphy of research area consists of Phyllite Unit and then Marble Unit which were formed in Triassic – Early Jurassic Epoch which is part of Australian Continent. Pliocene in the middle neritic environment. And then the younger unit was deposited, Sandstone-Claystone unit was deposited unconformably contact above Phyllite Unit in Late Miocene to Early Pliocene in the middle neritic environment. And in the Early Pliocene, Limestone Unit was deposited above Sandstone-Claystone Unit conformably in the inner neritic environment. Then Alluvial Unit was deposited above all units. Geological structure developed in the research area are imbricated reverse fault structure, strike-slip fault, and normal fault. The faults were created due to compression tectonic phase with Northwest- Southeast trend caused by the collision between Southeast Sulawesi Continental Fragment- Buton Continental Fragment-Tukang Besi Continental Fragment.