GEOLOGI DAN MEKANISME STRUKTUR GEOLOGI DI DESA PERJIWA KECAMATAN TENGGARONG SEBERANG KABUPATEN KUTAI KARTANEGARA PROVINSI KALIMANTAN TIMUR

Abstract

The research area is located in the village of Perjiwa, Tenggarong Seberang District, Kutai Kartanengara Regency. This research aims to know the geological conditions such as geomorphology, structurul geology, stratigraphy, and geological structure mechanisms of the research area. The data acquisition method is focused on surface geological data, consisting of literature study, data acquisition, and data analysis. The geomorphology of the research area is divided into 2 landforms, structural and fluvial. The structural landform formed slashed hills, and fluvial landform created alluvial land. There are three lithological units in the research area, namely the claystone Perjiwa, the sandstone Bukit Raya and the alluvial deposits. The geological structure that constructed in the research area is the anticline Perjiwa, syncline Perjiwa, anticline Separi, syncline Bukit Raya, trust fault Bukit Raya, trust fault Tanjung Batu, strike-slip Tanjungbatu, and trust fault K.M 5. The first geological structural mechanism was formed folds in the research area. The longer the force that worked stronger so that the rocks pass through the elasticity boundary so that formed the trust fault in the research area, the force was increasing so that formed strike-slip fault.