#TITLE_ALTERNATIVE#

• Main Author: NAUFAL (NIM : 12012073), MUHAMMAD
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/23299
• Institution: Institut Teknologi Bandung

Research was held in Lelekaa and surrounding area, Wolasi Sub-District, South Konawe District, Southeast Celebes in an area of 99 km2. The purpose of this geological mapping is to study the geological setting in research area that includes geomorphology, stratigraphy, structure, and geological history. Primary data used in this research <br /> obtained from field observation and field data collection. Several analyses have been used in order to achieve the objective which are geomorphology analysis, petrography <br /> analysis, micropaleontology analysis, and structural analysis. <br /> Research area landscape is closely related to lithologic constituent and geological structures. As a result, research area was divided into three geomorphologic units which are Wolasi Homocline Valley Unit, Wolasi Homocline Ridge Unit, and Boro-Boro Fault Block Hills Unit. Geomorphic stage of the research area is young to mature stage and the drainage patterns are rectangular and parallel. The oldest rock unit in the research area is Trias to Jura Phyllite Unit which is part of Australian Continent. This unit can be equated with Meluhu Formation. In the Jura up to the Oligocene, rift-drift phase occured and led to conditions like today's continental fragments. In the Early Miocene, there was a collision between Buton Continental Fragment and Southeast Celebes Continental Fragment. This process caused the formation of reverse faults, strike-slip faults, and basin. Furthermore, Conglomerate-Sandstone Unit deposited with unconformity contact above Phyllite Unit in the Middle Miocene. This unit is a part of Langkowala Formation. In the Late Miocene to the Middle Pliocene, Claystone Unit, Sandstone Unit, and Sandstone-Claystone Unit deposited. These three units can be synchronized to Boepinang Formation. Afterward, there was a collision between Tukang Besi Continental Fragment and Buton Continental Fragment in the Pliocene-Pleistocene. This tectonic process formed folding and tear fault in research area.