Abstract
Sedimentation is the deposition of rock material that has been transported by water or wind power. One result of the accumulation of sediment in a basin is siltation, which can cause flooding as it did at Lake Sidenreng. This research located in Teteaji Village, Tellu Limpoe District, Sidenreng Rappang Regency, South Sulawesi Province.. This research aims to determine the characteristics of the Sidenreng Lake Quaternary sediments, specifically in the mechanism of transportation and provenance. Determining the sediment characteristics is important as the basis of planning in overcoming various problems in the lake. The methods used in this study are granulometric analysis and petrographic analysis. The sieve analysis results that the average grain size at the study site consists of 3 (three) types of sedimentary fractions, namely medium sand, fine sand, and very fine sand. This material deposited with a bed load transport distribution system and weak depositional energy. Sand material is spreading from the southwest and is gradually smoothing to the northeast at the study site. The petrographic analysis results that the provenance of sediment deposited material in Lake Sidenreng comes from volcanic breccia rocks of the Camba Formation, lava tracts of Parepare Volcano Members, and the Sandstones of the Camba Formation and Walanae Formation.
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