Lithogenic and Antropogenic in Surface Sediment from Outlet of Tempe Lake, South Sulawesi

Abstract

Prehistory of Central of South Sulawesi was a marine environment connecting Bone Bay and Makassar Strait through Tempe Lake. The influence of marine can be traced nowadays in outlet of Tempe Lake (Cenrana River). The concentration of SiO2 decreases toward downstream, on contrary Fe2O3 and CaO tend to increase downstream. Heavy mineral (Zr and TiO2) provides an increasing trend downstream . Most of the sediments originate from the rock covering the area and precipitation from the seawater. The latter can be found as far as 34 km from the coast of Bone Bay to the west.