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It is interesting to reveal how the limestone at Jeneponto was developed, the age, depositional environment, and stratigraphy position in the Tonasa Formation. The distribution of lithology is quite extensive in the form of spots and are only found along the southwest of the southern arm of Sulawesi. These phenomena show that there were similarities in the paleoceanographic condition in the past as in Barru area. Accordingly, limestone could also develop in this area. This research was conducted in the Karama area where the Tonasa limestone was well exposed, so that data collection using the measuring section method could be carried out. A total of 15 samples were prepared by the smear slide method and then identified calcareous nannofossils were under a polarizing microscope at 1000 x magnification. We want to focus on describing nannofossil at each layer, determining the age, and finally composing the biostratigraphic zonation of the Karama traverse. Nannofossil investigation results from the bottom to the top of section found nannofossil assemblages are Braarudosphaera sp., Cyclocargolithus abisectus, Dictyococcites antarcticus, Reticulofenestra sp., Ericsonia sp., Pontosphaera sp., Coccolithus pelagicus, Coccolithus eopelagicus, Discoaster deflandrei, Sphenolithus conicus, Sphenolithus moriformis, Sphenolithus delphix, Sphenolithus compactus, Sphenolithus predistentus, Zygrhablithus bijugatus. [ABSTRACT FROM AUTHOR]

Foraminifera proxy is one of the approaches used in predicting paleoclimate. They are buried in fine sediments, and they are well preserved in geological time. The Foraminifera study on the outcrop of carbonate rocks was conducted on the Barru River at Palakka area. The measuring section method was carried out in that area and obtained 17 intervals with variations in layer thickness from 5 - 258 cm consisting of marl and limestone interbeds. After the sample was prepared, the planktonic foraminifera was ready to be identified under a microscope. This study is aimed to improve the application of foraminifera, particularly paleoclimatic inferences. The results from the planktonic foraminifera analysis of Barru River traverse resulted from 16 species from the bottom to the top of the section. Globigerina primitiva, Globigerina senni, Globigerina soldadoensis, and Globigerina aragonensis are decreasing in number from the lower to the upper layer, even some of them do not appear again. Instead, some species appear, and their numbers increase, such as Globigerina yeguaensis, Globigerinatheka barri, Globigerinapsis index, Globorotalia centralis, Globorotalia bolivariana, Globorotalia renzi, Globorotalia renzi, Hantkenina brepisvina, Hantkenina dumblei. [ABSTRACT FROM AUTHOR]

We have conducted geoelectric resistivity and shear wave velocity (Vs30) study to identify the landslide potential hazard, around Geophysics Station Lembang, Bandung (107,617∘ E and 6,825∘ S). The the geoelectric analysis using Dipole-Dipole resitivity configuration, while shear wave velocity analysis performed using the Multichannel Analysis of Surface Wave (MASW). The study results indicate that the assumed soil or clay depth from the electrical resistivity observation was in accordance with the confirmed soil or clay depth by the MASW investigation. Based on these conditions, indicate the high potential of landsliding in this area, landslide potential supported by high slope angle in this area. [ABSTRACT FROM AUTHOR]