Limestone Microfacies of Baturaja Formation along Air Rambangnia Traverse, South OKU, South Sumatra

Abstract

-Limestones of the Baturaja Formation occur at Air Rambangnia traverse, South Ogan Komering Ulu, South Sumatra, and they are used as objects for microfacies studies. The microfacies studies are based on a detailed petrographic analysis of thirty four limestone samples, taken from the traverse. Four types of the limestones are identified such as wackestone, packstone, grainstone, and floatstone. At least five microfacies form the limestone succesion of the Baturaja Formation. They are interpreted as sedimentary facies of very restricted bay and pond, back reef local slope, slope and shelf edge, winnowed platform edge sand, and reef flank facies.

Clastic Sediment Characteristics of Gumai Formation: Preliminary Study of Tertiary Rocks in South Sumatra Basin

“…In Muara Dua and Simpang, field data collection was spotted sampling and systematic sampling in Gumai Formation. Field data collection followed the previous study [18], which is considered a significant component in the clay matrix of the Gumai Formation.…”

“…The depositional environment of the Gumai Formation is still challenging to be studied further related to the debate interpretation above. A detailed study about Tertiary rock in Baturaja region is restricted to Baturaja Formation [18]. Gumai Formation in Simpang and Muara Dua area is an ideal location because the location has never been studied in previous studies [1,2,[8][9][10][11][12][13][14][15][16][17].…”