SEDIMENTARY ENVIRONMENT OF SAMPOLAKOSA FORMATION AT GONDA BARU SUBDISTRICT SORAWOLIO, BAU-BAU SOUTHEAST SULAWESI

PROCEEDINGS JOINT CONVENTION BALI 2007
The 32^nd HAGI, The 36^th IAGI, and The 29^th IATMI Annual Conference and Exhibition

SEDIMENTARY ENVIRONMENT OF SAMPOLAKOSA FORMATION
AT GONDA BARU SUBDISTRICT SORAWOLIO,
BAU-BAU SOUTHEAST SULAWESI

Budi Rochmanto and Laode M. Adam

Sedimentology Laboratory Department of Geology, Hasanuddin University
Jalan Perintis Kemerdekaan Kampus Unhas Tamanlarea Km 10, Makassar

ABSTRACT

The research was carried out to examine the age and the sedimentary environment of Sampolakosa Formation at Gonda Baru subdistrict Sorawolio Bau-Bau. Measuring section has been done 250 meters along the outcrop. The measuring section has already been done on the outcrops. The sedimentary environment then be analyzed by determination of fossils contain in the samples.

Lithology of Sampolakosa Formation at the research area is composed of marl with intercalation of limestone and diatomea in the middle and the lower part. The thickness of the outcrop is 61.3 meters. Limestone on the upper part of the section is 3.10 meters thick.

Based on the benthonic foraminifera, the age of the Sampolakosa Formation at the research area is Early Pliocene (N1 8), therefore the lithology at the study area is the middle part of Sampolakosa Formation. The sedimentary environment of the Sampolakosa Formation at the area is middle shelf –lower slope.