Biostratigrafi Foraminifera Planktonik Batupasir Formasi Pasangkayu, Cekungan Lariang, Sulawesi Barat

Research area lie on Pasangkayu Area of Pasangkayu subdistrict, North Mamuju Regency of West Sulawesi Province and it's one of oil and gas blocks which managed by Marathon oil. The aim of the research is to provide more data biostratigraphy of Pasangkayu Formation, also expected to understanding the difference of Pasangkayu Formation and Lisu Formation. Based on biostratigraphy of planktonic foraminiferal analysis that have been conducted the research area of the upper part of Middle Miocene - Early Pliocene consisting of three zonations biostratigraphy zone I or the zone of Globigerina nepenthes - Globorotalia (T) siakensis, zone II or the zone of Globorotalia (G) tumida pleistumida and zone III or the zone of Globorotalia (G) tumida tumida - Sphaeroidinellopsis subdehiscens paenedehiscens