Year

1992

Degree Name

Master of Science

Department

Department of Geology

Abstract

Tlic Balikpapan Bay Area (East KaliinaiiUin, Indonesia) lies in Uie sou'lieni part of the KuUii Basin which developed during Tertiary. The KuUii Basin is a divergent basin, created due to the spreading of die Makassar Strait Tlie Balikpapan Bay Fault Zone which is also associated with the spreading, is a syndepositional fault zone and has affected sediinenUition in the bay area. Several uplifts initiated in the ccntral part of die KuUii Basin, caused die delu\ic depositional systems which prograded eastwards and influenced die shelf environments which dominated die Balikpapan Bay Area diroughout Tertiary. Four fonnations encountered in die Balikpapan Bay Area are: die Pamaluan, Maruat, Yakin and Sepinggan Formations in descending order. The Sepinggan Formation is divided into die Sepinggan Deltaic Unit, Sepinggan Carbonate Unit and Sepinggan Shallow Marine Unit from older to younger units respectively. Assessments of source potential in die Balikpapan Bay Area were done using the combination of several geochemical mediods but emphasizing organic petrological technique. Assessments are based on: coal is an effective generator of liquid hydrocarbons at low maturation levels; all three maceral groups (inertinite, vitrinite and liptinite) have die capacity of generating liquid hydrocarbons; and the generation of oil, gas and condensate is probably related to rank and dominant maceral compositions. Score A diat relates to hydrocarbon generation capacity employing maceral composition, is calculated to evaluate source potential in addition to cliissic mediods. Estimate of organic matter is comprycd to liUiology of each formation.

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Unless otherwise indicated, the views expressed in this thesis are those of the author and do not necessarily represent the views of the University of Wollongong.