TECTONOSTRATIGRAPHY AND SEDIMENTATION PALEOGENE DEPOSIT IN OSKAR AREA, NORTH WEST JAVA BASIN

• Main Author: Y Gulo, Meyman
• Format: Theses
• Language: Indonesia
• Subjects: Geologi, hidrologi & meteorologi
• Online Access: https://digilib.itb.ac.id/gdl/view/73802
• Institution: Institut Teknologi Bandung

Oskar area located in North West Java Basin, in offshore of Jatibarang Sub-basin.The purpose of this research are to understanding the tectonic setting and sedimentation pattern in synrift phase. There is east-west tectonic activities in Jatibarang Sub-basin that influence formation of basin in research area. Tektonostratigraphy and sedimentation pattern studies are based on sequence stratigraphic on well log data in cross section such as A-A’ and B-B’ in North – South orientation and cross section C-C’ in West – East orientation, conventional core, biostratigraphic data, seismic 3D data for make geometrical and paleogeography in Oskar area. Sedimentation pattern analysis of syn-rift deposit based on well data and seismic attribute spectral decomposition. Paleogen deposit in Oskar area has divided into three intervals namely Basement – Jatibarang Top interval, Jatibarang – Sequences Boundary 1 interval, and Sequences Boundary 1 – Maximum Flooding Surface 1 interval. Based on conventional core which is integrated with depositional environment biostratigraphic data and seismic attribute, each interval in Paleogen deposit have facies alluvial-fan-delta complex, fluvial complex, and deltaic complex. The result of tectonostratigraphy analysis, Paleogen deposit in Oskar area is effected by normal faults in North West – South East and North – South orientation with sedimentation occurred in the flexural margin.