Subsidence curves and modelling of some Indonesian Tertiary basins

Abstract

Subsidence curves of North Sumatra, South Sumatra, Barito Basin, North-East Java Basin and Salawati Basins were constructed using well-bore data, calibrated by micropalaeontology and seismic sections. All the studied basins are Tertiary in age, but they show essential differences and similarities from the point of view of basin forming mechanics, depositional fill and final basin modifYing tectonics. The differences are related to the different tectonic setting of the basins; position of the basin in relation to the type of lithospheric substratum, proximity to a plate margin and type of plate boundary nearest to the basin (diverge:Qt, convergent, transform).