Interpretation of Geophysical Profiles Between Singapore and Labuan, North Borneo

Abstract

An interpretation is given of an airborne magnetometer profile from Singapore to Labuan, North Borneo, coupled with a gravity profile which partially covered the same path. The interpretation indicates a shallow basement along the western half of the profile, except for a minor sedimentary basin about 50 miles west of the Tambelan Islands, and another minor sedimentary basin in western Borneo. East of Kuching, Sarawak, the geophysical profiles apparently impinge on a major basin, with sedimentary thickness of the order of 10,000 ft.