This report covers gravity survey work conducted by Century Geophysical Corporation for Magellan Petroleum Corporation during the period 1st July to 31st December 1959. The survey was made following an aeromagnetic survey.
The gravity survey was intended to corroborate the magnetic interpretation; to provide further information as regards depth to basement and fault systems; and to indicate structural "highs" which could then be more precisely delineated by seismic reflection methods.
Gravity values were observed and plotted over the area surrounding Winton, Queensland. Both the gravity survey and the aeromagnetic survey indicate a fault or fault zone across the area. In an appendix by the Bureau of Mineral Resources, it is stated that a seismic profile crossing this zone indicates that this zone is either a fault or a monoclinal fold.
Magellan Petroleum Corporation are planning to deepen the water bore at Corfield, and if this does not provide sufficient information regarding the deeper rocks, a further stratigraphic test will be drilled at Winton.