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The geophysical data collected includes a total of 1827 km of multi-channel seismic data and 562 km of Chirper sonar data. A total of 11 gravity cores, 28 piston cores, 18 surface grabs and 11 short trigger cores were collected on the voyage. Water profile (CTD) measurements and water samples were collected at nine stations and seabed bottom photographs were made at 11 stations. The expedition discovered and mapped a shelf sediment drift deposit covering about 400 km2 lying in an >800m deep section of the George Vth basin west of the Mertz Glacier. It is a true "drift" deposit, since these sediments exhibit a depositional architecture indicative of contour-parallel sediment transport. A significant observation is that the drift thins to the north into an acoustically-transparent veneer; this observation implies that the drift is sourced from the outer continental shelf, with sediment being transported landwards, across the shelf and into an 850m deep inner shelf basin.
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The purposes of this Bulletin are to explain and describe the accompanying 1:10 000 000-scale geological map, to discuss briefly the map's units, and to provide readers and users with a guide to the rapidly expanding literature of Antarctic geology, from which they can obtain more detailed information.
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The work described in this report was part of the Bureau of Mineral Resources' contribution to the 1988 Australian National Antarctic Research Expedition. The period of data covered in this report is from 00:00UT 01-01-1988 to 23:59UT 31-12-1988.