Acraman is a major complex impact structure located in the Mesoproterozoic Gawler Range Volcanics of the Gawler Craton, S Australia, and has parts of its distal ejecta preserved in late Neoproterozoic (~590 Ma) strata of adjacent basins. Geomorphology and satellite images reveal a severely degraded structure comprising a near-circular central topographic depression 30 km across and arcuate features at 85-90 and ~150 km diameter. High-resolution digital aeromagnetic data for Acraman reveal a conspicuous circular magnetic low, 20 km in diameter. Several discontinuous magnetic lineaments that roughly parallel the boundary of the circular magnetic low occur at 85-90 km diameter. Acraman originally was a complex crater with central peak.
|Number of pages||12|
|Journal||AGSO Journal of Australian Geology and Geophysics|
|Publication status||Published - 1996|