Magnetic signature and morphology of the Acraman impact structure, South Australia

G. E. Williams; P. W. Schmidt; D. M. Boyd

Magnetic signature and morphology of the Acraman impact structure, South Australia

G. E. Williams, P. W. Schmidt, D. M. Boyd

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Pages (from-to)	431-442
Number of pages	12
Journal	AGSO Journal of Australian Geology and Geophysics
Volume	16
Issue number	4
Publication status	Published - 1996

Cite this

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title = "Magnetic signature and morphology of the Acraman impact structure, South Australia",

abstract = "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.",

author = "Williams, {G. E.} and Schmidt, {P. W.} and Boyd, {D. M.}",

year = "1996",

language = "English",

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AU - Williams, G. E.

AU - Schmidt, P. W.

AU - Boyd, D. M.

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N2 - 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.

AB - 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.

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M3 - Article

AN - SCOPUS:0030432555

SN - 1320-1271

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SP - 431

EP - 442

JO - AGSO Journal of Australian Geology and Geophysics

JF - AGSO Journal of Australian Geology and Geophysics

IS - 4

ER -

Magnetic signature and morphology of the Acraman impact structure, South Australia

Abstract

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