Notes on the geology of Liverpool Crater, Northern Territory, Australia

Mathematics – Logic

Scientific paper

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Earth Planetary Structure, Geological Surveys, Hypervelocity Impact, Meteorite Craters, Metamorphism (Geology), Geochronology, Australia, Thermal Shock, Breccia

Scientific paper

The Liverpool Crater is a partially exhumed, eroded impact crater located in the Arnhem Land Aboriginal Reserve at 12 deg 24 min S latitude and 134 deg 03 min E longitude. The crater was initially recognized as a possible impact site by Rix (1965), and briefly visited by Guppy and Brett (1971), who gave a preliminary description of the geology of the crater and, together with Milton, documented evidence of shock metamorphism. The present authors first reached the Liverpool Crater by helicopter in September 1996. Rocks exposed in the vicinity of the Liverpool Crater include sandstone and volcanic rocks of the Kombolgie Sandstone of Mesoproterozoic age. Other mappable geologic units at the crater include two distinct breccia units, which, together, form a prominent ring-shaped ridge, a sedimentary deposit that fills the original crater, a Tertiary laterite formed chiefly on the sedimentary fill, and Quaternary alluvium.

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