Acraman crater
Acraman crater is a deeply eroded impact crater in the Gawler Ranges of South Australia.
It is marked by Lake Acraman, a circular ephemeral dry lake about 20 kilometres (12 mi) in diameter. The crater and the later discovery of its ejecta were reported in the journal Science in 1986.[1][2] The evidence for impact includes the presence of shatter cones and shocked quartz in shattered bedrock on islands in Lake Acraman.
Acraman Crater Media
Landsat image of Lake Acraman; screen capture from NASA World Wind
Oblique Landsat image of Lake Acraman draped over digital elevation model (10x vertical exaggeration), looking east towards the Flinders Ranges where ejecta has been found; screen capture from NASA World Wind.
Orange and brown soils mix with off-white saltpans, including Lake Gairdner and Lake Everard in this true-colour image.
References
- ↑ Williams, G.E.. The Acraman impact structure: source of ejecta in late Precambrian shales, South Australia. Science 233 (4760) (1986). p. 200–3. doi:10.1126/science.233.4760.200.
- ↑ Gostin, V.A.. Impact Ejecta Horizon Within Late Precambrian Shales, Adelaide Geosyncline, South Australia. Science 233 (4760) (1986). p. 198–200. doi:10.1126/science.233.4760.198.