Palaeomagnetic correlation of the Acraman impact structure and the Late Proterozoic Bunyeroo ejecta horizon, South Australia

• Published in: Australian Journal of Earth Sciences
• Main Authors: Schmidt, P. W., Williams, G. E.
• Format: Article in Journal/Newspaper
• Language: English
• Published: 1991
• Subjects: Acraman impact structure; Adelaide Geosyncline; Bunyeroo ejecta horizon; Bunyeroo Formation; Gawler Range Volcanics; Late Proterozoic palaeomagnetism; Meteorite impact; Geomagnetic Pole
• Online Access: https://researchers.mq.edu.au/en/publications/b8f60359-5406-4594-85d4-64af13b5ac54; https://doi.org/10.1080/08120099108727972; http://www.scopus.com/inward/record.url?scp=0026307766&partnerID=8YFLogxK

Palaeomagnetic data for meltrock from the Acraman impact structure, South Australia, indicate a stable magnetization and a virtual geomagnetic pole that is in close agreement with the palaeomagnetic pole for the Late Proterozoic (˜ 600 Ma) Bunyeroo Formation in the Adelaide Geosyncline. The palaeomagnetic data are therefore consistent with the correlation of the Acraman impact event and deposition of the widespread impact ejecta horizon in the Bunyeroo Formation.