East Warburton Basin

The state of South Australia. Warburton Basin would be at the NE corner.

The East Warburton Basin in South Australia is the site of a large impact crater of the Carboniferous period (around 360-300 million years ago). The subterranean structure lies buried at a depth of ~4 km, and measures a minimum of 200 km in diameter.[1] For comparison, Chicxulub crater is about 180 km in diameter.

Scientists identified the impact formation through analysis of shocked quartz grains from the area after a circular anomaly appeared in seismic tomography studies of the region.[2]

See also

Coordinates: 28°00′S 140°30′E / 28°S 140.5°E / -28; 140.5

References

  1. ↑ Vast asteroid impact zone found in Australia AFP/Google News, 19 February 2013. Accessed 15 May 2013.
  2. ↑ Geophysical anomalies and quartz microstructures, Eastern Warburton Basin, North-east South Australia: Tectonic or impact shock metamorphic origin? Tectonophysics Vol. 589, 18 March 2013, Pp. 57–76. Accessed 15 May 2013.


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