Hi Steve,
Earthsci.org have a link on this feature.
See here -
http://earthsci.org/fossils/space/cr...r/qcrater.html
Quote:
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Originally Posted by earthsciences.org
Information received by Earth Science Australia
indicates that this feature, while very interesting geologically...
It is, in fact, a layered ultramafic intrusion
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The Google Earth image has higher resolution than the nearmap.com image posted above.
Wikipedia page on Layered Intrusion here -
http://en.wikipedia.org/wiki/Layered_intrusion
Wikipedia page on Ultramafic rock here -
http://en.wikipedia.org/wiki/Ultramafic
Donate to Wikipedia here -
http://wikimediafoundation.org/w/ind...i%2FUltramafic