Dating samples of corals and shell from the elevated coral reef terrace on Rottnest Island, Western Australia, indicate that in this region away from active plate boundaries the sea stood at least 3 m above present sea level 132,000 ?? 5,000 years ago. There is no geologic evidence of other ancient reef-forming periods on this island. ?? 1979.
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Uranium-series age of coral reef growth on Rottnest Island, Western Australia