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djtermoz | all galleries >> New Zealand >> South Island > Moeraki Boulders
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Moeraki Boulders
15-May-2005

Moeraki Boulders

According to scientists, the boulders are septarian concretions formed about 65 mln years ago. Crystallization of calcium and silica around charged particles in muddy undersea sediments gradually formed the boulders in a process taking four million years.


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