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Geology
Three major divisions of the pre-Cambrian system can be found. Lewisian – the oldest, comprising of such rock between one thousand four hundred million years and two thousand six hundred million years old. Moin Servies and Tomdonian which are eight to nine hundred million years old distinguishable by appearance. Two or three annual trips are made by geological students from national and international universities to study the local rock. ![]() |
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