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Geological Formations

Orkney

Sedimentary and Stratigraphic Formations

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Orkney is an archipelago of roughly 70 islands off the north coast of Scotland, about 20 of which are inhabited. The largest island, the Mainland, covers 523 square kilometers and holds Kirkwall, the main settlement, with a population across the islands of around 22,000. The surface rock of Orkney is almost entirely Old Red Sandstone of Middle Devonian age, resting on older metamorphic and igneous rocks of the Moine series. The islands carry Neolithic monuments recognized as a UNESCO World Heritage Site, supported by fertile soils and a mild climate moderated by the Norwegian Current.

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Orkney (Wikipedia)
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Orkney (), also known as the Orkney Islands, is an archipelago off the north coast of mainland Scotland.
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