Scourian

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• Precambrian time — Interval of geologic time from с 3. 8 billion years ago, the age of the oldest known rocks, to 544 million years ago, the beginning of the Cambrian Period. This interval represents more than 80% of the geologic record and thus provides important… …   Universalium

• Lewisian Complex — ▪ geology also called  Lewisian Gneiss,         major division of Precambrian rocks in northwestern Scotland (the Precambrian began with the formation of the Earth s crust about 3.8 billion years ago and ended 540 million years ago). In the… …   Universalium

• Nain province — Note Saglek Bay, Nain and Hopedale In Labrador, Canada, the North Atlantic craton is known as the Nain province. The Nain geologic province was intruded by the Nain Plutonic Suite which divides the province into the northern Saglek block and the… …   Wikipedia