Scourian orogeny

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Scourian orogeny A mountain-building episode that occurred about 2600 Ma ago, during the Archaean, prior to the Laxfordian orogeny but possibly representing its first stages. It is marked by NW—SE trending folds immediately to the south of the Laxford area, affecting part of the Lewisian gneisses in what is now the extreme north-west of Scotland.