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In page Lofoten:

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Lofoten is a horst ridge of bedrock.[1] The rocks of Lofoten belong to wider the Western Gneiss Region of Norway.[2] Some of the high relief and irregular surfaces of Lofoten has been attributed to etching that took place during the Mesozoic Era. Evidence of this would be the kaolinite found at some locations.[3] To the northwest the Lofoten archipelago is bounded by the NE–SW-trending West Lofoten Border Fault. This is a normal fault whose fault scarp has been eroded forming a strandflat.[4]