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Abstract
The dolerites of the main part of the Särv Nappe contain, after progressive alternating field and thermal demagnetization, a stable magnetic component of decl. 21.4°, incl. −9.1°, α25 = 12.4°, k = 11.3. This gives a geomagnetic pole at lat. 21°N, long. 170°E which is in agreement with published Silurian-Devonian poles from Fennoscandia. This together with a simple ‘fold test’ implies that the Proterozoic dolerites became remagnetized during the Caledonian orogeny. The magnetic directions from the dolerites in the northern part of the nappe, the Ottfjället block, indicate that this area has rotated ca. 100–110° counterclockwise in relation to the rest of the nappe.