Abstract

In the Precambrian gneisses of SE Norway, several generations of amphibolitised basic dykes/sills occur. While prekinematically emplaced dykes and sills show “normal” (but complex) fold structures, other metabasic intrusions have imposed a deformation on to the host rock. Apparent fold structures which have developed due to fabric control exerted by the host rocks, are recorded from late kinematic intrusions. Attention is drawn to the problem of distinguishing primary intrusive structures from simple and multiple fold-structures.

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