NJG68-4-06
1988
Reinterpretation of Finnmarkian deformation on western Sørøy, northern Norway: some comments
68
4
309-312

Comments are made on certain controversial aspects of a recent contribution to this journal, involving
mafic dyke/host rock relationships from southwestern Sørøy, West Finnmark. Plutonic rocks of the
Seiland Igneous Province are Iikely to have intruded during ongoing deformation in an overall transpressive
regime, with local transtension facilitating magma upwelling and emplacement, rather than in
a simple passive rifting situation. An exclusive 'flow-fold' origin for widespread fold structures believed
to be restricted to contact-inetarnorphic aureoles of gabbros is improbable. Isotopic dating studies in the
region are outlining two separate high-grade metarnorphic events during the period Middle Cambrian to
Early Ordovician.

0029-196X
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