Summary: Journal of the Geological Society, London, Vol. 155, 1998, pp. 297­309. Printed in Great Britain.
The tectonic significance of pre-Scandian 40
Ar/39
Ar phengite cooling ages in the
Caledonides of western Norway
TORGEIR B. ANDERSEN1
, HENRY N. BERRY IV2
, DANIEL R. LUX3
& ARILD ANDRESEN1
1
Institutt for Geologi, Universitetet i Oslo, PO Box 1047, 0316 Blindern, Oslo, Norway
(e-mail: t.b.andersen@geologi.uio.no)
2
Maine Geological Survey, 22 State House Station, Augusta, ME 04333, USA
3
Department of Geological Sciences, 119 Boardman Hall, University of Maine, Orono, ME 04469, USA
Abstract: Pre-Silurian continental-margin deposits in western Norway, non-conformably overlying
allochthonous continental orthogneisses retain Ordovician 40
Ar/39
Ar cooling ages for phengites, implying

Source: Andersen, Torgeir Bjørge - Centre for Physics of Geological Processes & Department of Geosciences, Universitetet i Oslo

Collections: Geosciences