Nature 284, 53 - 55 (06 March 1980); doi:10.1038/284053a0

Silurian or Upper ordovician fossils at Guolasjav'ri Troms, Norway

R. E. Binns & R. A. Gayer

Institute of Biology and Geology, University of Tromsø, PB 790, 9001 Tromsø, Norway^*
Department of Geology, University College, PO Box 78, Cardiff CF1 1XL, UK
^*Present address: Dybdahlsvn. 20,7000 Trondheim, Norway.

In August 1979, specimens of rugose and tabulate corals, crinoids and brachiopods (Fig. 1a) were recovered from meta-limestones in a belt extending 0−3.5 km north-west of Guolasjav'ri, a mountain lake south-east of Kåafjord, Troms, in Norway (Fig. 2, locality I). This is the first fauna to be recognised in this part of the Caledonian nappe sequence in Troms. The presence of corals proves that these metalimestones are not older than Middle Ordovician which imposes constraints on the correlation of this series with units in the Caledonides to the north and south and has an important bearing on the problematic relationship between the dominant Scandian phase (mid-Silurian¹) of the Central Scandinavian Caledonides and the Finnmarkian phase (late Cambrian²) of northernmost Scandinavia.

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