| Popis: |
While tracing the various subdivisions of the Durness Series of quartzites and limestones from Sutherland southwards into Rossshire, careful attention has been paid to any indications of fossiliferous zones which might throw additional light on the age of the strata. During last season9s campaign, certain sections in the Dundonnell Forest happily furnished the evidence which has been eagerly sought after. Physical Features of the Dundonnell Forest. Between Little Loeir Broom and Loeh Maree the members of this series traverse one of the wildest tracts in the west of Ross-shire. The Dundonnell Forest lies mainly to the south of the head of Little Loch Broom, stretching southwards by An Teallach (3483 ft.) to Loch an Nid and Creag Rainich (2646 ft.). The southern portion of the Forest is drained by the Loch an Nid river, which, finding its source in the loeh of that name, flows northwards for about three miles towards the shooting-lodge of Achneigie. The river is bounded on the east for part of this distance by a precipitous crag (1000 ft. high), and on the west by the long dip-slopes of quartzite and Torridon Sandstone of Sgurr Ban (3194 ft.) and Ben a Chlaidheimh. Near Achneigie the river bends towards the north-west, soon pouring its waters into Loch na Sheallag. From this loch issues the Gruinard river, discharging into Gruinard Bay. The sections from which the fragments of Olenelluz were obtained occur along the eastern slope of the valley drained by the Loch an Nid river, between Loch |
