On the Structure and Mode of Occurrence of Scolithus linearis (Haldeman) in the Cambrian Quartzites of the North-West Highlands

Abstract

It is some thirty years ago and about ten years after the mapping of this area by the officers of the Geological Survey that one of the present writers ascended Quinaig at Inchnadamph and saw for the first time the so-called “Pipe-rock” which caps the summit of that mountain. Here one can walk over the exposed surfaces of the quartzite and it is impossible not to observe the curiously spotted or pitted surfaces of the white slabs which, in many places, look like nothing so much as the soles of a labourer's shoe covered with projecting hobnails (see Plate IV, Fig. 1).