THE FRESH- WATER LOCHS OF SCOTLAND. 237 



Hotel, where the grits have been made schistose, and where the felspars 

 have been partially broken down and reconstructed. Near the outcrop 

 of the Kishorn thrust, west of Glen Carron, the Lewisian gneiss is 

 sheared and rolled out, passing into flaser gneiss and schist with a 

 platy or fluxion structure. 



East of the Moine thrust, which runs south from Dundonnell by 

 Loch an Nid, the heights of Kinlochewe, and Loch Coulin to Glen 

 Carron, the area represented on the map is occupied by crystalline 

 schists of a remarkably uniform type. They consist mainly of flaggy 

 granulitic quartzose schists and mica-schists, with prominent belts of 

 garnetiferous muscovite-biotite schists. The latter are well developed 

 on Fionn Bheinn, north of Achnasheen, and on Sgurr Mor Fannich, 

 where they form conspicuous crags. Near the Moine thrust, and, 

 indeed, for some miles to the east of the plane of that thrust, the 

 Eastern or Moine schists have a persistent dip to the south-east. In 

 the Fannich mountains they are over-folded on a stupendous scale, 

 and similar evidence is obtained in the group of mountains north of 

 Achnasheen. 



Reference must now be made to the faults that affected the area after 

 the post-Cambrian thrusts. Of these by far the most important is the 

 great line of displacement that crosses the region in a north-west and 

 south-east direction, coinciding with the long axis of Loch Maree, 

 which may be termed the Loch Maree fault. It has been traced in a 

 north-west direction along the river Ewe, by the south margin of Loch 

 Ewe, towards Loch an Drainc, where the Torridon Sandstone on the 

 north-east side is faulted down against the Lewisiau gneiss at Poolewe. 

 At Kinlochewe this dislocation has been traced up Glen Dochartie and 

 onwards in the direction of Ledgowu. Indeed, the probable con- 

 tinuation of this fault has been recently found far to the south-east in 

 the basin of the Conon. Where the line of fault is not obscured by 

 drift, it gives rise to a prominent feature on the surface of the ground. 

 This powerful fault shifts the outcrops of the Moine and Kishorn 

 thrust-planes, and likewise of the overfolded strata associated with 

 these thrusts. It further shifts the outcrop of the normal fault in 

 Glen Fhasaigh, which runs in a north-east direction between the head 

 of Loch Maree and Lochan Fada (see map). The continuation of the 

 Fhasaigh fault is to be found in Glen Grudie, on the south side of Loch 

 Maree, so that its outcrop is shifted at least for a distance of two miles 

 by the Loch Maree dislocation. 



In the north-west part of the area, in Isle Ewe, and in the pro- 

 montory between Loch Ewe and Gruinard Bay, there is a strip of 

 Triassic Sandstone (/ on map) thrown down by two powerful faults. 



Throughout the Loch Maree district, and especially in the moun- 

 tainous region embracing the Torridon Sandstone and the Cambrian 

 quartzite, there is evidence of intense glaciation. During the climax 



