284 
BAl^HYMETRICAL SURVEY OF 
these are associated bands of garnet, amphibolite, and hornblende 
schist that have been mapped for some distance both in the Fannich 
mountains and near Scardroy, in the basin of the Meig. In some areas 
schists of the ultra-basic type appear that represent original masses of 
peridotite. This group forms isolated areas or inliers in the midst 
of the Moine series, being regarded as older than the latter, and 
probably representing the floor or platform on which the members of 
the Moine series rest. It is significant that different bands of the 
so-called Lewisian gneisses in the Conon basin are in contact with the 
crystalline Moine schists of sedimentary origin, and that different 
subdivisions of the latter overlap the former. 
These gneisses of Lewisian type appear at intervals, sometimes 
forming comparatively narrow zones, and, again, rather broad belts. 
On the north and west slopes of the Fannich mountains they have been 
traced for several miles, being there overlain and underlain by the 
flaky muscovite biotite schists of the Moine series. Southwards between 
Strath Bran and the basin of the Meig, near Scardroy, there is a large 
development of them, where their relations to the Moine schists are 
well displayed. They likewise appear in Glen Orrin, and southwards 
towards Glen Strathfarrar, and eastwards near Loch Luichart. 
With the exception of certain masses of foliated and unfoliated, 
intrusive, igneous rocks, the members of the Moine series occupy the 
rest of the area covered by the crystalline schists. Their lithological 
characters are comparatively uniform. The two main subdivisions, 
already indicated, graduate into each other in certain localities, thus 
forming an intermediate type between the highly quartzose granulitic 
schists on the one hand and the flaky muscovite biotite schists on the 
other. The members of the Moine series, which have the largest 
development and the widest distribution, consist of granulitic quartz- 
schists or quartz biotite granulites, but the pelitic schists sometimes 
form the most elevated ground, as, for instance, on Sgurr Mor Fannich 
(3637 feet), the highest of the Fannich mountains.* The boundary line 
between the two main subdivisions of the Moine series is highly involved, 
showing intricate rapid folding, frequently isoclinal, and pointing to 
intense reduplication of the strata. The most prominent belts of the 
garnetiferous muscovite schists have a wide distribution in the basin of 
the Conon. For example, they appear in the Fannich mountains, and 
extend south-west by Ben Fionn and Loch Bosque to Moruisg, east of 
Glen Carron. They likewise appear in Glen Orrin and Glen Meig, 
and prominent bands have been traced more or less continuously from 
Strath Bran north-north-west by Aultguish and the hills west of Strath 
Vaich to Glen Beg and Glen Alladale, in the basin of Strath Carron. 
* The quartz-schists contain pebbly bands in places, thus clearly showing their 
derivative origin. 
