rod 
GLENGARIFF GRITS AND SLATES. 709 
ception of the relations of the beds, so far, at least, as the valley of 
the Kenmare river is concerned. 
Fig. 3.—Plan and Section in the Tahilla river near Sneem, showing 
junction of Carboniferous and Glengariff Beds. 
Plan. 
Note.—The obliquity is perhaps slightly exaggerated in the plan. 
Section. 
a, Purple slates, cleavage vertical (Glengariff slates), dip uncertain. 
6, Hard grey grits, with bands of slate resting with apparent unconformity on 
the purple slates. 
5. Glengariff SecttonThe rugged promontory which separates 
Kenmare river from Bantry Bay, and which is deeply indented by 
Glengariff and Adrigole harbours, falls short of the elevation of 
the Reeks, but is perhaps not less interesting to the physical geo- 
logist than the Reeks themselves, owing to the examples it affords 
of contortions of strata, atmospheric waste, and glacial erosion. The 
hard and massive beds of grit, often naked or scantily clothed with 
herbage, are thrown into several grand folds, and often broken 
off along scarped and serrated ridges, or isolated pyramidal hills, 
as represented in the following section (fig. 4). Notwithstanding 
the apparently complex arrangement of the beds, the general struc- 
ture of the ridge is that of a crenulated arch, in which the lower 
beds of grit rise to the surface in the centre, and the upper beds of 
purple slate occupy the sides, dipping beneath the Carboniferous 
beds which form the shores of the bays and the sides of the valleys 
which lead down to them. 
Excellent sections, showing the junction of the “ Glengariff 
beds” and the Lower Carboniferous or “Coomhola beds,” are 
shown both along the Bantry and Glengariff road and in the banks 
of the Coomhola river. Both tell the same tale, namely, the junction 
of the former with the Carboniferous beds, and consequent absence 
of representatives of the Old Red Sandstone. On following the 
section along the Bantry road, we had little difficulty in determining 
the exact line of division between the two formations, which may 
be observed near the bend of the road, about 14 mile S. of Glen- 
gariff Church. Here the beds of purple slate and hard coarse green 
srit of the Glengariff series give place to the olive-green slates and 
