'80 



E. HILL AND T. G. BONNE Y ON Til K 



agglomerate of the centre of High Towers resemble these in some 

 respects ; but there the weathering renders the fragments exceedingly 

 conspicuous. 



18. The section (fig. 5) given by the great quarry in Bardon Hill is 



Fig. 5. — Section at Bardon. (Scale about 4 inches to 1 mile.) 

 This section cuts the beds very obliquely. 



w.s.w 



E.N.E. 



Eailway. Birch Tree Inn. 



Quarry. 



Crest of Hill. 



the best in the forest, but is nevertheless rather obscure. The small 

 patch marked as Greenstone near Robin Butts, cannot now be seen. 

 The quarry on which it was founded was "small and deserted" in 

 Jukes's time, and is now filled up. He describes the stone as " com- 

 pact earthy trap-rock, having much the appearance of an altered 

 rock." The exposures at Hill Top are well seen in the back yard 

 of the Birch Tree Inn, where banded slates and grits, much shattered, 

 dip at the steep angle of 80° to W.S.W. An old pit in a neighbouring 

 garden shows also slates with gritty bands, and a similar dip. The 

 cleavage is rather imperfect. From this point to the mouth of the 

 quarry is a distance of about a quarter of a mile, with no rock ex- 

 posed. Then the ground begins to ascend rapidly, forming a long, 

 high, and narrow ridge, rising at its centre to the highest elevation 

 of the county, 902 feet. The dip of the rocks is seen in two shaly 

 bands cut by the quarry, which strike E. 15° S. or E.S.E., and 

 dip, at a steep angle of about 60°, to N.N.E. The lowest visible 

 rock is in a small knoll in the wood to the right of the entrance to 

 the quarry ; it is a breccia of large fragments of greenish slate 

 in a coarse ashy matrix, not very unlike that of the Bradgaie 

 breccias. The rocks at the entrance to the quarry, which cannot 

 be many yards above these, are also breccias, but are much indu- 

 rated, of much finer matrix, and with included fragments of entirely 

 different material, more resembling those at Whitwick. The matrix 

 is ashy, but variable, generally greyish, and speckled. The included 

 fragments have very ill defined boundaries, and are usually darker. 

 Then follows the first shaly bed, which, as well as the subsequent 

 one, is so much rotted by the percolation of water, that it is difficult 

 to say what its constituents are. We have been inclined to think 



