368 



DE. A. H. COX ON A LONGilTXDIAN 



[Sept. 19 1 2, 



.1: 



c. s 



•M 



.0 c* 



5 il 





I 



is highly improbable, 

 in the light of the fol- 

 *jj 11 11 lowing combination of 



^ '''' facts:— 



(1) The Bi-ampton Grits 

 have a high westerly 

 dip, as previously 

 tueationed. 



(2) Less than 200 yards to 

 the east are Letton 

 Grits and Conglome- 

 rates [Bala ?],! which 

 dip gently eastwards 

 and rest uuconform- 

 ably upon the Cam- 

 brian. 



(3) No Bala Beds actually 

 intervene between the 

 Brampton Grits and 

 the Cambrian. 



Thus, taking these 

 facts into consideration, 

 it would seem that the 

 Brampton Grits and 

 Conglomerates cannot lie 

 unconformably upon the 

 Cambrian and Bala : nor 

 is the junction to be 

 explained by normal 

 faulting. Further, al- 

 though this Brampton - 

 Grit series bears a litho- 

 logical resemblance to 

 the lowest Upper Llan- 

 doverj' iieds as seen in 

 the nearest outcrop at 

 Corton, near jSTash Scar 

 and Presteign, 6 miles 

 south-west of Pedwar- 

 dine, the bedding in 

 these lowest Upper Llan- 

 dovery Beds is always 

 quite apparent and fossils 

 occur in abundance ; 

 while the coarse gritty 

 beds there soon pass into 

 1^ •o'^ /\^^^ \ \ ' \\'x\^ V' ^ finer-grained Saud- 

 is ^ A''-^-^^''-'\^-V'-\'-'' 1 stone, a type which 



is nowhere represented 

 among the Brampton Grits and Conglomerates. Moreover, this 

 Brampton-Grit series shows abundant signs of having been affected 

 1 See p. 370 postea. 



