VOL. XVII. (2) NORTH AND MID COTTESWOLDS 257 



THE NORTH AND MID COTTESWOLDS AND THE 

 VALE OF MORETON DURING THE GLACIAL EPOCH 



BY 

 JOSEPH W. GRAY, P.G.S. 



CONTENTS 

 (The following is an abstract of the paper) 



I. Introduction 

 II. Classification of the Superficial Deposits _ . . 



III. Mammalian Remains and Early Man 



IV. The Avon Valley Drift . . 

 V. Origin of the Drift 



VI. Transport of the Drift 

 VII. Local Snow and Ice 



Page 

 257 

 259 

 266 

 267 

 269 

 270 

 274 



I. — Introduction 



The superficial deposits of Gloucestershire have been 

 described by Buckland/ Strickland/ Murchison,^ Phillips/ 

 Hull/ Symonds/ E. Witchell/ W. C. Lucy/ Dr C. Callaway/ 

 Mr L. Richardson/" and others. Of these contributions, 

 Lucy's are the most notable. 



In most of the attempts to explain the origin of the depo- 

 sits in question an invasion by one or more great ice-sheets or 

 a submergence holds a prominent place. As neither of these 

 hypotheses appears to me to account for the whole of the 

 phenomena, I have carefully examined the ground and at- 

 tempted to ascertain whether more satisfactory explanations 

 could be offered. 



1 Trans, Geol. Soc. (1821), vol. v., pp. 506-544 ; Reliquim Diluviana: (1823), pp. 196-7 and 249-57. 



2 Proc. Geol. Soc, vol.ii., pp. 5, 95 and iir. See also (itd., vol. vi., pp. 545-55 ; Analyst (1835), 

 vol.ii., pp. i-io, and " Memoirs of H. E. Strickland," by Jardine (1858), pp. cl.\iv.-clxvii., 79-110 and 

 139-44- 



3 Proc. Geol. Soc., vol. ii., {1838) pp. 230-3 ; Silurian System (1839) pp. 527-8. 



4 Mem. Ge^l.Surv., vol.ii., pt. i (1848), pp. 13-15, 125 ; "Geol. Oxford and Valley of the Thames" 

 (1871), pp. 458-65. 



5 Quart. Journ. Geol. Soc, vol. xi., pp. 477-96 ; Mem. Geol. Surv. ; " Geol. Country around 

 Cheltenham" (1857), pp. 85-96. 



6 Proc. Cottesw. Nat. F.C., vol.iii., pp. 31-9 ; ibid., vol. vi., pp. 247-56 ; Severn Straits (1883). 

 P- 25- 



7 Proc. Cottesw. Nat. F.C, vol. iv., pp. 56-9 ; ibid., vol. vi., pp. 146-153 ; " Geology of Stroud" 

 (1882), pp. 85-99. 



8 Proc. Cottesw. Nat. F.C, vol. v., pp. 71-142 ; ibid. vol. xi., pp. 6-14, ihid, vol. vii., pp. 50-f i. 



9 Ibid., vol. xis-., pp. ii8, 183-94, Geol. Mag., May, 1905, pp. 216-19. 



10 Proc. Cottesw. Nat. E.G., vol. xvi., pp. 28-9. Geol. Mag., vol. xx. (1908) pp. 528-9. 



