Gunn — Glacial Deposits on the East Coast. 371 



NoKwiCH Geological Society. — The Order of Succession of 

 THE Pre- Glacial, Glacial, and Post-Glacial Strata in the Coast 

 Sections of Norfolk and Suffolk, (with especial reference to a sec- 

 tion at Happisburgh, in Norfolk, and Gorton, in Suffolk). By the Eev. 

 John Gunn, F.G.S. — Mr. George Maw, in an article "On the relative 

 ages of the coast Boulder-clay of the Eastern Counties, and that of the 

 higher ground," ^ expresses his belief that there is no evidence of direct 

 superposition of the high-level Boulder-clay upon that of the coast. 

 " If," says Mr. Maw, " the higher clay were more recent than the lower, 

 surely some cases would occur in which direct superposition was 

 evident. But there is no coast section exhibiting the sequence of the 

 high-level directly over the low-level clay, with the intervening sand 

 bed." This statement excited surprise, because the author had re- 

 peatedly seen instances of such supei-position in the cliffs of Corton 

 and Horton, near Gorleston, in Suffolk ; and because the late Mr. 

 Trimmer, in a paper in the Quarterly Journal of the Geological 

 Society, June 17, 1857, corroborated his observations. Additional 

 evidence has been afforded by the recent fall of part of the cliffs at 

 Happisburgh. An upper and a lower Boulder-clay, with stratified 

 sands and clays intervening, have been exposed about a quarter of a 

 mile north of the Preventive Service Station, beginning where the 

 cliffs rise to an eminence of 50 feet, and extending three-quarters of 

 a mile to where they are denuded to a lower level near Ostend. 



The following is the section : — 



Feet. 

 No. 1 The Warp 4 



2 Post-glacial sand, clay, and gravel ... ... ... 14 



3 Upper Boulder-clay 10 



4 Middle drift \ g 



Stratified clay and sand ... ... / 



6 Lower Boulder-clay ... ... ... ... ... 9 



6 Laminated series ... ... ... ... ... 4 



7 Forest bed on the beach 



49 

 This section corresponds with that at Corton, and as they repre- 

 sent the several strata in their normal and undisturbed condition, 

 the study of them may serve as a key to their highly disturbed and 

 contorted state near Cromer. 



With respect to (No. 2) the Post-glacial sand, clays, and gravel, 

 from their position immediately above the upper Boulder-clay, they 

 might be expected to yield the remains of the Elephas primigenius ; 

 and such is the case. Mr. Gvmn had obtained a good upper molar 

 from this same bed in the parish of Witton, about two miles inland. 

 The teeth and bones fall from these upper Pre-glacial beds upon the 

 beach, and become intermixed with those derived from the forest 

 bed, and their occurrence led the late Dr. Falconer to infer that the 

 E. primigenius was a denizen of the forest bed. 



Mr. Gunn gave a general account of the Glacial Beds and the 

 Laminated Beds, and then made some observations on Mr. Taylor's 

 recent researches on the Crag Fossils. 



1 See Geol. Mag. Vol. IV. March, 1867, p. 97. 



