PRESTWICH — ON CLIFF SECTION AT MUNDESLEY. 



09 



sands and gravel above it, is 

 there exhibited in fall detail 

 and great variety. It is our 

 type section of the Glacial 

 period. In the interesting 

 account of this coast given by 

 Sir Charles Lyell * in 1840, 

 one place is noticed, where, 

 owing to the wearing away of 

 the cliff considerable changes 

 have since taken place, and 

 a section of importance has 

 been more clearly exposed 

 than it was at the period 

 referred to. I allude to the 

 section at Mundesley, where 

 the Freshwater deposit was 

 thought to be intercalated in 

 the Boulder clay — an anoma- 

 lous position and one difficult 

 of explanation. 



In my paper read before the 

 Royal Society, in May, 1859, 

 speaking of the flint imple- 

 ment-bearing strata at Hoxne, 

 I mentioned Mundesley, 

 amongst other places which 

 are probably synchronous with 

 it. I am therefore desirous to 

 show, briefly, the nature of the 

 resemblance, and to prove that 

 this Freshwater deposit really 

 overlies the Boulder clay and 

 is not intercalated in it. It is 

 not as a matter of controversy 

 that I now bring the subject 

 forward, but merely as one of 

 fact, for I believe that all 

 geologists who have lately 

 visited the spot, including Sir 

 Charles Lyell himself, now 

 view the section in the same 

 light. (See section, fig. 1.) 



I was at once satisfied that 

 such was the order of super- 

 position when first I visited 



ok: 



in £ 



* Phil. Mag. for May, 1840, 

 p. 353. 



