CROMER EOREST-BEDc 
170 
Between this point and the road the beds are ver}^ sandy and 
gravelly. The composition of the gravel is 
Unworn and sab-angnlar flints - - -• - 82 
Quartzite pebbles (often large) - - - - 73 
Flint pebbles - - - - - - - 56 
Quartz - - - - - - - -32 
Hard sandstone (Neocomian ?) - . - - 6 
Chert 2 
Black grit - - - - - - - 2 
Close to the site of the old Coast Guard Station at Bacton 
(marked on the Map) marine shells are met with for the last 
time as we trace the strata southward; though one or two 
cetacean bones have been found in the corresponding deposits in 
Suffolk. The Bacton section showed :— 
Soil 
1st Till 
Upper Fresh¬ 
water Bed ? 
Forest-bed 
(estuarine). 
Feet. 
2 
- Stony loam - - - - - 4 
r Loamy sand - - - - - 2 
Sandy loam, bedding obscure 
L Laminated sand and clay - - - 1 
r Laminated clay, with a few thin seams of 
s gravel and sand, full of Mytilus edulis 
I and Littorina littorea - - - 5| 
These seams with marine shells were first described by the Kev. 
C. Green in 1842,^ but at that time the exposures appear to have 
been much more fossiliferous than at present; the cliff has pro¬ 
bably now been cut fully 100 yards further back, and the details 
of the section have quite altered. Green mentions the following 
species as occurring here :— 
Littorina littorea. 
Mytilus antiqnorum [=M. edulis, Linn]. 
Scalaria groenlandica. 
-— miuuta. 
Astarte plana [=A. borealis, Chem.]. 
Fusus striatns [=Trophon antiquus, Miill.]. 
-contrarius [-, reversed var.]. 
Cardium, fragments. 
Turbinolia. 
To the above list Prof. Prestwich adds Littorina riiJAs and 
Purpura lapillus.f 
The next section of importance is seen near the present Coast 
Guard Station at Bacton. At this pointy and for several hundred 
yards on each side, the Upper Freshwater Bed again appears 
immediately under the Till;— 
Soil 
Intermediate Beds. Laminated marl - - - - 
1st Till - Stony Boulder Clay, with little chalk 
r Mixed clay and sand, with freshwater shells: 
Upper Fresh- J Succinea jpiitris, Bythinia tentaculata, 
water Bed. | Gy das cornea - - - _ 
L Sand and loam - - - . 
r Gravel, with thin clay seams 
Forest Bed J Laminated blue clay - - - - 
(estuarine). | (Strata hidden by beach) . . . 
L Laminated greenish clay 
Feet. 
2 
1 
7 
24 
3 
5 
8 
1 
Geology ol' Bacton, p. 5G. 
f Quart. Journ, Geol. Soc., vol. xxvii., p. 465. (1871.) 
