CROMEK FOREST-BED. 
155 
tinuing with the same character for a considerable distance both 
east and west, though the thicknesses vary slightly :— 
Boulder Clay, Feet. 
' Sand and loam. T 
Peaty laminated loam with. Salix polaris > 7 
and moss - - - - - J 
False-bedded sand and sandy flint gravel 
with a few marine shells - - „ 4 
Peaty loam with opercula of Bythinia tenta-- 
culata^ seeds, and fish bones *> - 6 
Clay, quartzite-gravel, and sand, with occa¬ 
sional fragments of mammalian bone - 6 
(missing). 
Pan and stone bed, with clay, clay-pebbles, 
and marine shells : Purpura lapillus, Lit- 
torina littorea, Gardium edule, Astarte com- 
pressa, Cyprina islandica, Tellina baltliica, 
_ T. ohliquo;, Mactra ovalis, Mya arenaria - 1 
Chalk with flints. 
The exposure at Beeston is particularly important in showing 
clearly the succession, for all the beds between the Boulder Clay 
and the Chalk are represented, with the exception of the Lower 
Freshwater Bed. At the time this section was noted the cliff 
was exceptionally free from talus, for the erection of groynes at 
Sherringham had caused the beach to be thoroughly cleared away 
for some distance to the south-east. 
A few yards from the stream at Beeston the Pliocene strata are 
cut out by Boulder Clay, and when they reappear half a mile 
further south-east the Freshwater Bed is missing, and the estuarine 
division of the Forest-bed cannot definitely be recognised. 
On the west side of West Kunton Gap (sometimes called 
Woman Hithe), there occurs at the base of the cliff a mass of blue 
clay, belonging probably to the Forest-bed, which, when traced 
towards the Gap, becomes whitish and weathered, and near the 
road is penetrated by small roots. Here it is immediately over¬ 
laid by marine sands with Leda myalis and Mya truncata, in the 
position of life ; but in the centre of the roadway a thin seam 
of peaty sand full of freshwater shells intervenes, and the clay 
is penetrated by small roots (Rootlet Bed). Within 50 yards the 
Freshwater Bed is again cut out by the Leda myalis Bed ; never¬ 
theless a continuous weathered soil can now be traced for at 
least half a mile. About 150 yards south-east of the Gap the 
Freshwater Bed reappears, resting on an eroded surface of 
weathered laminated clay and sand with marine shells. It now 
continues without interruption for 350 yards, with a maximum 
thickness of about six feet. 
The Tipper Freshwater Bed at Bunton consists of peat or 
peaty loam with generally a sandy or clayey base ; and from this 
locality most of the small vertebrate remains, and the freshwater 
shells, in public and private collections, have been obtained. In 
the Appendix is a full list of the fossils; but as the species vary 
according to the nature of the deposit, it is desirable ta draw 
attention to the characteristics of each portion. 
Arctic Fresh¬ 
water Bed 
Leda myalis 
Bed? 
Upper Fresh¬ 
water Bed 
Forest-bed 
(estuarine 
division) 
Lower Fresh¬ 
water Bed. 
Weybourn 
Crag 
