162 
CROMER FOREST-BED, 
them are various sedges, docks, and the buttercup. The mollusca 
call for no remark, since they are all, except Hydrohia marginata, 
common species at the' present day in Norfolk. The following 
section of these deposits was seen at the foot of the cliff about 
100 yards south-east of Sidestrand Church ; two measurements 
were taken 15 yards apart;— 
Feet. 
Boulder Clay, with uneven base. 
P / False-bedded sand with thin blue clays and 
X a little carbonaceous matter - - 3| to 7 
r Blue bedded clay, the lower part stony : Pi- 
-j sidium amnicum, JJnio or Anodon - - 4 to 3 
L Cravelly blue clay with TJnios - ■ 0 to 1 
/ Ferruginous loamy gravel, with Mya truncata 
X and Tellina haltliica in the position of life 1 to 0 
Upper Fresh¬ 
water Bed. 
Forest-bed 
(estuarine). 
A few feet in each direction the gravel with Mya truncata cannot 
be found; it is apparentl}^ cut out by the Freshwater Bed. In 
one place the shell of the Mya has been entirely dissolved away, 
but the tough siphon-tubes are well preserved, looking much 
like portions of decayed roots of trees. 
The Freshwater Bed can now be traced continuously for about 
320 yards, when it is suddenly cut off by the Boulder Clay. 
As it constantly shows slight variations, one detailed section 
must here suffice. At 180 yards north-west of the trough 
occupied by Boulder Clay the subjoined strata were observed 
in the course of tlie Survey :— 
Boulder Clay. 
Leda^jalis y clays - - - - 2 
r Laminated loam - ' - - - 1 
Upper Fresh- J Blue carbonaeeous clay, bedding obscure - 3| 
water Bed. | Blue stony loam, with freshwater shells, 
L seeds, and drift-wood - - - 1 
Forest-bed 
(estuarine). 
fClayey pan, with driftwood {Mya not ob- 
I served, but may have entirely decayed) - 
( (Strata hidden by beach) . - - 
1 Laminated clay, clay pebbles, lignite and a 
[_ few bones - - . . . 
IJ 
4 
1 + 
A few yards from this spot an attempt was made to reach the 
Weybourn Crag by boring, but without result, as the Forest- 
bed was gravelly and sandjr and full of water. The boring 
commenced in the blue clay at the base of the Upper Fresh¬ 
water Bed and penetrated the strata marked as ‘'hidden'’ in the 
last section ; these consisted of black gravelly sands. 
For nearly half-a-mile no sections can be seen, for the Boulder 
Clay cuts through the beds to beneath the sea-level. When the 
Pliocene beds reappear, the character of the upper portion of the 
section has a good deal altered. 
At 100 yards south-east of the old groyne at Trimingham 
(there is no other landmark visible by which to fix the spot) we 
have the .section shown in Fig. 39. 
