CROMEK FOREST-BED. 
169 
4 feet above the beach, in which it occurred. The bones are here 
generally found in a bed about 5 feet lower, seen on the foreshore 
opposite. 
Half a mile from Mundesley the jaw of glutton, figured by Mr. 
E. T. Newton,* was found about high-water mark. Nearly a 
mile from Mundesley mussels are found in the Forest-bed; thus 
proving that the strata are still partly of marine origin. About 
three-quarters of a mile south of Mundesley the Lower Fresh¬ 
water Bed was again seen for a few yards. It here consisted of 
peat full of matted reeds, seeds of bog-bean, and elytra of 
beetles, but Trapa natans was not found. 
At a mile and a quarter from Mundesley the Till suddenly 
ploughs through the beds to beneath the sea-level, but just north¬ 
west of the point where the Forest-bed disappears the subjoined 
section was observed :— 
2iid Till 
Forest-bed 
(estuarine). 
- Boulder Clay, very chalky. 
{ Laminated clay and sand 
Beds of clay-pebbles, vfi%h.Mytilus, Littorina, 
Balanus, teeth of Arvicola, and limb-bone 
of Trogontherium - - - - 
Feet. 
5 
2 
For nearly half a mile south of this point no sections are to be 
seen, but where Pliocene strata reappear the character is un¬ 
altered. About 80 yards further they become more gravelly, 
and show false-bedding with a northerly dip. The gravel is 
composed of nearly unworn fiints, and flint, quartz, quartzite, 
clay, and clay-ironstone pebbles, with rarely cherty sandstone 
(Neocomian ?), green coated flints (Eocene), pyrites containing 
wood, and jet; there is also a little drift wood, some cakes of 
])eat, and small selenite crystals. The only fossil found was a 
fragment of elephant’s tusk about 5 inches in length. 
In the neighbourhood of Bacton the Forest-bed shows extremely 
rapid changes in lithological character ; and as the upper part 
rises 10 or 15 feet above the level of the beach, it can easily be 
examined, and may be described generally as a mass of false- 
bedded gravel and sand with lenticular seams of laminated clay, 
clay-pebbles, or lignite, A few sections taken here and there will 
be sufficient to show the ordinary character of the deposits. 
At 350 yards north-west of the first road to Bacton village 
the following section was noted :— 
Soil 
Valley Gravel 
Forest-bed 
(estuarine). 
Feet. 
------- to 2 
Gravel and loam contorted together, and 
< squeezing up the laminated clays of the 
L Forest-bed - - - - - 7 
f Laminated clay and sand, with a bed of wood 
I at the base - - - - - 8 
! Clay-pebbles and gravel, with large unworn 
' flints, quartzite pebbles, &g. Numerous 
mammalian bones - - - - 3 
Laminated clay, clay-pebbles, and lignite - 3 
* Geol. Mag., dec. II., vol. vii., p. 424 (1880) ; and The Vertehrata of the Forest 
Bed Series (^Memoirs of the Geological Survey'), p. 17. 
