LOWER CHALK — YORKSHIRE. 
233 
Mr. Hill did not recognise the Totternlioe Stone here, but it 
should occur a few feet below the pink chalk. Some of the beds 
seem to have slipped a little out of place. 
Lastly, there is the fine section of the Speeton cliffs, of which 
the following account is compiled from that given by Mr. Hill: — 
The first course above the Chalk Marl, from which it is separated 
by a layer of grey marl 3 inches thick, is a bed of grey chalk 2 feet 
thick, rather nodular and hard. This is the “ Grey Bed ” or Tot- 
ternhoe Stone, and is markedly greyer than the beds above and 
below. It can be followed from Nanny Goat's House, with the 
dip of the beds to the south-east to the point where it disappears 
below the beach. It retains its solid appearance, and does not 
break up under the influence of weather or of waves ; but the lower 
6 inches splits readily into flakes and graduates into the under¬ 
lying layer of marl. It contains Pecten orbicularis, Holaster sub- 
globosus, Lima echinata, and other fossils, but they are not in a 
good state of preservation. 
For 20 feet above this bed the chalk is very hard and nodular 
or lumpy ; the lumps are separated by marly material, and the 
whole is divided into beds by strongly marked marl bands. The 
marly part is generally of a bluish or greenish colour, but at Nanny 
Goat’s House the lowest 5 or 6 feet are coloured pink. Eastward, 
however, this colour band passes to a lower horizon. 
Above this chalk is a 3-feet bed of greyish-buff chalk with darker 
grey veins and streaks. It weathers out along the cliff as a massive 
and solid bed, and is separated from the chalk below by a layer 
of marl, in which Ostrea vesicularis, Terebratula biplicata, and Ter. 
semiglobosa are very abundant. 
To this succeeds 19 feet of hard, white, fairly smooth chalk divided 
into regular courses by thin seams of shaly marl. The total thick¬ 
ness of this zone at Speeton is therefore 44 feet. 
The Belemnite Marl. 
Inland, along the course of the main escarpment, this bed seems 
to consist entirely of grey marl and yellowish marly chalk generally 
in two courses only, but at Speeton it has the Midland facies of two 
marly layers separated by a course of hard, white chalk. 
The first place north of the Humber where these beds are ex¬ 
posed is the Greystones Pit, three cpiarters of a mile north of Melton. 
Most of the face is obscured by talus, but near "the top there is a 
band of laminated marl, almost black in the centre, dark grey at 
the top and bottom. 
The next exposure is in the railway cuttings east of South Cave, 
and the Belemnite Marls come down to the level of the line, about 
85 yards west of the bridge near the entrance to the tunnel under 
Sugar Loaf Hill, where the section, as described by Mr. Hill, is: — 
