MtDt)LE CHALK—COAST OP DEVOK. 
443 
Again, Mr. Whitaker, who visited the quarry in 1868,* gives 
the following account of the section : — 
feet. 
Thickly-bedded massive (chalk), with a rough layer on 
top (mostly forming a hard even cap) - - - - 15 or more 
Massive, more crystalline bed (Freestone) - about 10 
More splintering, and with dividing lines of a darker 
tint -------- about 8 
? Chalk Marl.—Bottom part with a few quartz grains 
and black grains. 
It is clear, therefore, that beneath the floor of the present quarry 
there are a few feet (probably 4 or 5) of hard and rough chalk with 
a basement bed containing quartz and glauconite. Probably 
these beds resemble those seen in the cliff s of Beer Harbour rather 
than those of Hooken cliff*, but it would be interesting to know 
whether there is any representative of the calcareous greensand, 
No. 13 of Mr. Meyer’s succession. The total thickness of the Ilk > 
Cuvieri zone in Beer quarries may be set down at 34 or 35 feet. 
The compact limestone which I take as the summit of the Rh. 
Cuvieri zone is a remarkably hard and compact rock resembling 
some varieties of Chalk Bock, it is thickest and best developed 
along the western face of the quarry, seeming to pass into a more 
nodular kind of rock toward the east. The beds have a dip of 
about 4° to the east. 
The disappearance of the RKynch. Cuvieri zone in the Hooken 
cliffs is quite a local phenomenon, for the beds set in again with their 
usual characters to the west of Branscombe Mouth. They can be 
reached in several places between a quarter and half a mile west 
of the Coastguard Station, and the following succession can be 
made out: — 
Soft white chalk, with layers of flint nodules at intervals of 
1 to l|- feet apart (base of Terebratulina zone) - - 
Hard rough chalk, very hard at top, with yellowish 
crystalline lumps throughout, Cardiaster pygmceus , 
Ter. gracilis var. lata , and Cidaris Sorigneti 
Softer white chalk with few nodules, but with one 
layer of small flints, Cidaris spines - 
White chalk streaked with yellowish-grey, contain¬ 
ing many small hard nodules and a layer of black 
flints. 
Bough yellowish chalk full of hard yellowish lu mps, 
Cardiaster pygmceus and Cidaris Sorigneti - - 
Yellowish glauconitic chalk with some quartz- 
grains, Ammonites [Prionocydi<,s] Neptuni 
j! 
§ >o 
* t 
o 
a ^ 
o 
S] 
feet. 
15 
The thickness of the zone here, therefore, is about 25 feet, so 
that it must come in again as rapidly as it thinned out. It will 
be noticed that the streaky chalk which appears to occupy the 
place of the Beer Stone contains a layer of flints, which thus occur 
much lower down than they do near Beer. 
* Quart. Jo urn. Geol. Soc., Vol. xxvii. p. 9 b (1871). 
