154 
THE CRETACEOUS ROCKS OF BRITAIN. 
ft. 
8 
7 
26 
The lowest blocky chalk is evidently a continuation of that in 
the other quarry. The nodular beds contain Ammonites (? Austeni) 
and A. sussexensis). They show a dip of 6° or 7° to the south-east. 
The Belemnite marls cross the road about 100 yards further up, 
and from them Mr. Rhodes got three specimens of the character¬ 
istic Actinocamax. 
On the north side of the Vale of War dour, and north of 
the hamlet of Ridge, a quarry by Pitchpenny Clump shows 
the Melbourn Rock resting on a layer of grey marl, with 
greyish chalk below, but the rest of the section was obscured by 
talus when visited in 1890. 
A similar section is exposed in a chalk-pit about a mile north-east 
of Dinton, grey blocky chalk succeeded by a broken layer of grey 
marl passing below the Melbourn Rock, which dips north at about 
20 °. 
No good exposures of these beds were seen near Warminster, but 
whitish blocky chalk is shown near the limekiln north of the town, 
and cannot be far below the Melbourn Rock. 
The road section near Tinhead has been already given. 
Hard greyish chalk, with indefinite bands of very hard nodular 
grey chalk - -- -- -- -- - 
Massive compact blocky chalk, parting along curved surfaces, 
seen for 
