436 
LOWER OOLITIC ROCKS OF ENGLAND : 
Cornbrasli 
Bubbly aud sandy marls, the concre- 
tionary masses containing large 
Oysters - 
Flaggy earthy and nodular limestones 
and irregular beds of sandy marl 
with Pholadomya 
Bluish-grey limestones, merging down- 
wards into shaly marls 
Hard bluish-grey earthy limestone with 
Rliynclione'.la 
Bubbly and shelly limestones, with 
large Pholadomya,, Avicula echinata, 
Ostrea, &c. 
_Irregular shelly limestones 
FT. IN. 
FIG. 129. 
Section of Cornbrash at the north end of Radipole Lake, 
Wcymouth. 
At one point the beds are faulted, with a downthrow of about 
6 feet on the west, as shown in the accompanying section (Fig. 
129). Their thickness may be 30 feet. 
The beds have been quarried in many places for lime-burning 
on both the north and south sides of the Weymouth anticline, 
near Langton Herring and West Chickerel ; and they are shown 
on the borders of the Fleet near East Fleet, and at Wall Down, 
by the Swannery at Abbots-bury. 
The junction of the Cornbrash with the Kellaways Beds 
(Oxford Clay), was shown to the south of Rodden, in a pit on the 
east side of the road leading towards Langton Herring. The 
section was as follows : 
Kellaways 
Beds. 
Cornbrash 
f Bluish mottled clay with Waldheimia 
< and Serpula. 
I Sandy and shelly shale, 
f Greyish -brown earthy limestone in 
" \ solid beds, exposed to depth of 
FT. IN. 
Other sections of Cornbrash have been exposed near Puncknoll, 
and on North Hill, between Burton Bradstock and Bothenhnmpton. 
In a lane-cutting south of Bothenhnmpton, the junction with the 
