334 
LOWER OOLITIC KOCKS OF ENGLAND : 
FT. Ix. 
Pale grey ^and white soft limestones 
and marls ; shelly in places - 3 6 
Tough pale-grey gritty and shelly lime- 
stone - 6 to 1 10 
Great Oolite -^ Brown and greenish clay, with Ostrea 
Sowerbyi, and ferruginous gritty 
marl. 
Pale marl passing down into pale oolitic 
limestone, the lower part ferruginous 7 
These beds of Great Oolite may be compared with those numbered 23 
to 25 in the railway-section (p. 330). 
In a quarry north-west of Bacon Farm, south of Swalcliffe, 
the beds were highly inclined, dipping towards the south, and the 
following section was shown, (Fig. 93) : 
Soil 
Forest Marble 
Great Oolite 
- 9. Brown clay, with a few stones 
"8. Bubble of oolite ... 
7. Greenish clay with " race " - 
Blue shelly and slightly oolitic lime- 
stone (like Forest Marble) - 
J>. Shaly clay, with Ostrea at base 
4. Compact pale-grey limestone, be- 
coming marly and shelly, blue and 
oolitic towards the base, where it 
resembles Forest Marble 2 2 to 
3. Fossil Bed: Clay with indurated 
marly layers, Cardium, Gervillia, 
Modiola, Ostrea Sowerlyi, Unicar~ 
dium varicosum, Terebratula maxil- 
lata, and Lignite ... 
2. Pale compact limestone, with ferru- 
ginous stains, and some Gastero- 
pods .... 
1. Marly oolitic and shelly lime- 
stones - 
FT. 
3 
1 
5 
1 
1 
IN. 




3 
8 
FIG. 93. 
Section at Swalcliffe, south-u-est 
of Banbury. 
hill Farm. The section was as follows : 
I take these beds to belong 
to the upper part of the Great 
Oolite, and the Forest Marble ; 
but absolute confidence in 
correlation is not, in my 
opinion, possible. A little to 
the east of this quarry, a 
small excavation showed pale 
limestone with brown oolitic 
grains, yielding Nerincea and 
other Gasteropods also Mya- 
cites, Niicidci, Pholadomya, 
and Corals. 
The upper beds of the 
Great Oolite were also shown 
in a quarry to the north-west 
of Epwell, and east of Broom- 
