304 
LOWER OOLITIC ROCKS OF ENGLAND : 
THICKNESS. DEPTH. 
Soft shale and clay 
Black shale - 
Eha3tic Beds Grreen Marl - 
and New J Sandstone 
Bed Sand- } Green gritty marl 
stone Series. Limestone 
I Variegated marls 
L gypsum 
Coal-measures - 
FT. 
32 
1 
6 
1 
50 

with 
- 375 
- 226 
IN. 




9 
3 
11 

FT. 
749 
750 
756 
757 
807 
808 
1184 
1410 
IN. 
1 
1 
1 
1 
10 
1 


The details of the Burford section are given partly from a record in the 
Museum of Practical Geology, communicated by Lieut.-Col. F. Bolton, 
R.E., and partly from another MS. The fossils were identified by 
Mr. Etheridge. Particulars have also been published by Mr. C. E. 
De Ranee,* and by Mr. Etheridge :f the details varying in each case. 
In the Warwick Museum there is a core of " Coal shale " from a depth 
marked 1,174 feet. 
The beds of Great Oolite to a depth of about 50 feet, no doubt 
belong to the Marly beds of the Upper Division. Prof. Hull has 
remarked that the total thickness of this upper portion is probably 
little short of 100 feet :J it is quite 75 feet, and the-full thickness 
of the Great Oolite may not be less than 100 feet. 
North-west of Burford Signett, the Upper Division of the 
Great Oolite was shown in the following section : 
o 
O^ 
White 
Limestone. 
f Close-grained rubbly oolite 
j White oolitic limestone 
L Do. more earthy 
flrregular bed of grey and") 
greenish carbonaceous 
FT. 
4 
IN. 

Marly Beds 1 
3 or 4 
and pinkish f 
limestone slightly ooli- j 
L tic - -j 
Brown more or less shelly oolite : 
passing down probably into Free- 
stone - - -30 or 40 
The lower beds are hard and are employed for building-pur- 
poses. The beds on the whole are much fissured and tumbled, as 
if faulted. 
The upper beds of Great Oolite, together with clays that 
present some of the characters of the Great Oolite Clay, and 
some of the fossils of the Bradford Clay, were shown, as follows, 
in a quarry about half-a-mile south-west of Burford church : 
FT. IN. 
Brown clayey and stony soil - 1 
^"Grey, greenish-grey and brown clay, 
with thin layers of gritty and shelly 
limestone : Avicula, Ostrea acumi- 
J tiata, 0. lingulata, 0. gregaria, 0. 
| Sowerbyi, Rhynchonella, Serpula, &c. 3 6 
1 Ferruginous marly and racy bed, with 
interrupted masses of hard brown 
[_ shelly oolite at base - ---10 
* Rep. Brit. Assoc. for 1878, p. 384 ; Trans. Manchester Geol. Soc., vol. xiv. 
p. 437. 
f Pop. Science Keview, ser. 2, vol. iii. p. 290. 
J Geol. Cheltenham, p. 64. 
Forest Marble 
(= Bradford 
Clay P) 
