410 
LOWER OOLITIC ROCKS OF ENGLAND : 
At the Water Newton brickyard, Prof. Judd notes the occur- 
rence of both Upper and Lower Estuarine Series, separated by 
4 feet of fine-grained oolitic limestone (Lincolnshire Limestone). 
In a quarry, west of Lilford Lodge, south of Oundle, he observed 
the following section : 
FT. IN. 
Soil 10 
Great Oolite / Bluish-green and mottled clay - 2 
Clay. I Clayey band, crowded with oysters 1 
" Stony band, almost made up of oysters, 
thickness irregular - from 9 in. to 1 3 
Bed of compact stone, very hard, and 
made up of comminuted shells. 
(This bed greatly resembles the 
Forest Marble of Dorsetshire) 
Soft, white, slightly oolitic ^rock, be- 
coming marly at its base, and 
Great Oolite j crowded with oysters 
Limestone. } Stone, entirely composed of commi- 
nuted shells, very irregularly 
bedded, and with little or no clay 
in its partings - 6 
Somewhat softer, marly bed, full of 
oysters, &c., irregular in thickness, 
but averaging - - - 1 
Beds of hard stone, base not seen to 
bottom of pit - - 6 
Prof. Judd states that this pit was formerly dug somewhat lower, 
but no good stone was found under the lowest bed, which rests 
on a marly band with oysters. " It is uncertain whether the 
clays and sands of the Upper Estuarine Series were reached. 
The Great Oolite Limestone in this area is probably about 20 feet 
in thickness." It " is exposed at several points near Stoke Doyle, 
and its junction with the clays below is marked by the occurrence 
of powerful springs." 
South of Oundle, the beds of the Great Oolite Limestone were 
exposed in a number of cuttings on the Northampton and 
Peterborough Railway. Near Barnwell Prof. Judd observed the 
following section* 
Great Oolite 
Clay. 
Blue and mottled clays, with a thin 
band of ferruginous nodules at the 
base - ... 
Bed of laminated, sandy limestone, 
with bands of white marl and thin 
layers of "beef" (fibrous carbonate 
of lime). There are but few fossils 
in this bed, except the ubiquitous 
Modiola imbricata and Ostrea sulru- 
gulosa - 
Beds of hard (" Forest-Marble "-like) 
limestone, entirely composed of com- 
minuted shells, with a few specimens 
of Ostrea subrugulosa 
FT. IK. 
* Gcol. Rutland, pp. 203, 204, 216. 
