GREAT OOLITE SERIES : KETTERING. 
405 
FT. 
1 
Upper Estuarine 
Series. 
IN. 


The Upper Estuarine Series in this neighbourhood, between 
Geddington.and Graf, ton-tunder- Wood, is thus described by Prof. 
Judd*: 
_Soil 
"Pale bluish-white clay, with carbonace- 
ous markings - 2 to 
Indurated, variegated, sandy clay 
(bright yellow, pale blue, ash- 
coloured, pink, crimson, and 
greenish), occasionally traversed by 
ironstone laminae 
Irregular ferruginous band 
Ash-coloured sands, with irregular clay 
seams - - - - - 
Fine white clay, with carbonaceous 
markings - - - 3 to 
Band of ironstone-nodules (ferrugin- 
L ons jmnction-band) 
We now enter an area that has been fully described by Prof. 
Judd, and it will be necessary to record only a few of the principal 
sections, to show the characters of the strata. 
Prof. Judd states that at Great Oakley the beds of the Upper 
Estuarine Series are dug for brick-making, but, at the time the 
district was surveyed, there was not, unfortunately, any clear 
exposure of the strata. The succession of beds here was as 
follows : 
("Alternations of foetid limestone, with Ostrea and 
i other marine shells, and bands of clay also full of 
I oysters. 
f Light-blue, sandy clays, with thin bands of 
laminated, highly pyritous sandstone of a grey 
< colour, exhibiting plant-markings and shells of 
I Cyrena. These clays also contain carbonaceous 
[_ and shelly bands. 
At the excavations at the brick-yard and lime-kiln atBrigstock 
Mill, between Stanion and Brigstock (" Lord Lyveden's pits "), he 
noted the following section : 
Great Oolite. 
Limestone. 
Upper Esfcuarine 
Series. 
Great Oolite 
Limestone (base). 
Upper Estuarine 
Series. 
Lincolnshire 
Limestone and 
Collyweston Slate. 
Soil. 
Oyster-beds (0. Sowerbyi, &c.) - 
Blue clay .... 
Ferruginous band 
White and mottled, sandy clay 
Sandy clays, whitish above and greenish 
below, full of compressed shells 
(Modiola) .... 
Dark mottled clays full of carbonaceous 
markings and plant-remains 
more than 
Whitish, mottled, sandy clay - 
Line of concentric, ferruginous nodules 
Irregularly bedded, sandy limestone - 
Hard marly limestone (Coralline facies 
of the Lincolnshire Oolite) 
Sandy limestone passing downwards 
into calcareous sand - 12 to 
FT. 
1 
6 

2 
3 6 

6 
6 
OP 
14 
* Geol. Rutland, p. 146. 
