INFERIOR OOLITE : MAIDWELL. 
187 

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) 3 
L 6 
2 6 
I know, is a Trigonia. The following section was shown at the 
Lime-kiln at Maidwell : 
FT. IN. 
f Brown stony soil 
I Chalky Boulder Clay - - 3 to 
m i n . } Brown ferruginous sandy layer 1 to 
Glacial Drift -<> WMte &nd ^ own Band >. . l to 
Rubble of limestone, oolite, ironstone, 
I &o. - - - 
fBrown limestone 
| Pale earthy, and obscurely oolitic, lime- 
^ stone - 
I Brown sandy limestone (like Chipping 
L Norton Limestone) 
The terra Maidwell Limestone was used by Farey, and 
Parkinson in 1811, as one of the divisions of our strata.* 
There are few sections in the country to the east, but areas of 
limestone have been traced between Draughton and Harrington, 
and to the south-east, near Old or Wold. Calcareous beds also 
occur in the Northampton Sand ; and near Draughton, these beds 
have been burnt for lime.t 
Licolnshire 
Limestone. 
Wellingborough, Kettering, and Rockingham. 
North- west of the Midland Station, at Wellingborough, ironstone 
has been worked over the ground south of the Finedon road ; it 
is now nearly exhausted. About 4 feet of ironstone was worked 
(1889), there being about 4 feet of useless stone below, and then 
blue clay (Upper Lias). The stone worked is at the surface, and 
is itself poor in places, and joggled with gullies, &c. The best 
stone, 10 to 11 feet thick, was formerly worked about a mile 
N.N.W. of the railway-station. This had no " cover/' and indeed 
the covering of Estuarine beds seems to make little or no difference 
to the quality of the ironstone. 
At the Kettering Ironstone quarries the following section was 
exposed : 
Soil 
Lower Estuarine 
Series and 
Northampton 
Sand. 
Upper Lias 
Brown clay and rubble - 
Yellow and white sand - 
Grey bedded sand and sand-rock, car- 
bonaceous and ferruginous - 
Grey carbonaceous sand 
Dark grey clay and sand 
Grey sand passing down into laminated 
carbonaceous sand and clay, and 
thence into dark grey clay (1 foot) - 
Grey clay and sand - 
Yellow and white sand with plant- 
remains - 
Sand-rock - - 3 to 
Ironstone, about 6 feet~) 
worked ; the green beds con- 
sidered useless 
Ironstone-beds, not used, 3 or 
4 feet ; with nodular bed at 
L base --. 
- Blue Clay. 
FT. 
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3 
1 
3 
1 
IN. 
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Oto 12 
* Farey, Agric. Derbyshire, p. 114; Parkinson, Organic Remains, vol. iii. p. 445. 
f Judd, Geol. Rutland, p. 30, 
