The ironstone here is very fossiliferous in bands ; the fossils noted presenting the same fades as those obtained from the Duston ironstone quarries.
Fossils from the Ferruginous Beds at Glendon.
Avicula Munsteri, Goldf.
Gervillia acuta, Sow. Astarte elegans, Sow.
— lata, Phil. Cardium Buckmani, Mor. & Lyc.
Hinnites abjectus, Phil. sp. Corbicella Bathonica, Mor. & Lyc.
— velatus, Goldf. sp. Trigonia compta, Lycett.
Lima, large sp. (allied to L. grandis, — Phillipsii, Mor. & Lyc. Romer) ? — Sharpiana, Lycett.
Pecten personatus, Goldf. — V-costata, Lycett.
Pinna cuneata, Phil. Unicardium, sp. ?
Pteroperna, sp. ?
Passing northwards, at Barford Bridge, about a mile from Raven Wood, we again cross the meandering valley of the Ise, and again encounter, on the northern escarpment, the same decisive sequence of beds as that near Kettering : —
Great Oolite Limestone.
Upper Estuarine Series.
LINCOLNSHIRE LIMESTONE.
Lower Estuarine Series.
Ferruginous Beds, Northampton Sand.
Upper Lias Clay.
For two miles further north, we pass, upon the high ground, over the Great Oolite Limestone, and, with a slight incline, down a narrow outcrop of the Upper Estuarine Clays, and again on to the Lincolnshire Limestone. This thickens northwards ; so that, at Cottingham, is a section which exposes a thickness (and this not the whole thickness) of 25 feet.
Low down in the section at Cottingham, and in the same position in other sections near Rockingham, is a band containing plants, mostly ferns, among which may be detected fronds in fructification of Pecopteris polypodioides, Lindley ; which zone also occurs at Collyweston and Easton, near Wansford, and elsewhere, in the same position.
In the Park of Rockingham Castle* (the high ridge of which is nearly 250 feet above, and overlooks to the north, the valley of the river Welland, and commands an extensive view into the counties of Leicester and Rutland), I have noted the following succession of beds : —
Lincolnshire Limestone — ft. in. ft. in.
Coarse oolitic beds 10 0
Marly beds (only partly exposed) 5 0
15 0
Northampton Sand —
Lower Estuarine Sands, with argillaceous bands and patches, and vertical plants 13 0
Ferruginous beds 14
Upper Lias Clay.
27 0
- At the western extremity of the line of my horizontal section. See Pl. X
fig. 2.
