Near Aldborough the upper division of the Coralline Crag, but with more shells than at Sutton, is alone exposed. It contains casts of Voluta Lamberti, of Cyprina islandica, with specimens of Echini and Crustacea. Of the latter, a beautiful specimen referable, according to Mr. H. Woodward, to the genus Gonoplax, and probably to G. angulata, Leach, was found by my young friend Mr. Norman Evans.
At Iken brick-yard and some adjoining pits the same upper division with Bryozoan remains is found; while in the lower ground, between the brick-pit and the church, and again between the Brick-pit and Webber's-Whin Farm, the upper bed f of the lower division (which is here more developed than at Sutton, and contains some thin seams of hard shelly indurated limestone) crops out. In the numerous pits in the neighbourhood of Sudbourne Church the upper division g is alone exposed; but it is now rarely quarried.
In Sudbourne Park there is a pit on the higher ground which shows a good section of the Bryozoa-beds of the upper division; while a small shallow pit in the low ground close by the Hall has been long noted for the beauty and variety of its fossil shells. Cyprina, Astarte, Cardita, and Terebratula, &c. abound in this pit, which belongs, I think, to part of bed d (see general section, fig. 4).
Fig. 5.—Pit on Broom Hill, near Keeper's Lodge, 1 mile W. from Orford Church. | |
Surface and Drift Soil. | |
e. Yellow Sand full of Fascicularia, Alveolaria and Cellepora; few shells. | |
d. Sandy beds with comminuted shells, thin bands of tabular limestone, layers of large and entire shells and a few Bryozoa. The lower bed is full of fine entire Cyprinæ, Thraciæ, Panopææ, Diplodontæ, Terebratulæ, and Carditæ, often double. |
The well-known pit by the keeper's lodge at Broom Hill, Gedgrave (fig. 5), shows 7 or 8 feet of yellow sands, full of detached Bryozoa, chiefly Fascicularia and Alveolaria, belonging to the zone e; beneath this are 15 feet of comminuted shells, intercalated in which are seams of large shells in a fine state of preservation. In the lower part of this pit, some of the semiindurated seams, when broken open in the plane of bedding, are found studded