Page:Quarterly Journal of the Geological Society of London, vol. 26.djvu/316

208 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Jan. 12, Before concluding the description of the beds of the Upper Series, it may be well to call attention to a singular arrangement of drift which occurs in a brick-pit on Black Hill, Snitterfield, near Warwick (fig. 3).

A somewhat wedge-shaped mass of compact " clunchy" clay of red and greenish colours was observed on the face of the pit to break the continuity of a bed of light-red loam, and to rest,' as far as one was able to judge, upon the laminated clay below. Its dimensions, as measured on the face of the section, were 66 feet from A to B, 30 feet from C to D, vertical depth 19 feet. The total size of the mass is not known, nor was I able to trace its superficial area. It appeared to contain sand mixed up with clay and quartzose pebbles. The locality is on the most elevated ground thereabouts. I could not detect any dislocation of the beds of red loam along the lines A to C and B to D. I may mention here that a fragment of bone, now in the possession of Mr. Kirshaw, F.G.S., of Warwick, was said by the foreman to have been found in the gravel-bed below.

Fig. 3. — Section in Brick-yard at Black Hill, Snitterfield.

a. Surface-soil. b. Light-red loam and sand. c. Carbonaceous seam. d. Finely laminated green and reddish-brown clay. e. Finely laminated light red quartzose sand. f. Quartzose sand and gravel, with Gryphoeoe, Belemnites, Encrinital limestone, &c.

Lower Series.

Gr. Starting from the discovery of a bed of unstratified quartzose flinty drift at Bredon, near Tewkesbury, which was described by Strickland under the head of " Marine Erratic Gravel with Flints " (Trans. Geol. Soc. N. S. vi. p. 554), I have succeeded in tracing the existence of beds of a similar character in various localities, from Berry's Coppice, near Donnington, to within a short distance of Tewkesbury. As will be seen from the general Table of Localities, they occupy elevations from 180 feet to 67 feet above the river Avon. As a general rule, decreasing in altitude seaward, on the south-east side of the Avon, between Evesham and Bredon, they range along the upper edge of an escarpment of Lias which lies at the base of what I have termed the main valley ; at the bottom of