On the relation of the Westleton Beds, or pebbly sands of Suffolk, to those of Norfolk, and on their extension inland : with some observations on the period of the final elevation and denudation of the Weald and of the Thames Valley, etc. / by Joseph Prestwich.
- Joseph Prestwich
- Date:
- 1890
Licence: Public Domain Mark
Credit: On the relation of the Westleton Beds, or pebbly sands of Suffolk, to those of Norfolk, and on their extension inland : with some observations on the period of the final elevation and denudation of the Weald and of the Thames Valley, etc. / by Joseph Prestwich. Source: Wellcome Collection.
Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.
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![TO OQ ^ o a o KAi WESTLBTON BEDS TO THOSE OE NORFOLK, ETC. ]02 Crag Beds. In the following year Mr. Hariner questioned that view, and contended that the rootlet-bed does not represent the Chillesford Clay, but that it forms part of a freshwater deposit occupying a basin excavated in the Chillesford Clay, and is thus newer than the latter*. In 1880, Mr. J. H. Blake confirmed the opinion that these beds represent the Forest Bed of Happisburgh, and determined the exact position of the Mammalian remains as Fig. o.—Section at the base of the Cliff north o f FaJcefield. feet. a. Chalky Boulder-clay (base of) — b. White sands with patches of gravel and fragments of shells (one Tellina halthica entire), irregularly bedded and oehreous at base 1.5 to 18 c. Laminated black carbonaceous clay, with branches of wood and a few small angular fragments of flint 4 d. Band of freshwater shells (th/io, C^c/n.s, &c.) 4 e. Compact greenish clay with fragments of flint, traversed by rootlets in situ 5 + “sometimes forming a distinct and separate bed, one stage more recent than the Chillesford Clay, and sometimes apparently passing down into the Chillesford Clay and forming as it were the upjiermost portion of the same,” and, “with possibly a few trilling exceptions, all the Mammalian remains are to he found buried beneath the more or less denuded surface of the Eootlet Bed and the Chillesford Clay”t. The only doubt to he felt is whether in this pebbly clay (e) we have the Chillesford Clay modified by its approach to land and the Forest estuary, or whether it belongs altogether to the Forest Series. It appears from the sections of the north end of Easton Bavant cliff and at Covehithe (fig. 2) that the laminated beds c and d overlie a carbonaceous scam e, and these may represent the Forest Bods, while the dark clay (/) appears to pass southwards without • Quart. .Tourn. Geol. Soc. vol. xxxiii. p. ^.^4. t Proo. Norwich Geol. Soc. vol. i. pp. J37-lfi0.](https://iiif.wellcomecollection.org/image/b22446175_0025.jp2/full/800%2C/0/default.jpg)
