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V.—The Upper Keuper Sandstones of East Nottinghamshire2

Published online by Cambridge University Press:  01 May 2009

Bernard Smith
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Extract

The Keuper rocks of East Nottinghamshire occupy almost the whole of that part of the county, striking slightly E. of N. and W. of S., and dipping at a very low angle in an easterly direction.

Type
Original Articles
Information
Geological Magazine , Volume 7 , Issue 7 , July 1910 , pp. 302 - 311
Copyright
Copyright © Cambridge University Press 1910

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Footnotes

2

With the permission of the Director of the Geological Survey.

References

page 303 note 1 “The Geology of the County between Newark and Nottingham”: Mem. Geol. Surv., 1908, pp. 35–54, and in Summaries of Progress for 1907–8.

page 304 note 1 The term originally used by Mr. G. W. Ormerod, because the surface of some the beds had a watery appearance, like watered silk.

page 304 note 2 “The Geology of the County around Lincoln”: Mem. Geol. Surv., 1888, p. 8.

page 306 note 1 Sorby (Quart. Journ. Geol. Soc., 1908, vol. lxiv, p. 197, p1. xivGoogle Scholar) has shown how the sandy ashes of the Langdale slates were deposited sometimes as ripple-drift, which became torn up and contorted as the velocity of the sediment-bearing current increased. Sorby's experiments seem to show that a current of about 2 inches per second in shallow water would suffice to form ripples in sediment as fine as that of these skerries. A velocity of 6 inches per second would wash up and destroy them.

page 306 note 2 Cape of Good Hope, Thirteenth Annual Report of Geol. Commission for 1908, p. 107.Google Scholar

page 308 note 1 The coarser sediment of the higher skerries was probably wind-borne to the face of the waters.

page 308 note 2 I have only seen one slab with casts of sun-cracks from the Keuper Marls of this district.

page 308 note 3 DrSwinnerton, H. H. has recently discovered footprints and fish-remains in the Waterstones of Sherwood, Nottingham (Geol. Mag., 06, 1910, p. 229)Google Scholar.

page 308 note 4 According to Mr. Henry Preston, Grantham.

page 309 note 1 Massive gypsum is recorded from a lower horizon at Clarborough, north of Retford.

page 309 note 2 Rep. Brit. Assoc. for 1907, pp. 506, 507.

page 310 note 1 “Desert Conditions in Britain”: Trans. Geol. Soc. Glasgow, 1898, vol. xi, pt. i, pp. 87, 89, 90Google Scholar.

page 310 note 2 Especially if humid conditions prevailed in the upper parts of the inland basin as in the case of the Dead Sea and the Great Salt Lake.