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Some Boulders from the Chalk of Betchworth, Surrey

Published online by Cambridge University Press:  01 May 2009

I. S. Double
I. S. Double
Affiliation:
Department of Geology, The University, Liverpool.
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Extract

The presence of small quantities of detrital (terrigenous) minerals in the Chalk has been recorded from such widely-separated areas as Northern France (1), the Isle of Wight (2), Antrim (3), Mull (4), and East Anglia (5), but the discoveries of boulders in that formation appear to be restricted to the south-east of England. These records may be due to the greater extent of the workings in the Chalk of that area, and hence the greater frequency with which these “foreigners” are uncovered, or to some definite geographical conditions prevailing in Cretaceous times. The information available seems to prove that Betchworth has yielded more boulders than all other areas added together. In 1897, W. P. B. Stebbing (6) described two granitic rocks from that area. The present paper deals with a small collection of nineteen boulders made by the late Gerard Weedon Butler, also from Betchworth. Since these notes were first drafted the writer has been informed that a collection of something like 70 boulders, mainly from Betchworth, has been added since 1912 to those that were already in the Museum of Practical Geology.

Type
Original Articles
Information
Geological Magazine , Volume 68 , Issue 2 , February 1931 , pp. 65 - 71
Copyright
Copyright © Cambridge University Press 1931

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References

REFERENCES

(1) Cayeux, L. (1897). “Contribution à l'étude micrographique des terrains sédimentaires,” Mem. Soc. Géol. Nord, iv, 1.Google Scholar
(2) Hume, W. F. (1893). Chemical and Micro-mineralogical Researches on the Upper Cretaceous Zones of the South of England, London.Google Scholar
(3) Hume, W. F. (1897). “The Cretaceous Strata of County Antrim,” Quart. Journ. Geol. Soc., liii, 540.CrossRefGoogle Scholar
(4) Bailey, E. B. (1924). “The Desert Shores of the Chalk Sea,” Geol. Mag., LXI, 102.CrossRefGoogle Scholar
(5) Double, I. S. (1927). “The Microscopic Characters of Certain Horizons of the British Chalk,” Journ. Roy. Micros. Soc., xlvii, 226.CrossRefGoogle Scholar
(6) Stebbing, W. P. D. (1897). “On two Boulders of Granite from the Middle Chalk of Betchworth, Surrey,” Quart. Journ. Geol. Soc., liii, 213.CrossRefGoogle Scholar
(7) Mantell, G. (1827). The Geology of the South-east of England, London, p. 78.Google Scholar
(8) Dixon, F (1850). The Geology of Sussex, London, p. 69.Google Scholar
(9) Godwin-Austen, R. A. C. (1857). “On a Boulder of Granite found in the White Chalk near Croydon,” Quart. Journ. Geol. Soc., xiv, 253.Google Scholar
(10) Godwin-Austen, R. A. C. (1860). “On the Occurrence of a Mass of Coal in the Chalk of Kent,” Quart. Journ. Geol. Soc., xvi, 326.CrossRefGoogle Scholar
(11) Jukes-Browne, A. J. and Hill, W. (1887). “On the Lower Part of the Upper Cretaceous Zones in West Suffolk and Norfolk,” Quart. Journ. Geol. Soc., xliii, 554.Google Scholar