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Petrology of a Wealden Sandstone at Clock House, Capel, Surrey

Published online by Cambridge University Press:  01 May 2009

P. Allen
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Extract

The topmost band of sandstone in the Weald Clay at Capel (6) is now exposed for 100 yards, and varies in thickness from 8 inches at the southern end of the face to 1 foot at the northern end. The stone is glauconitic and highly micaceous, and carries so much fresh biotite on certain bedding-planes that they are heavily darkened. Flakes of biotite and muscovite commonly reach 2 mm. in diameter, and occasionally 3 mm. No petrological facies like it is known in the older Hastings Beds outcropping to the south and south-east. The petrography of the sandstone therefore merits description, and some discussion of the problems which it raises.

Type
Articles
Information
Geological Magazine , Volume 85 , Issue 4 , August 1948 , pp. 235 - 241
Copyright
Copyright © Cambridge University Press 1948

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References

REFERENCES

(1) Allen, P., 1945. Sedimentary Variation: Some New Facts and Theories. Journ. Sed. Pet., xv, 75.Google Scholar
(2) Allen, P. 1947. Correlation between Allogenic Grade Size and Allogenic Frequency in Sediments. Journ. Sed. Pet., xvii, 3.CrossRefGoogle Scholar
(3) Allen, P. 1947. Whitsun Field Meeting to the Central Weald. Proc. Ceol. Assoc., lviii, 76.Google Scholar
(4) Allen, P. 1948. Wealden Petrology. The Top Ashdown Pebble Bed and the Top Ashdown Sandstone. Quart. Journ. Geol. Soc., civ.Google Scholar
(5) Hayward, H. A., in Groves, A. W., 1931. The Unroofing of the Dartmoor Granite and the Distribution of its Detritus in the Sediments of Southern England. Quart. Journ. Geol. Soc., lxxxvii, 70, 96.Google Scholar
(6) Kirkaldy, J. F., and Bull, A. J., 1948. Note on the Section of Weald Clay Exposed at the Clock House Brickworks, Capel, Surrey. (Weald Research Committee.) Proc. Geol. Assoc.CrossRefGoogle Scholar