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Orford, Suffolk: Further Data on the Quaternary Evolution of the area

Published online by Cambridge University Press:  01 May 2009

A. P. Carr
A. P. Carr
Affiliation:
Unit of Coastal Sedimentation, Beadon Road, Taunton , Somerset
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Summary

Boreholes at, and seaward of, Lantern Marshes shed additional information on the Quaternary evolution of the Orford, Suffolk, area. The logs indicate:

(i) a more complex surface to the London Clay, which is shown to reach depths below those formerly thought;

(ii) the reality of the lower planation surface previously recorded. The surface is, however, cut across Scrobicularia and Butley (Red) Crag to a greater extent than anticipated. It proves that at least part, and probably all, of the −8.5 to −11 m surface is post Ludhamian.

(iii) a peat sample from −9.4 m indicates that relative mean sea level at 7010 B.P. was at approximately −10.7 m. The peat is overlain by shingle and confirms the residual shingle structures as later than that time.

Type
Articles
Information
Geological Magazine , Volume 108 , Issue 4 , July 1971 , pp. 311 - 316
Copyright
Copyright © Cambridge University Press 1971

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References

Carr, A. P. 1967. The London Clay surface in part of Suffolk. Geol. Mag. 104, 574–84.CrossRefGoogle Scholar
Carr, A. P. 1970. The evolution of Orfordness Suffolk, before 1600A.D.: Geomorphological Evidence, Z. Geomorph., N.S. 14, 289–300.Google Scholar
Carr, A. P. & Baker, R. E. 1968. Orford, Suffolk: evidence for the evolution of the area during the Quaternary. Trans. Inst. Br. Geogr. 45, 107–23.CrossRefGoogle Scholar
Macfadyen, W. A. 1938. Post-glacial Foraminifera from the English Fenlands, Geol. Mag. 75, 409–17.CrossRefGoogle Scholar