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Excursion to NE Norfolk's North Sea coast - March 2004

- Annotated pictures

Second Stop: Sidestrand (just SE of Cromer)

En échelon stacked nappes or schollen of huge blocks of chalk derived from what now is the North Sea floor, were deposited along the Anglian ice margin of the (Elsterian) Scandinavian ice-sheet.

Note the banding of flints within the chalk, and presence of flints on the beach. Cliff erosion provides a continuous supply of flints to the modern beach. These flints occur frequently in the glacial sediments, and were originally derived from within the chalk, as illustrated by the flint-bandings.

As above, with people for scale

A second block of chalk, directly left (=south) of block on photos above.

Note that the contact between the chalk and overlying Early Pleistocene (Pastonian) sediments is undisturbed. This indicates that both were transported by the ice-sheet as-one and illustrates the deep-frozen state of the displaced blocks of pre-Anglian deposits during detachment, transport and deposition. At the same time it indicates these blocks cannot have been transported over a large distance.

Cambridge staff and students
decide to keep a respectable distance from the impressive cliff face.

Group still impressed.

Nevertheless, to the next stop!

TO INDEX PAGE         TO STOP 1           TO STOP 3

(c) 2004 photos and annotations by C. Rolfe, S. Boreham, M.A. Godoi, K.M. Cohen, P.L. Gibbard.
Quaternary Palaeoenvironments Group, Department of Geography, University of Cambridge

You are welcome to use the pictures for non-commercial purposes!