File:The Quarterly journal of the Geological Society of London (12735856943).jpg

LATER TERTIARY GEOLOGY OF EAST ANGLIA.
101
the Waveney and Yare extended, which, having been filled in
with the Upper and Middle Glacial, has not been re-excavated, re-
maining as a low tableland, of which the cliff between Covehithe
and Lowestoft forms the natural section. It is in the centre of
this trough, thus intersected by the cliff, that the well-known
Kessingland deposit lies, occupying at that point a shallow valley
excavated out of the Chillesford Clay and Lower Glacial sands, as
the sections which accompany the separate paper by one of us on
the Kessingland -Cliff section show (see p. 135). We subjoin a small
sketch map to make this description more intelligible.
Fig. 20. — Sketch Map. (Scale 10 miles to the inch.)
Yarmouth.
Hopton and Corton Cliffs.
Lowestoft.
Pakefleld and Kessingland
Cliffs.
Eastou and Covehithe Clifts.
River Bhftn.
Dunwich Cliff.
Upper and Middle Glacial.
Lower Glacial and Chilles-
ford beds.
3fc
fiTTTl 1 1 1 iTi -
The unshaded parts by the rivers are occupied by recent alluvium.
The broken lines on either side of Pakefield and Kessingland cliffs indicate
the supposed continuation of the interglacial valley of the Waveney.
The two lines across rivers are those of sections XV. & XVI.
N.B. At the point marked with a cross a little way S.W. of Lowestoft, and
about 10 furlongs inland from Pakefield Cliff, there occurs on low ground an
excavation in mottled brick-earth resembling the Mammalian bed of Kessing-
land Cliff; but we are not aware whether it be that bed or the Contorted Drift.
If these views are right, there seems reason for suspecting that
this Kessingland bed, containing mammalian remains and rootlets
(which is directly overlain by the Middle Glacial), may belong to
the period of interglacial valley-excavation we have been discussing.
The Lower Glacial beds of Easton and Covehithe cliffs, and those