File:The Quarterly journal of the Geological Society of London (12735888683).jpg

F. W. HARMER ON THE KESSINGLAND CLIFF-SECTION.
137
The bed No. 4 is the Middle
Glacial sand with fine shingle
bands, which is generally present
in the district. It rests upon
the nearly horizontal surface of
the beds Nos. 1, 2, and 3, from
end to end of the section, except
in one place near the Pakefield-
Lighthouse gorge, where it cuts
through No. 1 to the beach-line
for the space of a few yards.
For the greater part of the dis-
tance from Kessingland to the
Lighthouse gorge the Middle
Glacial sands No. 4 are overlain
by the chalky Boulder- clay of
East Anglia (or Upper Glacial),
No. 5, which here presents its
usual features.
I am thus altogether at a loss
to discover that sequence of beds
which Mr. Gunn has recently
described. The marine shells
and cetacean bones mentioned, in
the section given by him, as oc-
curring in the Chillesford Clay
have never yet been found in
that bed in the Kessingland cliff ;
and I know of no evidence what-
ever to justify him in the asser-
tion that the Norwich Crag, with
its marine and freshwater shells,
is there represented. No marine
mollusca, so far as I know, have
ever been found there at all.
So far also from proving that
the Forest-bed is older than the
Crag, the evidence of this section
appears to me to point the other
way. It would seem that the
mammaliferous mottled clay, No.
2, was deposited either by a
river or a lake whose northern
bank, at least, was formed by
the Chillesford Clay exposed at
the Lighthouse gorge at the
Pakefield end of the section, that
this mammaliferous clay after-
wards became sufficiently dry to
allow it to be covered with vegcta-
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