202 
DEPOSITS OF DOUBTFUL AGE. 
Fig. 47. 
Section in the Cliffy about 250 yards N.N.E. of the Coast Guard 
Flagstaff, at the Northern End of Southwold. 1878, 1879. 
(W, Whitaker.) 
S.W. 
a. Sandy stony soil, about a foot. 
f b\ Boulder Olay, weathered at top and with pipey masses 
of sand, rather dark, over 3 feet passing on the 
right into: — 
h. Pale grey Boulder Olay up to 4 feet (or more ?). 
c. Light.coloured and brown sand, mostly coarse, some¬ 
times a coarse grit, with gravelly layers; over 
3 feet; passing into the next. ? = the Middle 
Glacial DriftGlacial sand of Wood. 
d. Sandy pale Boulder Olay (in the central part of the 
pit) : on the left rather a loam and sand, with 
scattered stones; about 8 feet. 
e. Gravel, chiefly of pebbles of flint, but many of chalk; 
some broken shells; nearly a foot. Differs from 
the pebbly gravel of the district in containing 
chalk. 
/. Crag? Coarse ferruginous sand with broken shells, and so full of 
flint-pebbles as to be almost a gravel. Dug to a depth of 6 feet. 
Of course it is possible that this may be a shelly condition of the 
pebbly gravel; but the undoubted Orag hereabouts often contains 
gravel. 
S, V. Wood considered bed f of this section to belong to the 
Pebbly Series, but remarked that I call attention to it because I 
believe that all the shells in it are derivatives from the Orag 
. . The deposit has yielded 23 species of mollusca, all 
common Norwich Crag forms. 
The Pebbly Gravels occupy the whole of the Southwold island, 
except a small area near the section just described. They 
reach a thickness of 37 feet in the well at Waterworks. One 
other fossiliferous section occurs in the railway cutting at 
Southwold Station, where about 20 species of mollusca have 
been obtained—all common Norwich Crag forms. In the 2nd 
Supplement to the Crag Mollusca, S. V. Wood refers the shells to 
the ‘Lower Glacial’ (= Bure Yalley Beds = Westleton Beds), 
but in the 3rd Supplement he corrects this, considering that all 
the species are derived from the underlying Crag. His later 
opinion seems more likely to be correct. 
On the northern side of Buss Creek (the channel that separates 
Southwold from the mainland on the north-west) there were two 
* Third Supp. to the Crag Mollusca —Palceontographical Soc., pp. 23, 24. 
