CORALLINE CRAG. 
33 
to allude to the few small scattered outliers which form the whole 
of the rest of the Coralline Crag, but altogether do not occupy so 
much as a single square mile. 
South-west of Boyton a wide plateau of newer deposits may 
possibly conceal extensive outliers of Coralline Crag, though none 
have yet been met v/ith; there appear to be no wells sunk to a 
sufficient depth to reach them il they exist there. Following 
the edge of the plateau, where the London Clay outcrops, no 
trace of Coralline Crag has been found except at Sutton and 
Ramsholt, close to the River Deben. These two outliers lie close 
together, one on each side of Shottisham Creek, at the point 
where it joins the Deben. They, not improbably, are remains of 
one outlier, which has been cut in half by the Creek in compara¬ 
tively recent times. 
The small outlier at Ramsholt was formerly to be seen in the 
low clitf overlooking the river three-quarters of a mile north¬ 
west of Ramsholt Church, but the section is now hidden by talus 
and overgrown. Mr. Charlesworth states that the Coralline 
Crag was 7 feet thick and Was overlain by 4 feet of Red Crag,* 
but there seems to be no other published account of the section, 
though it has long been celebrated for the beauty of its fossils. 
Sowerby, about the year 1820, figured from this deposit, then 
newly-discovered, shells which had been sent to him by the 
Rev. G. R. Leathes, and a number were also described in Wood’s 
Monograph of the Crag Mollusca. Prof. Prestwich says that 
many species were more abundant at Ramsholt than in any 
other locality, and were generally in a very fine state of pre¬ 
servation—the bivalves often with both valves. Among the 
commoner species were Cardita senilis, Cyprina islandica, Pecten 
maximus, P, opercularis, Panopcea Faujasii, Astarte Burtini, 
A. gracilis, Trochus ziziphinus^ T. conulus, and the large Balanus 
concavus. The latter occurred in hundreds.”t 
The Sutton outlier, on rising ground south of Pettistree Hall, 
is only about a third of a mile across, but having been the 
principal place from which S. V. Wood made his magnificent col¬ 
lection, and being fully described and illustrated by Prof. Prestwich, 
it has become one of the best known localities in the Crag district. 
The pits are not now worked, and though good sections of the 
Coralline Crag and its junction with the Red Crag are still to be 
seen, it will be necessary to refer to Prof. Prestwich’s paper for a 
full account of the deposit. 
The Sutton quarries now open are two—one (F on Prestwich’s 
map and sections) lies about 120 yards west-north-west of the 
Bullock-yard, and is close to the summit of the hill—the other 
(D of Prof. Prestwich) is the Bullock-yard Pit, on the east side 
of the hill, at a somewhat lower level. There was formerly 
another pit towards the south-western end of the outlier; but this 
* Phil. Mag., ser. 3, vol. vii. p. 84. (1835.) 
t Quart. Journ. Geol. Soc., vol. xxvii. p. 118. (1871.) 
E 60798. (3 
