INTRODUCTION. | 1X 
Easton Cliff, toa loamy micaceous sand, more or less interbedded with seams of laminated 
clay, as on the immediate west of Beccles and on the south of Norwich, but it is easily 
recognisable everywhere. 
These beds 5’ and 5” were first recognised! in the pit behind Chillesford Church (see 
Section XVII), where they occur immediately over the Scrobicularia Crag. Their fauna 
differs but slightly from that of the Fluvio-marine Crag, and as little, except in its greater 
richness, from that of the Scrobicularia Crag beneath them. In the well-known pit at 
Bramerton Common the Chillesford shell bed (~), with true marine facies, and its over- 
lying laminated clay, are exposed, as well as the Fluvio-marine Crag itself, which rests on 
the Chalk (see Section XVI). The bed z@ is there divided from the Fluvio-marine Crag, 
4, by about twelve feet of unfossiliferous sand (not distinguished in the section 
by any symbol), which exactly take the place of the Scrobicularia Crag of the Chillesford 
section. Scrobicularia plana occurs in the Fluvio-marine Crag of Section XVI, though 
rarely ; but in another pit, about a quarter of a mile east of that represented in Section 
XVI, and known to the Norwich collectors as the Scrobicularia pit, a deep section of sand, 
interspersed with shelly beds, is exposed, part of which answers in position to the sands 
thus intervening in Section XVI, between 4 and a, and in this pit the shell is common. 
Comparing thus the section at Bramerton with that at Chillesford, the inference arises 
that the Fluvio-marine Crag in the former is the equivalent of the Marine Red Crag of 
Butley in the latter; and that the sands without symbol, separating the Fluvio-marine 
Crag from the bed 2, are represented by the Scrobicularia Crag of the Chillesford section. 
Or we may even confine our correlation with the Fluvio-marine Crag to the base of the 
Scrobicularia Crag itself. 
We might thus, without much hesitation, arrive at the conclusion that the Fluvio- 
marine Crag of Bramerton was coeval with the newest parts of the Red, were it not for 
one conflicting feature, which we have endeavoured to bring out by making Section X VII 
- partly hypothetical. This section represents what we conceive would be presented by an 
excavation made at right angles to the pit under the Church (Stackyard pit), back to the 
Chillesford beds pit behind the Church. ‘The section afforded by the Stackyard pit is 
truly represented by the extreme right of Section XVII; and there we have the Scrobi- 
cularia Crag overlaid by a few feet ofsand marked ?. This sand is divided from the Scro- 
bicularia Crag by a well-marked line of erosion, which descends in potholes into the latter. 
In this sand no organic remains have been detected, while that under the Chuillesford 
clay, in the pit behind the Church, has yielded a series of fossils in high preservation. 
Holes sunk in the bottom of this pit disclosed the upper beds of the Scrobicularia Crag, 
which are exposed in the Stackyard pit below, but without any signs of such a line of 
erosion as that appearing on the face of the Stackyard pit. It is obvious that if the un- 
fossiliferous sand marked ?, separated by this line of erosion from the Scorbicularia Crag, 
1 By a party of geologists headed by Mr. Prestwich ; see ‘ Quart. Journ. Geo. Soe.,’ vol. v, p. 345. 
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