468 S, V. WOOD, JUN., ON THE NEWEE 



in it the Till, consisting of unstratified sandy clay full of small 

 worn flints, differing in colour and in the absence of shell frag- 

 ments, but in other respects similar to that at the base of Hasboro' 

 and Bacton Cliff, is unconformably overlain by highly stratified 

 chalky silt, just as it is in that cliff. The intervening hollows 

 filled with sand at Hasboro' and Bacton, however, do not appear 

 here. 



Sections at and near Snape, in fig. I., several miles south of 

 Dunwich, show clay or loam exactly similar to that thus capping 

 Dunwich Cliff, resting unconformably on remnants of the Till larger 

 than the scrap which has now * disappeared from Dunwich Cliff, 

 and which (as it did there) consists of stratified chalky clay. These 

 remnants occur along the edge of the low plateau forming the north 

 side of the Aide valley ; and pits in two of them are touched by the 

 line of fig. I., in one of which, at Aldringham Grreen, this stratified 

 clay was overlain by several feet of red, close-bedded gravel (c). The 

 clay here was very sandy, and its stratification was all arched, as is 

 tihat of the Till about Trimmingham (on the coast in Sheet 68), and 

 it was similarly full of interstratified chalk. Prom the point where 

 the sands hi take the place of the Chillesford beds in Easton cliff, 

 they stretch southwards through the central part of Sheet 49 and 

 corresponding part of Sheet 50 until we encounter this clay again, 

 abutting, along with the uppermost part of the fluvio-marine and 

 marine developments of the B-ed Crag, against the islands of Coral- 

 line-Crag rock presently to be mentioned, and over which the 

 Chillesford sand and clay (but not the marine or fluvio-marine Crag) 

 were spread at the end of Stage 1. Where the Chillesford Clay 

 shows itself on the north of these islands, i, e. at Aldboro', the sands 

 hi rest on and indent it. Thus the heaths of Walberswick, Dun- 

 wich, and Westleton, which in the map to the Introduction to the 

 ' Crag-Mollusca ' Supplement are represented as occupied by the 

 Middle Glacial (c), consist almost entirely of the sand hi ; and as 

 the chief part of these heaths are above the junction-line of the Middle 

 Grlacial gravel (c) with the Chalky Clay, and so formed islands in map 

 No. 2, there is but little of this gravel over them. 



Mr. W. H. Dalton, of the Geological Survey, who has mapped 

 this area, recognizes the distinction of this sandy and often stratifled 

 chalky clay, which I have just referred to the Till from the Great 

 Chalky Clay of Stage III. ; and thus we find the sea-bed of the earlier 

 part of the Stage I am now tracing, which is represented by the 

 sand hi, passing up, both in N'orth Norfolk and in East Suffolk, into 

 the earliest bed in the formation of which the direct intrusion of 

 morainic material has played the predominant part, viz, that distin- 

 guished as 6^; for both in places along the North-Norfolk Chff and 

 inland, as at Guist chalk-pit, the material of the Till is distinctly 

 interstratified in the sand. In the Cromer Cliff at Trimmingham, at 

 E-unton, and at Weybourne, the material of the Till is interstra- 

 tified with the sands, so that the latter, as also in some instances 

 seams of pebbles, lie above as well as below it, and this interstrati- 

 / See footnote, ante, p. 466. 



