LAMPLUGH: GLACIAL SECTIONS. 
241 
considerable thickness in the more ancient parts of the town : 7ft. in 
Church Green. 
1 and 2. Fresh- water marls (1) ; sands and gravels — the Gypsey 
Gravel (2). The fine chalky gravel, No. 2 of this section, 
seems to be roughly contemporaneous with, at least, some part 
of the fresh-water marls. 
2 a. Gravel, sand and silt ; older than the fresh-water marls, but 
closely connected with them, and certainly of fresh -water origin. 
2 b. High level gravel, sand and silt ; this I believe to be also of 
fresh-water origin, and equivalent of the Sewerby Gravels of 
Mr. Dakyns, on the north of the town ; and the Hilderthorpe 
Sands, Phillip’s Warp Series , on the south. 
It is with these gravels, 2, 2 a, and 2 b, that I would specially 
deal in this paper. 
3 a. Upper Purple (?) Boulder Clay. 
3b. Intermittent Sand and Gravel. 
3c. Lower Purple Boulder Clay. 
These beds are of the same character as in the former sections. 
4. ( Laminated Clay of Parts I. and IT. absent ). 
5. ‘ Basement ’ Boulder Clay ; only cut into for a short distance in 
the deepest drains towards the Harbour. 
Sections not figured. The following brief extract from my notes 
of the lines of section not included in the figures in plate I. may be of 
use. 
Marton Road , Bridlington. Bough chalky gravel and sand, 26, over- 
Boulder Clay with irregular surface ; Boulder Clay comes to 
top in places. Depth 6ft. 
Nungate , Bridlington. Silty sand at top, then chalky gravel resting 
on a very irregular surface of Boulder clay ; depth about 9ft. 
South Bach Lane , Bridlington. At top, deep soil with broken bones, 
over chalky gravel, over Red Boulder clay ; about 8ft. 
Church Green, Bridlington. Deep black humus with sticks and 
bones (?) over chalky gravel. The humus, a kind of disturbed 
earth, but towards the bottom seems to be stratified ; probably 
an old bog ; 9ft. 
Wellington Road to Promenade , Bridlington Quay. In Wellington 
