434 DE RANGE : BORINGS FOR WATER AND .^ALT IN COUNTY YORK. 
were estimated in 1875 by the late Rev. Clifton Ward, formerly of 
the Geological Survey : — Ft. 
IKeuper Marls, red and blue binds, with sand- 
stone and alabaster beds ... 400 
Bunter, Red Sandstone .. 900 
• I Upper Marls, thickness unknown ... ... — 
•i I Upper Limestone ... ... 40 
I I .Middle :\Iarls 30 
Lower Limestone ... ... ... 200 
At Tadcaster the Lower Permian Limestone was 170 feet in thick- 
ness, and rested directly on the Rough Rock of the Millstone Grit. 
Towthorpe Common, near York, sunk January to April, 1879. 
Bore-hole 9 inch diamater and 311 feet 4 inch in depth, subsequently 
plugged at 210 feet. Water stands 15 feet above tlie river Fors, and 
is not affected by pumping. The surface is GO feet above the sea- 
levei. 1 ne seciioii was cib iuiio\\& . — 
Ft 
In. 
Ton Sand 
4 
6 
rilc v/iclj •• ••• ... ••. 
15 
0 
Boulder Clay 
15 
0 
Loamy Sand ... 
6 
0 
Fine Warp Clay 
9 
0 
Grey Sand ... 
10 
0 
Boulder Clay 
4 
0 
Green Sand 
16 
0 
Green Sand, with layers of blue bind 
18 
0 
Blue bind or Marl 
1 
9 
Light Sandstone, with blue bind ... 
35 
0 
White Sandstone ... 
5 
0 
Blue bind ... ... 
1 
0 
Red Marl 
2 
0 
White Sandstone ... . . 
81 
0 
Blue Marl 
0 
6 
Variegated Sandstone 
23 
0 
Blue Marl ' 
0 
3 
Variegated Sandstone 
60 
0 
Red Marl 
3 
0 
310 
0 
