A TABLE OF THE 
STRATA OF YORKSHIRE 
IN SUCCESSION, DIPPING EASTWARD. 
Colours of 
Strata. 
Nos. in 
the Geo 
logical 
Table. 
Districts where the 
Strata Occur. 
1^- 
29 
a 
b 
c 
d 
e 
f 30 
g 
h 
Clay or Brickearth. 
Crag, Shells in Sand 
Sand and light Loam. 
Chalk 
Sand of the Portland Rock. 
Oaktree Clay '. 
Coral Rag and PisoUte or Oolite. 
Sand it:ith Rocks of Calcareous Grit and Sandstone, 
(containing a thin Coal and some Limestone) 
rising N.W. to Hambleion Hill and Rose- 
berry Topping 
Clunch Clay and Shale. Alum Shale 
Lias at Topcliff 
Red Marl and Gypsum 
Sand and Sand Rock , 
Knottingley Limestone 
Red Clay and Gypsum 
Yellow or Magnesian Limestone .... 
Pontefract Rock. 
Ackworth Rock . , 
Chevet Rock . 
Red Rock 
The Upper Part of the Coal 
series contains thin beds of 
S'di'ift burning Coal, which 
leaves White Ashes 
I The Midxiay Part thick beds 
I of hard Coal, good for furnaces 
Bradgate Rock 
I The Lovjer Part excellent 
bituminous Coal as at Silk- 
Wortley Rock . . . . v stone, Flockton, etc, accom- 
panied with Cannal Coal and 
j Ironstone / 
Flagstone 
r On the extremity of the Coal- 
-' field, a thin Coal extends 
y N.W. to some of the Moors . . 
o o 
Clay 
Moorstone or Millstone Grit 
Mountain or MetalUferous Limestone 
Blue Rag or Slate Rock 
Whinstone or Basalt. 
Holderness. 
Wolds. 
Vale of Pickering. 
Xth. Riding East Moors 
Cleveland, York Vale 
and the Levels. 
On the North' Road. 
Coal District. 
High Western Moors. 
Craven, and Dales of 
the Mining Districts. 
The colours marked b, d, f, h, k, m, represent Clays, Shales, and beds of Coal, alternating with the Grit Rocks. 
To facilitate the reference to the Coal Measures, letters are added upon the Map. corresponding with tltose 
in the above Table. 
