318 Mr. N. Wood on the Geology of Northumberland, S^c. 



the high grounds of Plainmellor, Kingswood, and Coanwood : they here 

 occur in more detached portions, owing to the form of the hills ; but the 

 beds are thicker, and approach more nearly in character to those of the 

 next basin, which I shall now proceed to describe- 

 On the west side of the vale of the South Tyne, a little above Fea- 

 therston Castle, a narrow tract of flat table land occurs, stretching 

 westward at the base oFByers, Halton Lee, and Tindal Fells. The line 

 of Dykes passes through these fells, leaving this plain on the north or 

 dip side of the slip. Crossing the denudation of the vale, we again 

 find the lower beds of the Coal Measures lying against the north side 

 of these fells, and on the dip side of the line of Dykes. The beds 

 of Coal here, are of considerable thickness, and are extensively worked 

 at Hartley Burn and Midgeholme. The depth of the lower beds from 

 the surface, contiguous to the Dykes, is here also much greater than at 

 the other basins ; and the surface of the ground being likewise favour- 

 able, the superficial extent of Coal is greater ; the extent being from east 

 to west above two miles, and the breadth probably one mile. 



The following is a Section of the strata at Midgeholme, the property 

 of the Earl of Carlisle, with the accompanying beds of Coal : — 









Fa 



Ft. In. 



Sandstone, 



... 





... 9 









Fa. 



Ft. In. 





Upper, or Craignook Coal, ... 

 Metal Stone and Plate, 



. 

 . 



4 

 2 



6 

 3 





Lower Craignook Coal, 



. 



4 





 1 



4 9 



Plate or Shale, 



. 



2 



6 



T? .7 



Sandstone, 



. 5 



3 









Grey Metal Stone, 



Sandstone, 



. 1 

 . 3 





 3 





 

 — 10 



2 6 



Coal, Dobson's Three-quarter Coal, 

 Sandstone and Shale, alternating, 

 Coal, Well Syke Seam, 



... 





... 

 ... 12 

 ... 



2 3 

 

 5 3 



Thill 



. 







1* 





Carried forward, 











li 34 



2 9 



