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



feet. This bed of Coal may be traced eastward to Haltwhistle, Hay- 

 don Bridge, and Fourstones ; at which latter place it is worked by the 

 Greenwich Hospital. To the east of this, for some distance, the strata 

 are much dislocated by Slip Dykes ; but the same bed of Coal is again 

 worked on the east side of the North Tyne at Acomb, Wall Fell, and 

 Fallowfield. 



The following is a Section at the latter place, from a bed of Lime- 

 stone called the Little Limestone. 



Little Limestone, 



Plate, 



Coal, good, 



band, 



inferior, ... 



Plate and grey Beds, 



Hazel and grey Beds, 



Plate 



Great Limestone, 





Fa. Ft. In. 



>•• 



4 



2 7 



• •• 



1 



5 



Ft. In. 







3 







9 







1 8 













5 5 



... 



1 



1 



... 



14 



5 7 



... 



14 



5 8 



... 



10 









48 



1 .3 



The strata here dip south-west, and we find only one bed of Limestone 

 above the Little Limestone. Tracing the strata to the dip, we reach 

 the mass of Sandstones equivalent to the Millstone Grit, bassetting out 

 on the north face of the hills above Hexham, and overlying the prece- 

 ding Limestones ; and still further beyond this, to the south-west, we 

 reach the regular Coal Measures at Stublick, underlaid by the Sand- 

 stone beds abovenamed, as shewn in Section No. 3, Plate XXVIL 



For a considerable distance east of Wall Fell we do not find any 

 Coal beds of consequence worked. The first which occurs correspond- 

 ing with that of Wall Fell is worked at Ingoe and Kirkheaton. The 

 seam of Coal is here about four feet thick, and above it lie two beds of 

 Limestone, separated by nine feet of black Metal ; and below the Coal 

 lies a thick bed of Limestone, which is quarried at Kirkheaton. It is 

 necessary here to remark, that although these Limestones and Coal 



