2b 



The sketch map appended to my paper on the Carlisle Basin 

 (Q.J.G.S. 1881) will show that the Kirklinton Sandstone may well 

 be much thicker at Skevvbank than at Lynehovv, apart from the 

 fact that it j^robably suffered less from denudation before the 

 deposition of the Stanwix Marls at the former than at the latter 

 place. For Skevvbank is much nearer the centre of the Basin. 



Probably the best place for a deep artesian well in this district 

 would be the neighbourhood of Harker, between Carlisle and 

 Westlinton. It is true that at Harker the Stanwix Marls would 

 have to be pierced as well as the Kirklinton Sandstone. But as 

 the Stanwix Marls occupy the centre of the Basin, a larger supply 

 of water would be met with beneath them than on either side. 

 Any estimate of the thickness of the Stanwix Marls at Harker can 

 be but a conjecture; but what is seen of them seems to me to point 

 to the view that the hollow in which they lie is but a shallow one, 

 and that the Kirklinton Sandstone is at least as likely to be found 

 at a depth of less than a hundred feet, as at one greater. While 

 below the marls we have, in all probability, simply the two thick 

 sandstones of St. Bees and Kirklinton, the latter resting directly 

 on the former, and their united thicknesses amounting to fifteen 

 hundred feet or more. It would be impossible to mention any 

 part of the British Isles of similar extent in which the geological 

 construction of the district more decidedly favours water supply by 

 means of deep artesian wells than does that of the Carlisle Basin. 

 And it would be almost equally difficult to exaggerate the superi- 

 ority in quality of water so obtained over that now drawn from 

 the beautiful but not unpolluted Eden. 



'* Gretna/ ju jf, macMrd/ n WarwUhj ^■^• 



A.^ark EdyLyrw \ Eden/ \ 



.SectLow across the Gzrlide Basi/v fivnv Gretna tc Wami-ck/ 



