DERWENTHAUGH tAND IN DERWENT GUT. 421 



DERWENTHAUGH LAND U DERWENT GUT. 



OPENING ADDRESS OF TYNESIDE NATURALISTS' 



FIELD CLUB WINTER SESSION, 



22ND OCTOBER, 1901. 



By Rev. Arthur Watts, L.Th., F.G.S., F.R.G.S., 

 Rector of Witton Gilbert. 



The twelve borings on Derwenthaugh in the Gut of the 

 Tyne-Derwent were begun, on behalf of the Consett Iron 

 Company, by Mr. F. Coulson, on the 25th August, 1900, and 

 were completed on the 2nd April of the present year. The 

 particulars of this work are in my hands by the kindness of 

 Mr. Wm. Logan, of Stobbilee, Langley Park. 



The borings are in three groups, 300 feet apart, each hole 

 in each group being 220 feet from its neighbour. The area 

 therefore made known is 44,000 square yards. Each group is 

 at right angles to the present bed of the Tyne, and may be 

 conveniently referred to as the Western, Middle, and Eastern 

 groups. 



The Western Group consists of the holes numbered on 

 the plan, accompanying this paper, i, 2, 3, and 4. They are 

 respectively i6o-ft., i6i-ft. i-in., ii6-ft. 9-in., and 119-ft. 

 deep ; and pass through alluvium respectively in 149-ft. 6-in., 

 124-ft. 8-in., 115-ft. 3-in., and ii6-ft. 



The Middle Group consists of the holes numbered 5, 6, 7, 

 and 8, and were to the several depths of 138-ft. 6-in., 135-ft., 

 132-ft. 6-in., and 122-ft. 6-in., passing through the alluvium in 

 136-ft., 132-ft. lo-in., 129-ft., and ii8-ft. 6-in. 



The Eastern Group consists of those numbered 9, 10, 11, 

 and 12, and were 121-ft., 112-ft. lo-in., 129-ft., and 117-ft. 2-in,, 

 reaching rock at ii8-ft. 6-in., 112-ft., 126ft., and 114-ft. i-in. 

 respectively. For fuller detail see appendix. 



These reveal a trough passing in a meandering way 

 through numbers i, 5, and 11 at depths 149-ft. 6-in., 136-ft., 



