EXPLANATION OF THE CLAXHEUGH SECTION. -221 



While this was taking place some earth creep probably 

 took place at the eastern end, the denuded top of the Yellow 

 Sands rising to meet the down-coming limestone. Some 

 peculiar puckerings in the Yellow Sands at a (Section I.) are 

 probably to be accounted for in this way. 



It is perhaps worthy of note that no rounding of the pieces 

 of limestone is observable. 



REFERENCES. 



1. Transactions of the Geological Society of London, 2nd 



Series, Vol. III., 1835, P^-ge 71 and 73, and Plate 7, 

 Fig. I. 



2. Transactions of the Tyneside Naturalists' Field Club, 



Vol. III., 1854-8, Page 237. 



3. Ibid, Vol. I., Plate I., 1848, Page 223. 



4. Natural History Transactions of Northumberland and 



Durham, 1865-7, Vol. I., Page 197. 



5. Geology of Northumberland and Durham, Plate 3, Fig. I. 



6. Ibid, Page 36. 



