xi, STONESFIELD BEDS. 149 



rSoft marly bed 5 o 



Hard stone I 6 



Soft marly bed .........50 



Hard stone . 20 



Soft marly bed 5 o 



Solid stone 3 o 



l-Soft marly bed .50 



c Laminated beds 26 



b Rag oolite .120 



a Slaty rag . . 5 



Some of the beds here described as marly may very probably 

 appear more argillaceous in the pits at Stonesfield, and indeed they 

 are so at another part of this cutting. 



The letters a, b, c, d, added to these sections, shew the general 

 conformity of all, the rag and slate series lying apparently in the 

 most continuous strata. 



Proceeding northward to the drainage of the Glyme, we find 

 about Sandford, in place of the ' Stonesfield slate/ beds of white and 

 yellow sand, sixteen or more feet in thickness, with irregular laminae 

 of calcareous sandstone, more or less blue in the centre, called 

 ' plank."* This is sometimes covered by six feet of clay, which is 

 employed for making bricks. Clay appears below, which is re- 

 garded as of the upper lias. 



At Worton, between Steeple-Aston and Banbury, the lowest 

 beds of the oolite series were found to consist of 



Small shells and sand, resting on limited patches of calcareous flag- 

 stone ('plank'), or when these were absent, on iron ore . .40 



Above Rowsham, the lias is covered by thirteen feet of brown 

 ferruginous sands, and sandstone with calcareous and irony layers ; 

 marly clay lies above, and then oolite of the rag character ; followed 

 by white oolite, crowning the hill at Hopcroffs Holt. These sands 

 become more ferruginous and stony at Steeple-Aston, and have 

 there been quarried to the extent of eight feet in thickness, but 

 without success, for iron ore. They rest upon upper lias, as that 

 does upon ferruginous marlstone. 



On reviewing these sections we find no reason to doubt that the 

 Stonesfield beds are justly co-ordinated on the one hand with the 

 thin-bedded rocks at the base of the Great oolite of Gloucestershire, 



Phillips in Geol. Soc. Journal, 1859. 



