AND ASSOCIATED PERMIAN EOCKS OF DUEHAM. 217 



No. 26. Locality— QUARRY S.E. OF PENSHER HILL. 



Lithological Characters. — Yellow, ribboned with grey and 

 speckled with brown, compact, hard, breaking with sharp cutting 

 edges, thin-bedded ; unfossiliferous. 



ANALYSIS. 



Carbonate of lime 91-86 



magnesia 3-21 



Oxide of iron and alumina 1-33 



Sand 160 



Water 0-85 



98-85 



Iron chiefly as peroxide. Trace of manganese. 



A limestone similar to this is widely distributed along the 

 western escarpment of the formation (when it occasionally occurs 

 of considerable thickness) from Down Hill to Sherburn, where it 

 is extensively quarried and used for road-making, lime-burning, 

 and for building — though it is only an inferior stone for the latter 

 purpose. It is usually unfossiliferous, but at Sherburn, Low 

 Moorsley, and Pallion a few fossils occur on the weathered sur- 

 faces of the beds. 



No. 27. Locality— HERRINGTON HILL. 



(FRIABLE VARIETY.) 



Lithological Characters. — Light yellow, friable with harder 

 sub-oolitic portions, containing small druses ; unfossiliferous. 



ANALYSIS. 



Carbonate of lime 68-60 



magnesia 32 - 00 



Oxide of iron and alumina 0-46 



Sand 0-13 



10119 

 No. 28. Locality— HERRINGTON HILL. 



(CRYSTALLINE VARIETY.) 



Lithological Characters. — Yellowish grey, weathering cold grev, 



