86 



PERMIAN GEOUP. 



In the neighbourhood of Manchester, Mr. Binney has 

 described red and variegated marls, containing thin bands 

 of limestone (with scarcely any magnesia) full of magnesian 

 limestone fossils, and somewhat resembling, in their ap- 

 pearance and organic contents, the lowest beds of Bolsover. 

 The following is a synopsis of the subordinate beds. 



Laminated limestones 

 of Knottingley, Don- 

 caster, &c.,with layers 

 of coloured marls. 

 Gypseous, red, bluish' 

 &c., marls. 



Magnesian Limestone 



Lower 

 Red Sandstone. 



Magnesian limestone, 

 yellow, white, of va- 

 rious texture and 

 structure ; some parts 

 full of fragmentary 

 masses. 



Marl Slates; lami- 

 nated, impure, calca- 

 reous rocks, of a soft 

 argillaceous or sandy 

 nature. Phillips. 



Reddish siliceous grit, 

 sometimes grey or 

 yeUow, pebbly — a 

 loose sand ; associated 

 with micaceous sandy 

 shale, or variegated 

 marl, or a grey mica- 

 ceous sandstone, re- 

 sembling those of the 

 coal measures. {Sedg- 

 imck. 



Red and variegated 

 marls of Manchester. 



Calcareous conglo- 

 meratesof Shropshire. 



Dolomitic conglo. 

 merate of Bristol. 



Red sandstone and 

 grits, sometimes ar- 

 gillaceous, frequently 

 calcareous, with deep 

 brown-red shales and 

 marls, occasionally 

 , spotted green, and 

 bands of impure 

 concretionary spotted 

 limestone. 



Shropshire, Worces- 

 tershire, {Murchi- 

 son.) 



