Vol. 67.] PEKMIAN TO THE TRIAS IN NOTTINGHAMSHIRE. 103 



The boring at Barlow, near Selby, is also an important one. 

 The following section is taken from Mr. Durnford's paper, where 

 full details are given (1907-1908, p. 437) : — 



Thickness in feet. 



Alluvium 94 



Sandstone with occasional marl bands 611 



Red and mottled marls 39 



Gypsum and anhydrite 20 



Red marl with gypsum 26 



Magnesian Limestone 103 



Red marl (with limestone layers) 64 



Rock-salt 20 



Limestone (with layers of anhydrite and marl) ... 317 

 Coal Measures. 



Mr. Durnford thinks that the highest bed of anhydrite is that 

 which occurs at Southcar. Whether the beds above are of Keuper 

 or of Bunter age is a matter of controversy. 



(6) Cumberland and Westmorland. 



Strata belonging to the Upper Permian formation occur in the 

 Eden Valley and at St. Bees Head, and there are also a few small 

 patches south of the Lake District. 



According to Goodchild (1891-92, pp. 22-24), the succession in 

 Cumberland and Westmorland is as follows : — 



Maximum thickness 

 B 3 . Upper New Red. in feet. 



5. Keuper Marls. Red marls with rock-salt, gypsum, 

 subordinate flagstones, and, near the base, thin beds 

 of magnesian limestone ?-f-950 



4. St. Bees and Kirklinton Sandstones. Mainly of a 

 Venetian-red colour, with subordinate strata of red 

 sandy shale or marl. The series may be divided 

 into: — 



(iv) An uppermost band of cellular rock (Water- 

 stones). 



(iii) Zone characterized by tile-red colours (Kirk- 

 linton Sandstone). 



(ii) Venetian-red sandstones, with occasional white 

 bands and a local development of fine 

 conglomerate (Pebble Beds). 



(i) Variegated zones (Lower Mottled) graduating 



into the next subdivision Total 2000 



3. Gypsiferous Marls (Bunter Marls) ; chocolate and Vene- 

 tian-red shales, with subordinate micaceous flags, 

 large segregations of gypsum at various horizons. A 

 band of conglomerate occurs locally at the base, 

 which reposes discordantly upon various members 

 of (2) and (1) 300 



