from Penigent to Kirkhy Stephen. 83 



A most characteristic exhibition of this group is seen at Shunner Fell top, 

 and on some other of the highest eminences of Swaledale ; but it does not 

 appear anywhere upon the longitudinal line of section. Like the other 

 groups (Nos. 13. and 15.), it varies in structure; but it contains, and passes 

 into, masses of the most characteristic millstone grit. 



Here terminate the details of the general section ; and with one limited 

 exception, no higher beds appear among the mountain ridges extending from 

 Penigent to Stainmoor, and to the mining districts of Arkendale and Swale- 

 dale. 



Before commencing the description of the longitudinal section, it may be 

 expedient, for the purpose of easy reference, to give a tabular view of the 

 preceding detailed general section. 



Carboniferous limestone series, ^c, in the descending order 



* 



Greatest thickness 

 in Feet. 



17. Upper millstone grit, &c <, 120 



16. Gritstone and shale, with traces of a thin bed of coal 100 



15. Second millstone grit, &c 120 



14. Alternations of hard gritstone, shale, and two or three beds of coal. Mean thick- 

 ness about 60 or 70 feet 200 



13. First millstone grit, &c 60 



12. Great upper shale , 200 



1 1 . Twelve-fathom limestone 80 



10. Gritstone, coal, and shale 80 



c. Bands of grey, micaceous grit, b. Coal and shale, a. Thin-bedded grit. 



9. Four-fathom limestone 40 



8. Sandstone, fissile gritstone, and shale 550 



c. Micaceous, slaty grit, with bands of shale and a trace of coal. b. Shale with 

 bands of gritstone, a. Slaty, micaceous grit and shale, sometimes with a trace 

 of coal. 



7. Mosdale Moor or Wold limestone 45 



6. Fissile gritstone, and carbonaceous shale, with a bed of coal 150 



c. Hard, micaceous, slaty grit. b. Shale, coal, and grit. a. Grit and shale. 



5. Strong post limestone 45 



4. Sandstone, shale, and calcareous grit 150 



c. Hard, brown grit, shale, and a trace of coal. b. Siliceous and calciferous grit. 

 a. Dark shale. 



3. Second limestone or black marble group 45 



2. Sandstone and shale 150 



c. Hard micaceous grit and shale, &c. b. Sandy, micaceous shale and brown sand- 

 stone, a. Dark shale and iron-stone. 

 1. Great Scar limestone 600 



Total 2535 



* PI. VI. fig. 1. 



m2 



