135 
Sandstones and shales, with coal [Tanhill Seam] to 4 feet in 
thickness. 
Shales with [Fell Top] Limestones. 
Shale. 
Limestone, [Crag Limestone of Alston, Crow Limestone and 
Chert, of Yorkshire. ] 
Sandstone (with two or more coals locally worked), | Firestone, 
Ten Fadom Grit. ] 
Shale. 
Limestone, | Little Limestone, Red Beds Limestone and Chert. ] 
Coarse grits [Coal Sills] with a very constant seam of coal, 
[Tindal Fell Seam] to 4 ft. 6 in. 
Shales, and cherts. 
Yoredale Rocks. (2) Lower Section :— 
Thickness ranging from 500 in the west to 1200 on the east :-— 
Limestone [Main, Twelve Fadom, or Great, Limestone. ] 
Coal, sandstone, shale. 
Limestone Post = Upper Undersett of N.W. Yorkshire. 
Coarse Grit [the Quarry Hazel, of Alston. ] 
Shales. 
Siliceous limestone (i.e. containing organic silica, and not 
sand) Four Fadom [or Lower Undersett Limestone. ] 
Sandstones and shales, thinning westward. 
[Three Yards] Limestone, persistent. 
Sandstones and shales, thinning westward. 
[Five Yards] Limestone, persistent. 
Sandstones and shales, thinning westward. 
[Scar] Limestone [= Middle, or Fourth Sett,] persistent. 
Sandstones, persistent coal, and shales, thinning westward. 
Two thin, but very persistent, limestones [Cockle Shell, and 
Post. } 
Sandstones and shales, thinning westward. 
[Tyne Bottom, Simonstone, or Fifth Sett, Limestone] persistent, 
Sandstones, shales, and some thin limestones, the two former 
thinning westward. 
