194 
EXPLANATION OF THE PLATES. 
PuLaTE VII. 
Map of the part of Teesdale described in the preceding Paper. The course of the 
river here represented is about 14 miles in length. 
Note. 
It was not originally the intention of the Author to have given any map of 
the district; but he found that some of the preceding descriptions would not be intel- 
ligible without it. Professor Henslow kindly undertook to construct a map on the proper 
scale, and, it is hoped, that the principal phenomena described in the Paper, are laid 
down with sufficient geographical accuracy to answer the purpose intended. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
PuLaTE VIII. 
i. Section transverse to the valley, a little above Middleton. (1.) Beds of the 
general section above the Whin-Sill. (2.) The Whin-Sill. (3.) Beds of the 
general section under the /Vhin-Sill. 
2. Section transverse to the valley near Winch Bridge, shewing the diminished 
effect of the great Teesdale fault. 
3. Section through some of the masses of trap near Greengate Farm, in Lunedale. 
1.) Grit. (2.) Trap of Saddle Bow. (3.) Dislocated beds of limestone and grit. 
(4.) Trap. (5.) Grit-stone. (6.) Trap. (7.) Beds of grit-stone, shale, &c. 
ig. 4. Section exposed on the right bank of the Lune, near Lonton. _(1.) Diluvium. 
(2.) Limestone. (3.) Slate-clay. (4.) Argillaceous limestone. (5.) Slate-clay. 
(6.) Trap, about 11 feet thick. (7.) Hard sandstone (hazle) part of it bent up 
into the trap. (8.) Bed of the river Lune. 
PuaTE IX. 
1. Section exposed on the left bank of the Lune, near Lonton. (1.) Trap about 
11 feet thick. (2.) Hard sandstone. (3.) Shale, with nodules of iron-stone, and 
impure beds of limestone. (4.) Shale, with bands of hard sandstone. 
2. Appearance of the trap on the right bank of the Tees below Winch Bridge. 
The mass of trap is about sixteen feet high, and rests upon thin beds of indurated 
shale and sandstone, 
NE ae 
