82 
SLATE DEPOSITS AND INDUSTRY OF UNITED STATES. 
tream empties into the Lehigh from the west at Slatington. The accompanying 
map (PI. XVI), includes all the quarries about Slatington which were in operation in 
1902, 45 in number, together with 50 abandoned ones. The older quarries have 
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Fig. 6. — Sketch of anticline 
in Provident Slate Company's quarry, near Slatington, Pa. Looking 
west. Width represented, 50 feet. 
reached a depth of about 300 feet. The map shows the exact location of these quar- 
ries, their approximate dimensions at the surface, the strike of the beds, and both 
the direction and angle of the pitch of the folds. The lateral deflection of the strike 
amounts in places to 10°, if not a little over, and the pitch ranges from 5° to 10°. 
Fig. 
-Sketch of anticline in old quarry north of Slatington, Pa. 
sen ted, 25 feet. 
Looking west. Height reprc 
The character of the folds in these quarries is shown in Pis. XVII, XVIII, am 
figs. 6, 7, 8, 9. The relation of the workable beds to the ribbons is shown in PI 
XIX. The strike ranges from N. 40° E. to N. 90° E., and N. 86° W. The cleavag 
strike varies from N. 74° to 85° E., and its dip fromS. 5° to 16° E., at angles rangin 
