76

Quartzite, speckled grey-brown, medium- to fine-grained, schistose,
impure, in beds 6 inches to 4 feet thick separated by 1 inch to 6
inches of quartz-sericite-chlorite schist ......... OOo dion

and chlorite, about 3, inch in diameter in a slightly schistose
CUMS UIOUIG, THATS 355 opducoboseccondoudbossdoosbbunubocdauue

clase and perthite grains up to 4 inch in diameter in a rusty serici-
tic matrix, beds up to 12 feet thick separated by partings of slate
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Slate, dark and medium grey; sheared argillite; a few beds up to 2
feet thick of quartzite, light grey, medium-grained, schistose ....
Quartzite, light grey-brown, slightly schistose, composed of rounded
clastic grains and recrystallized ‘eyes’ of quartz up to ¢ inch in
diameter, and rounded masses of limonitic matter that apparently
represent decomposed ferromagnesian minerals .................
Limestone, dark blue-grey to black, impure, slaty, poorly bedded;
slate, dark brown and grey, calcareous; chlorite-sericite schist,
calcareous; minor quartzite, sheared, in part crossbedded ........

Thickness
Feet

100
80

190
70

210
+180

40

60
+330
390

100
75

160

280

£100
280
+350

110

40

35

130