112 



Upper 

 Gaixeby. 



"Wall-case 45. 



CLAY SLATES AND GNEISSIC ROCKS, ETC. 



^ 89— Banded micaceous argillaceous shale, Devo- 

 nian. Altered slate near Granite. Penvivian Hill » P „I 



Bodmin 



Map 30. 



90.— Argillaceous slate, with mica and talc, Devo- 



nian. A 



forming the lower part of the calcareo-trappean series at 



Bossinev. Cornwall. Map 30. 



Clay slate, white killas, talcose, Devonian 



Sheet 30. 



Very 



91. 



Watergate Bay, St. Colomb Min 

 talcose. 



92. 

 Mine, St. Agnes, Cornwall. Map 3 1 . Very talcose. 



93 — Fine grained argillo-calcareous slate, 



mica, Devonian, Trebarwich Strand, near Tintagel, ' CorZ 

 wall. Map 30. 



Clay slate, white killas, Devonian, Huel Friendly 



with 



94. 



Arenaceous schist, toith much 



mica, Devonian. 



Banded and slightly gneissic in structure. Breague, Corn- 

 wall Map 33. From junction of slate with granite. 



95.— Clay slate, killas, micaceous, with banded gritty 

 lines, Wheal Vor Tin Mine, Devonian, 



Map 



, near Breague. 

 One mile east of a boss of granite, and partly 



of staurolite, and very small crystals of schor 



rfect 



96. 



Red 



f granite 



Map 



D 



97— Micaceous gneissic rock, Bolt Head, Salcombe, 



evonshire. Map 24. Metamorphic rocli, composed of 

 ime contorted " "* " " 



nated layers. 



foliated 



98. 



Head. 



f< 



talc, a fid 



Map 32. Fine interlaminated layers of 

 " Ispathic matter. 



99 — Altered sandy rock, contorted and banded, some 

 of the bands somewhat felspathic, St. Agnes Beacon. 

 Map 31. Near a boss of granite. 



100. — Schorlaceous contorted rock, metamorphic, 

 and banded like gneiss in interlaminations of quartz and 



U 



i 



i 



iff 2- 



lit 



ih 



H . 





«to 



8 



»!(?< 



! ! 



