315 



late mature dissection of uplifted Tertiary peneplain, 

 transitional in character to the Vancouver Island upland. 



Locality 1 — Quarry in Sutton limestone. Limestone 

 used for flux by Tyee Copper Company's smelter at 

 Ladysmith. Dyke of sheared basalt prophyrite of 

 Vancouver volcanics. 



Locality 2 — Sutton limestone lens in contact with 

 Saanich granodiorite. Apophyses of granodiorite and 

 irregular dykes of basalt porphyrite. In places limestone 

 contact metamorphosed, silicified, and converted into 

 garnet-diopside-epidote rock, with small body of magnetite 

 and chalcopyrite. Limestone quarried for manufacture 

 of lime. 



To the southwest, Sutton limestone quarried for the 

 manufacture of lime. Lime hydrated and used in the 

 manufacture of sand-lime brick. Sand from Colwood 

 sands and gravels. 



Locality 3 — From 2 across Colwood delta. 



Section of Colwood delta showing top-set and fore-set 

 beds. Hydraulicking of deposit for sand and gravels, used 

 for concrete, filling, etc. 



Locality 4 — From 3 across Colwood delta and Albert 

 head. Headland of Metchosin volcanics. 



Metchosin basalts. Tuffs and agglomerates, some with 

 water worn fragments, "concretions", and "bombs". 

 Vesicular and amygdaloidal basalts. Diabase dykes and 

 pipes. Denuded volcano (?). Columnar jointing. Fossili- 

 ferous tuffs (upper Eocene gastropods). Secondary 

 minerals, calcite, quartz, and zeolites. Glacial grooves, 

 striations, and roches moutonnees. 



Locality 5 — Metchosin basalts, columnar jointing and 

 pillow structure. 



Locality 6 — From 5 back on to Colwood delta. 



Kettle or ice block holes near inner border of delta. 

 Large ledges of Metchosin basalts to west. 



Locality 7 — Unfoliated shatter breccia of Wark and 

 Colquitz gneisses. Hybridism and development of horn- 

 blendite. 



Locality 8 — Banded Colquitz quartz diorite gneiss, 

 primary gneiss. Small pegmatite dykes, small faults and 

 contortions. 



Locality 9 — From 8 over pre-Glacial lowland. 

 Numerous ledges of Wark gneiss and small monadnock, 

 Knockan hill to north, altitude 260 ft. (79 m.), and drowned 

 glaciated valley, Portage inlet to south. 



