317 



great number of quartz-feldspar masses and irregular 

 apophyses of quartz diorite. 



Locality 16 — Contact complex of Vancouver meta- 

 andesites and Wark and Colquitz gneisses. Hybridism 

 and primary gneisses. 



Locality 17 — Between 16 and 17 across pre-Glacial 

 lowland largely covered by Maywood clays, few outcrops 

 of Wark and Colquitz gneisses. 



Mt. Tolmie, altitude 383 feet (95 m.), a monadnock of 

 Wark gabbro-diorite gneiss cut by pegmatite and aplite 

 dykes and quartz veins. Grooving and striations. 

 Cordova sands and gravels in lea of monadnock protected 

 from erosion during Vashon glaciation. Section of Vashon 

 drift and Cordova sands and gravels. Sand and gravel 

 bank. General view of pre-Glacial lowland and uplifted 

 Tertiary peneplain — the Vancouver Island upland — , 

 Pacific Coast and Juan de Fuca downfolds, and Coast 

 range and Olympic mountains. 



Locality 18 — From 17 to 18 pre-Glacial lowland largely 

 covered by Maywood clays, few outcrops of Wark and 

 Colquitz gneisses. 



Vashon drift, unconformably overlying Cordova sands 

 and gravels, which overlie Maywood clays, Latter not 

 exposed here. Sand and gravel pits. Sand and gravel 

 used for mortar, concrete filling, etc. 



ANNOTATED GUIDE. 



(Vancouver to Nanaimo.) 

 Excursion C 2, Section II. 



Miles and 

 Kilometres. 



o m. Vancouver — Leaving Vancouver the steamer 



o km. sails westward through the narrow pass called 



the First Narrows, at the entrance of Vancouver 

 harbour, into the Strait of Georgia. To the 

 north are the lower mountains of the Coast 

 range, composed largely of granitic rocks, and 

 to the south is the low area underlain by the 

 relatively unresistent Eocene sediments, con- 

 sisting largely of sandstones and conglomerates, 

 only moderately disturbed, and well exposed in 



