9 8 



scenery in the vicinity has made it an objective point for 

 the tourist. 



On entering Killarney bay from the south-west, the 

 white peaks of quartzite rising to an elevation of nearly 

 1,000 feet (304 m.) above the lake form an impressive 

 scene, which is enhanced by the scattered patches of dark 

 green evergreens. The quartzite ranges are separated 

 from the Laurentian gneisses to the east by a belt of 

 granite, which forms the greater part of George island, 

 between which and the mainland lies the Killarney passage. 

 This channel is a straight east and west depression in the 

 granite, of sufficient depth to allow the passage of large 

 vessels. On Badgeley point, to the westward, a similar 

 depression is cut almost to the water level. Here several 

 dykes of greenstone run parallel to the depression, and a 

 dyke of like material occurs in the granite south of the 

 Killarney passage. It is probable that these depressions 

 are in some way connected with the occcurrence of green- 

 stone dykes [33]. 



THE PRE-CAMBRIAN OF PARRY ISLAND AND 

 VICINITY. 



BY 



T. L. Walker. 



Along the eastern shore of Georgian bay, from Kil- 

 larney to the mouth of the Severn river, the rock formations 

 are almost entirely made up of crystalline schists with 

 numerous intrusions of acid and basic rocks. Some of 

 the schists are derived from the alteration of igneous 

 rocks, while others represent metamorphosed sediments. 



In the vicinity of Parry Sound the general strike of 

 the schists is north-easterly with a dip toward the south- 

 east. Along the channel between Parry island and the 

 mainland, the rocks are well exposed and exhibit outcrops 

 of crystalline limestone, hornblende and biotite gneisses, 

 and hornblende schist, while the intrusives are represented 

 by anorthosite, gabbro, and granite. These igneous types 

 have been subjected to such great pressure as to present 



