DALY: GEOLOGY OF THE NORTHEAST COAST OF LABRADOR. 233 



mined at forty-four hundred feet in height. This peak is, so far as 

 known, the highest yet measured in Labrador. The other peak was not 

 climbed, but was estimated by these gentlemen to be fifty-three hundred 

 feet in height. Still higher summits dominate these on both sides of 

 Nachvak Bay. From Mt. Ford the writer saw two extremely sharp horns, 

 bearing N. 25° W. These must have been at least forty miles distant, 

 and in all probability are members of the group of the " Four Peaks" 

 mapped on the Admiralty chart as southwest of Eclipse Harbor. Judg- 

 ing from their conspicuous position in the sea of mountains, each of 

 them must be at least seven thousand five hundred feet high. South 

 of Nachvak Bay there are several fine peaks more than six thousand feet 

 in altitude. 



The Geology. — Bell has already given us some notes on the nature 

 of the rocks in the bay. Additional observations made last summer 

 could evidently not form a very complete or systematic piece of work. 

 The Torngats, where examined along the long cross-section of the 

 bay, are seen to be essentially composed of contorted but generally 

 highly inclined crystalline schists, chiefly gneisses. The average strike 

 is N. 25° W. At Skynner's Cove (Plate 12) ledges of common gray 

 biotite gneiss and dark-colored hornblende gneiss striking N. 5° W. are 

 covered with many large boulders of an arkose-like rock enclosing 

 roundish, often large, grains of opalescent quartz. This rock was not 

 seen in place ; it may be related to a well-stratified, light colored I'ock 

 series that occurs on the opposite side of the bay. The latter series is 

 about five hundred feet in thickness, is manifestly sedimentary and lies 

 unconformably upon the gneisses. Unfortunately there was no opportun- 

 ity to make a landing and investigate the region closely. It may be that 

 the cover represents a continuation of the stratified rocks seen southwest 

 and west of Gulch Cape. The rocks of the Nachvak cliffs were sampled 

 by Bell, who reported to have found there a slaty breccia apparently 

 similar to the arkose of Skynner's Cove, and, as well, a " fine-grained 

 silicious schist." 1 



Nine miles west of Skynner's Cove, on the north side of the bay, the 

 well-banded gneisses still strike N. 5° W. ; they are here cut by a re- 

 markable network of dikes exposed on a sheer fifteen hundred-foot cliff. 

 The parallelism of the dikes gave them at first sight the look of sills, 

 but closer examination showed that they are independent of the schis- 

 tosity of the gneisses. 



Near the Hudson's Bay Post, the rocks are chiefly coarse, friable 

 1 Rep. Geol. Surv. Canada, 1882-3-4, Pt. DD, pp. 15, 16. 



