8 D GEOLOGICAL SURVEY OF CANADA. 



others whose age is not so certainly known are found; one of these, al- 

 ready mentioned as occurring about Tenant's Cove, has been described. 

 Stratigraphically, it is apparently superimposed upon the pre-Cambrian 

 belt, which extends along the north side of Belle-isle Bay, and it is again 

 seen in the eastern part of the Scotch settlement, occupying a basin in 

 the old pre-Cambrian rocks of that vicinity. The slates and shales are 

 dark, and often ochreous, but no fossils have yet been discovered. 

 Further north in Wickham, about one mile south of Golding's Landing, 

 black slates, which have been supposed to belong to this age, are seen. 

 They apparently, in so far as examined, contain no fossils, but occur 

 on the southern side of the pre-Cambrian ridge which extends eastward 

 along the county line. 



Black slates, which apparently underlie the Upper Silurian of Oak 

 Bay, in Charlotte county, are also found near the head of the bay, on 

 the road from St. Stephen to St. Andrews, but, as in the rest of these 

 undetermined cases, they have all been included in the general colour 

 which represents the Cambro-Silurian. 



III. Cambro-Silurian. 



Dark argiiiites. The rocks included under this head comprise the dark argillite 

 group which is largely developed in western and northern Charlotte 

 county, as well as in southern Queens, west of the Biver St. John ; also 

 a large body of what was in 1870-71 described under the head of Lau- 

 rentian, and which was then considered an upper series or the equiva- 

 lent of the Montalban group of Dr. Hunt, and which occupies the 

 south-western area of Charlotte, in the parishes of St. Stephen and St. 

 David. The greater part of the latter group is highly metamorphic, 

 and consists of gneiss, quartzite, mica schist, hornblende, and actinolite 

 schist, with some argillite. It presents, in many respects, a strong- 

 resemblance to the pre-Cambrian of other portions of the province. 

 This group is overlaid, near Oak Bay, by black slates, which have 

 been compared to the St. John group, and which, in turn, underlie 

 the fossiliferous Silurian about the head of the bay. The slaty or 

 dark argillite portion occupies principally the northern part of the 

 area and eastward, crossing into Queens county, where it may be 

 traced to the St. John Biver, at Hampstead, and across through the 



No fossils. parish of Wickham. Fossils have not been found in this group, and 

 great uncertainty exists as to its exact horizon, some portions resem- 

 bling closely the Silurian, and even seeming to shade otf into the 

 overlying supposed Devonian on its northern flank. As a group, 

 however, it may be said to be intermediate between the pre-Cambrian 

 and the fossiliferous Silurian. 



