112 HONEYMAN NOVA SCOTIAN GEOLOGY. 



carboniferons. It passes through the Permian (?) and triassic 

 formations of Prince Edward Island, a distance of 26 miles, and 

 reaches the Gulf of St. Lawrence, at New London, the position of 

 the bed of the/dendrerpeton) triassic reptile, bathygnathus borealis 

 (Leidy), Permian, theriodont (Owen.) 



AYe have thus traversed the meridian of Halifax, a distance of 

 150 miles, indicating the different geological formations occurring 

 in our course, their relations and characters. 



I regard this as necessary for the right understanding of the 

 observations which I am going to make on the Superficial Geology 

 of a part of the County of Halifax. I consider that my field of 

 observation is admirably situated. In consequence of this the 

 material and deposits to be examined are well exposed by coast, 

 harbour, road and railway sections, and as the geological formations 

 indicated by the line of sections have a distinct and regular sequence, 

 and are interrupted to a great extent by complications which prevail 

 in the east and west of Nova Scotia. We have thus a fair and 

 open field in western Halifax and Hants, Colchester and Cum- 

 berland counties, to the north of it. I shall now examine the 

 coast and shores, commencing at our meridian line of section at 

 Point Pleasant, Halifax harbour. 



At the Point at the entrance to the N. W. Arm, we find on 

 examining the beach that the great proportion of boulders and 

 pebbles., are quartzites, argillites, gneisses and granites, from the 

 first band of the line of section, or that which underlies and surrounds 

 the beach which I am examining. Mixed with these we find boul- 

 ders and pebbles of amygdaloids, with amygdals of zeolites, chiefly 

 heulandite. The source of these cannot be mistaken. They are 

 without hesitation referred to Blomidon. On examining the 

 adjoining bank section we find them falling out of the drift. Here 

 then is the secondary source of these triassic boulders, the primary 

 being at least 58 miles N. W. Equally abundant with the 

 amygdaloids are boulders of syenites, diorites and porphyries. 

 These crystalline rocks, also derived from the drift bank, have their 

 nearest primary source in the central band of the Cobequid 

 Mountains, the shortest distance being 80 miles. This is another 



