348 HONEYMAN ON NOVA SCOTIAN GEOLOGY. 



Tbe green calcite of our section indicates conditions which 

 seem to correlate the rocks of our section with the *' Lower" rocks 

 of Arisaisf. The intimate connection existins^ between this band 

 and the next in order on the line of Railway, points in the same 

 direction. I have already experienced considerable difficulty in 

 correlating the corresponding rocks in Arisaig. There was no 

 difficulty in showing that they were older than the " Upper Arisaig 

 Series," i. e. that they are older than the Middle and Upper Silu- 

 rian jjcriods. The difficulty was in ascertaining — how much older 

 they were. I considered that I had established their lithological 

 resemblance to the metaraorphic rocks of the Quebec period of the 

 Canadian Survey. Assuming that the Lower Silurian age of the 

 Quebec rocks had been established, I had considered that there was 

 little doubt that the marble and associated rocks of Arisalo; were 

 also Lower Silurian. — Vide Trans, of Institute 1872—3. I find 

 however, that the age of the Quebec rocks is still a questio vexata, 

 and It is maintained that they are older than the achno^oledged 

 Lov,'f3r Silurian. 



]*roceeding farther along the line of Railway we have another 

 great band, having a width of 24,000 feet, or about 4J miles. Of 

 this 11,500 feet is in the County of Colchester and 12,900 feet in 

 the County of Cumberland. 



The sections of rocks of this band on the I. C. R., are com- 

 paratively few and low. The rocks are almost or altogether 

 obsC/Ured by the great gravel and sand-banks. The rocks that are 

 seen in the sections or openings of stream-tunnels are granitoid — 

 grey and red syenites and diorites. There are also crypto-crystalline 

 dioiltes and porphyries. The crypto-crystalline diorites are not 

 distinguishable from those of the preceding band. The transition 



Note. — Since I read my paper to the Institute, I have had an opportunity of 

 examining the geological formations of New Brunswick. The resemblance exist- 

 ing between the great Limestone-bearing formation of St. John and the Marble- 

 bcai ing formation of Nova Scotia and Cape Breton is so striking, that I have very 

 little hesitation in regarding them as identical. The resemblance between the 

 formation of St. John and that of Arisaig is even more striking than between 

 Arisaig and Cape Breton. Profs. Hart and Bayley, and Mr. Matthews have 

 proved satisfactorily that the New Brunswick formation is older than the Lower 

 Silurian. 



