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granite intrusion was later than the formation of the veins. 

 At different places, interbedded veins are cut across and 

 sometimes along their courses, by dykes of granite, and the 

 proximity of the intrusion appears to have had no effect 

 on the size or richness of the veins. 



Another evidence that the veins were formed prior to 

 the granite intrusion is the complete absence of any 

 disturbance or irregularity of the structures of the anti- 

 clinal folds and more especially of the domes at granite 

 contacts. This proves that the granite intrusion took place 

 at a time when the folding and doming of the quartzite 

 and slate, as well as the deposition of the veins resulting 

 thereof, were completed, otherwise the movements and 

 slipping of the beds which produced them would be mani- 

 fested by disturbances or faults along the line of the 

 granite contact. At Mooseland, on the western end of 

 the dome, interbedded quartz veins have been traced 

 continuously to the granite, without increase in size or 

 other irregularity of structure, but they gradually become 

 more crystalline and finally disappear at the contact 

 where they are apparently absorbed by the granite, like 

 the containing metamorphosed quartzite and slate. 



The observations of Prest in the western part of the 

 province give still further evidence leading to the same 

 conclusion. He reports that at Bear River no disturbance 

 was observed in the structure of the Nictaux-Torbrook 

 rocks at the granite contact, and as these rocks are con- 

 formably folded with the Goldbearing rocks, he concludes 

 also that the folding partaken of by both series must have 

 been nearly complete before the granite intrusion; and 

 further, as the Nictaux-Torbrook rocks are Oriskany, the 

 folding and the quartz veins of the Goldbearing rocks 

 would be later than Oriskany. Then, as the granite 

 intrusion was earlier than the Horton series, which is 

 referable to late Devonian or Lower Carboniferous, the fold- 

 ing and the deposition of the quartz must have taken 

 place during Devonian time, but earlier than the granite 

 intrusion. Finally, at Gay's river a conglomerate of 

 Lower Carboniferous age, largely made up of fragments 

 eroded from the Goldbearing slate, has been mined for 

 gold. The deposition of the gold in the Goldbearing 

 rocks must then have commenced before the Carboniferous 

 that is to say, during Devonian time. 



