1899] Barlow — Archaean Conglomerates. 209 



are known to exist, but will serve to indicate a few of the more 

 important and typical localities. Besides these, pseudo-con- 

 glomerates also occur near the line between Cons. VII and VIII 

 in the township of Monmouth on the Monck Road, a short dis- 

 tance east of Hotspur P.O., and also to the east of the southern 

 extremity of Pine Lake on lot 18 con. I of the township of 

 Cardiff. With the possible exception of these two last-named 

 occurrences, all of the exposures of these pseudo-conglomerates 

 met with admit of a very adequate explanation as of autoclastic 

 origin. It is proposed, in the light of recent experience, to re- 

 examine the localities mentioned in Monmouth and Cardiff to 

 determine if possible the exact nature and relations of these ex- 

 posures, which seemed to present such strong resemblences to 

 stretched conglomerates. 



In the northern part of the Township of Tudor, several large areas 

 are occupied by massive igneous plutonic rocks which are clearly 

 batholitic in their origin and behaviour. In common with other 

 known occurrences of similar material encountered throughout 

 this district, these intrusive masses are believed to contain a great 

 varietyof irruptive plutonic material ranging from gabbro and dia- 

 base on the one hand through diorite and hornblende-granitite, to 

 granitite, pegmatite and lastly quartz representing the last secre- 

 tions of the magma from which all have successively crystallized. 

 On the other hand, certain of these masses are relatively much more 

 basic than others, with gabbro and gabbro-diorite as the prevail- 

 ing rock type, while others again, in areas not far remote, are 

 decidedly acidic with ordinary granitite as the representative in- 

 trusive. The batholites are wrapped around by great mantles 

 of the limestones, shales and amphibolites of the Hastings 

 Series. Usually a perfect conformity if such it can be called, 

 exists between the two, although it is quite evident from the 

 curved and divergent strikes that the stratified series has under- 

 gone considerable displacement, while in certain places the 

 limestones, &c , abut against and are cut off by the intrusion of 

 the batholite. Two of these batholites occur in the northern 



