16- 



Long island described above. Mr. Fletcher in the Report of Progress 

 for 1876-77 at page 413 gives a section of the rocks on this stream. 



Coldbrook I n the valley of the Mira river the Coldbrook terrane appears in 



in valley of great force. At McCodrum hill on the Morley road, one meets with 



>er ' much felsite breccia at the top of the hill and on the slope toward the 



Mira river. It consists of, first a dark gray, white-weathering felsite, 



then felsite of a brick-red colour whose fragments have been scattered 



by glacial action over the low lands of the Mira valley to the south. 



On the opposite side of the Mira valley are extensive exposures of 

 the Coldbrook effusives. Bengal settlement is located on these rocks 

 and towards its eastern end at the road, there are considerable expos- 

 ures of red breccia-grit having a purplish-red paste with imbedded 

 angular fragments cf gray felsite. 



Lar^e area of The extent of these i ocks south of the road was not ascertained, but 



felsites oast of , 



Mira river. they extend 200 yards north or the road, across the strike, and dip 



N. 30 W. mag. <60\ and are overlain in that direction by greenish- 

 gray, white weathering, and red-weathering schistose felsite, having 

 a few small angular fragments of felsite imbedded, with the same dip 

 as the breccia grit nearer the road. The upper felsites, 200 yards north 

 of the Bengal road, would correspond to the red felsites of McCodrum 

 hill in age, and are overlain by the next terrane, the Etcheminian, which, 

 where its measures are exposed along the base of these effusives two 

 miles to the west on the Bengal road, dips N. 50 W. mag. < 80. 



Mr. Fletcher's reports show that from the valley of the Mira river 

 to the Atlantic coast, and along this coast from Scatari island to 

 Forchu bay and Framboise, there is an extensive tract occupied by 

 felsites an 1 breccias, an 1 it may be surmised that this was an import- 

 ant centre of eruption in Coldbrook time, such a centre as, in the 

 province of New Brunswick, existed in the eastern part of St. John 

 county. The great mass of diorites, felsites and amygdaloids forming 

 the Quaco hills of that district have been described by Dr. L. W. Bailey 

 in Report of Progress 1877-78, pages 10 DD. to 21 DD.,&C, 



Fossils in the The only place where this terrane was observed to be fossiliferous 

 Coldbrook at 



Dugaldbrook. was at Dugald brook, a branch or Indian brook on East bay ; the sec- 

 tion on that brook is described in connection with the following 



O 



terrane. 



THE ETCHEMINIAN TERRANE. 



A long narrow basin of Cambrian rocks extends from George river 

 station to the head of McLeod brook, past Barachois station and harbour 



