SOUTHERN NEW BRUNSWICK. O D 



a narrow band of schistose petrosilicious strata of the Coastal (Huron- 

 ian) group (Division 4), which intervene between them and the basal 

 beds of the Primordial. 



In the eastern portion of the metamorphic area other rocks, presum- 

 ably representing the upper portion of Division 2, and embracing 

 limestones and dolomites of Laurentian aspect, are met with in eastern 

 Kings and Albert, forming two anticlinal ridges, which are separated 

 by the rocks of Division 4. 



The rocks of Division 3 are most extensively exposed along the Division 3. 

 county line of St. John and Kings. Their eastern limit is in the 

 northern part of Mechanic settlement in Kings county, where the 

 petrosilicious and slaty portions are found apparently resting upon 

 strata which bear some resemblance to those of Division 2 y from 

 which, however, they are in places separated by intrusions of diorite 

 and possibly by faults. West of Donegal settlement the rocks of this 

 group increase rapidly in breadth, and on the Shcpody road, where 

 they are well exposed between Hammond River and Londonderry post ■ 

 office, they have a superficial breadth of about seven miles. Over 

 portions of this area, however, as in Long and Filamaro. settlements, 

 they are in part covered and concealed by the schistose and amygda- 

 loidal beds of Division 4, which also flank them upon their northern 

 and southern sides. At Handford Brook and thence westward to St. 

 John, the Huronian rocks are separated into two belts by the Primor- 

 dial Silurian (Cambrian), and they are also covered over, on the east 

 side of St. John Harbour, by the Mispeck Devonian. With the possible 

 exception of Mechanic settlement, no instances of direct superposition 

 of the rocks of Division 3 on those of Divisions 2 and 1 have been 

 observed. As, however, the rocks of that division, being largely made 

 up of volcanic or semi-volcanic material, are extremely variable in 

 thickness and character, but little stress can be placed upon their 

 absence, while the distinct superposition of Division 4 upon Division 

 3, as well as upon Division 2, leaves no reasonable doubt as to their 

 true succession. 



The relations of Division 4, the so-called former Coastal group, to the Division 4. 

 petrosilicious rocks of Division 3 are well seen along either of the roads 

 running southerly or south-easterly across the county of St. John, but 

 especially along the line of the St. Martins and Upham railway, between 

 TJpham and Quaco, or on the Lower Quaco road either side of Blooms- 

 bury Mountain. In passing from the one to the other at these several 

 points, there is often, though not always, a somewhat abrupt change of 

 dip, the higher beds, or those of Division 4, dipping at a much lower 

 angle than the beds upon which they rest, while along the same line of 

 contact it is not uncommon to find masses of coarse breccia conelomer- 



