CHAPTER V. 



PROBLEMS FOR INVESTIGATION AND SETTLEMENT. 



I.— Local problems within the subdivision of each province. 

 II.— Problems affecting our knowledge of the Cambrian group as a whole or in large parts. 

 III.— Problems of nomenclature and classification. 



LOCAL PROBLEMS. 



There are many local problems that are not mentioned in the follow- 

 ing notes. With the settlement of the more important questions they 

 will assume prominence, and some of them may prove to be equal to 

 if not of more import than those now suggested for investigation. 



Newfoundland. — The prominent questions are : 



(1) The determination of the relation of the Cambrian rocks of St. 

 Mary's and Trinity Bays to the basal conglomerate in the Manuel's 

 Brook section, to ascertain if a series of Cambrian strata occurs between 

 the lowest recognized Cambrian on Conception Bay and Manuel's Brook 

 and the pre-Cambrianrocks of Trinity and St. Mary's Bay, as thought 

 by the Newfoundland geologists. If such a series be found its fauna 

 should be carefully collected and studied with reference to its being 

 basal Cambrian or pre-Cambrian. 



(2) The discovery of an unbroken stratigraphic section to prove the 

 assumed relations of the Paradoxides fauua to the Upper Cambrian 

 fauna. This will probably be found in the vicinity of or on the shores 

 of the peninsula west of St. Mary's Bay and the shores of Placentia 

 Bay. 



(3) The determination on the west and northwest sides of the island 

 of the relations of the Olenellus bearing strata to the subjacent and 

 superjacent beds and the character of the section from its base to the 

 limestone carrying the Calciferous fauna of the Silurian (Ordovician). 



(4) The study of the geographic distribution and detailed sections of 

 the strata on the southwestern and northeastern coasts. 



(5) The relations of the Cambrian strata to the superjacent beds of 

 the Silurian (Ordovician) wherever they can be found in the same sec- 

 tion. 



Nova Scotia. — The important question in Nova Scotia, as in Maine 

 and New Hampshire, is the determination of the geological age of the 

 slates referred provisionally to the Cambrian. After this come the 

 local details of the sedimentation and paleontology of the Cambrian 

 terrane. Until the first is decided very little except conjecture can be 

 used in the correlation of the slates with the Cambrian or other groups. 

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