350 INDEX TO THE STRATIGEAPHY OF NORTH AMERICA. 



In the third belt of limestone, which outcrops along Kane and Steamboat creeks, the only 

 fossils found were fragments of round crinoid stems; the fourth belt, on Little Applegate River, 

 contains both round and pentagonal crinoid stems well preserved. . The general absence of 

 other fossils from these two belts suggests a difference in age from the Devonian, and it is 

 probable that they are either Carboniferous or Triassic. 



K-Ii 11-13. IDAHO AND SOUTHWESTERN MONTANA. 



The area mapped as Paleozoic in Idaho and southwestern Montana covers the 

 mountains on both sides of Salmon River. It is little known geologically. Weed, 

 Lindgren, and Willis have reconnoitered portions of it and furnished the notes on 

 which the outhnes are sketched. 



K-L 18-19. NEW ENGLAND. 



In New England rocks which were formerly regarded as Archean have been 

 shown by the work of B. K. Emerson,^^^ George Otis Smith/^" E. S. Bastin," and 

 C. W. Brown to be of Paleozoic age. They are, however, so metamorphosed that 

 separation is difficult, and in the zone here mapped as Paleozoic the distinct systems 

 are not yet certainly correlated with definite periods. 



M 9-10, N 8-9. VANCOTTVEE. ISLAND AND QUEEN CHARLOTTE ISLANDS. 



For data on Vancouver and Queen Charlotte Islands, Dawson, Webster, Hay- 

 cock, and Clapp may be consulted. In 1878 Dawson ^^^ explored and mapped 

 geologically the Queen Charlotte Islands, reporting the discovery of fossils which 

 determined the Triassic age of a certain zone of argUlites and limestones repeated 

 in many sections along different parts of the coast. But he also states his belief 

 that "from the intimate association of Carboniferous and Triassic rocks in the 

 southern interior of the province, and more particularly from the occiu-rence of a 

 great mass of rocks largely volcanic in origin and believed to be Carboniferous in 

 age, in the southern part of Vancouver, it is highly probable that rocks of this 

 age may come to the surface in some places." 



In 1885 Dawson ^'^ examined the northern part of Vancouver Island and stated: 



The geological resemblance between the part of Vancouver Island which is here described 

 and the southern half of the Queen Charlotte Islands is extremely close. This resemblance 

 had previously been reported on by me ia general terms and was iadeed to be expected, as 

 the Queen Charlotte Islands and Vancouver Island form portions of a single axis of elevation 

 which here constitutes the western member of the CordiUera. 



Webster,*''*'' in his report on the west coast of Vancouver, says : 



In describiag the geology I shall use the late Dr. G. M. Dawson's nomenclature as far 

 as possible. * * * In his description the igneous dark-colored trappean rocks with asso- 

 ciated mica schists and gneisses are said to be interbedded with argUhtes and crystaUiae 

 limestones, classed as Triassic on the evidence of the fossils discovered ia the argiUites and 

 named the Vancouver series. On the west coast of Vancouver Island, however, we find the 

 igneous rocks piercing and including fragments and masses of the crystalline limestones, just 

 as the granites at and near their contact with the traps pierce and include the latter. Nowhere 

 did I see clear evidence of the limestones being interbedded with the traps, though in many 

 places at first view there is every appearance of their being so. I therefore look upon the 

 limestones as being older and unconformable. 



