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Within the area in question the following systems are 

 clearly proved to occur: Silurian, Devonian, Triassic, Jurassic, 

 (Rhaetic-Liassic as well as Middle and Upper Jurassic) and Ter- 

 tiary (Eocene). Except that the series of strata characterized by 

 Silurian fossils perhaps overlaps, in its lower part, into the 

 Cambrian, the following non-fossiliferous local series, arranged 

 in the order 1 consider they were most probably formed, may for 

 the present be distinguished: Cape Fletcher series. Hurry Inlet 

 series. Cape Brown series, and Cape Leslie series^). 



To the result of the paleontological examinations of fossils 

 from this district, 1 shall only refer very briefly in the following, 

 but, on the other hand, 1 shall dwell more exhaustively on a 

 petrographically descriptive account of the different systems 

 and series, setting out from those rocks whose age can be de- 

 termined from the fossils they contain. I will divide them here 

 into two main divisions: the reason for this classification will 

 be gone into more fully when I come to formulate my views 

 of the stratigraphy of the district. 



A. The older Prae-Rhaetic series. 

 (Mottled Rocks.) 



1. Silurian and DeTonian (with possibly Cambrian strata). 

 These rocks, which occur within the system of Kong Oscar 

 and Franz Joseph Fjords, have been described in detail by 

 Nathorst, who was also the first to point out fossils in them, 

 and thus determined their age. However, they are very poor 



M To these must be added the so-called Rode Ö (Red 1.) conglomerate, 

 described by Bay, which occurs quile isolated and about the age of 

 which nothing can be said, but which I prefer to consider as prae- 

 Rhaetic. The specimens of conglomerate pebbles seen by me seem to 

 consist chiefly of gneiss and quartzite, also quartz; the matrix consists 

 of splinters of quartz and felspar, joined together and coloured by iron 

 oxide, besides which calcite is not altogether lacking. Iron pyrites, 

 even in large lumjjs, seem to be common, and to their disintegration 

 the red colour, which gives the locality ils name, presumably owes 

 its origin. 



