30 



POMPECKJ. JURASSIC FAUNA OF CAPE FLORA. [norw. pol. exp. 



The composition of these two formations also seems to point to quite 

 different conditions of deposition, which in my opinion makes it impossible 

 that they should belong to the same horizon. The clay beds at Cape Flora, 

 as far as I have seen, are, compared with these sand strata, considerably 

 more uniform in their composition all through, from sea-level up to the base 

 of the basalt; and the conditions of deposition, though varying, seem to have 

 been considerably less so during their formation. They seem to have been 

 deposited in comparatively shallow sea, and there is little indication of great 

 oscillations of level. Not so with the sand strata south of Elmwood, and the 

 sediments at Cape Gertrude. The extraordinary number of thin beds of 

 diverse character in these formations points, as Newton and Teall sayS „to 

 rapidly varying condition of depositions, and possibly to oscillations of level, 

 while the beds of lignite indicate, to some extent at least, a fresh-water 

 origin". I do not consider it possible, if the conditions of deposition varied 

 so rapidly at Cape Gertrude, that there should be no indication of this rapid 

 variation in the corresponding deposits at Cape Flora hardly 4 miles (7 kilo- 

 metres) off; and if there have been oscillations of level, they must have occurred 

 in both places. 



;M»/t, 



(^■f.ftsfsS:rtWiliVi23fi:i,yt<-ri?iit%'^S-SsVy^V.'.-. 



et-*-'°.r°o'^°°> '^j' ° «g.^.g.fy'=.«'a'='o''°'=- 



(.00^- 





•550\nt 



■IDOn 



Fig 7. Diagrammatic section through the southern face of Cape Flora, illustrating the 

 succession of geological forinations- a Lowest fossiliferoiis horizon (see p. 11). 6 Thin 

 alternating strata of sand with hlack carboniferous seams, probably underlying the former 

 horizon a (see p. 12). c Medium fossiliferous horizon (see p. 13). d Upper fossiliferous 

 horizon (see p. 14). / Strata immediately underlying the basalt (see pp. 15, 16—17). I— VII 

 Successive tiers of basalt. I Plant-bearing bed between second and third tiers (see p. 24). 

 h Plant-bearing bed probably between third and fourth, or between fourth and fifth tiers 

 (see p. 25). J. C. Ice-Cap. 



L. c. 1897, p. 503. 



