II. 



THE JURASSIC SEDIMENTARY ROCKS AT CAPE FLORA. 



According to Prof. Nansen as well as to Dr. Kcettlitz, Messrs. E. T. 

 Newton and I. I. H. Teall, clay a soft gray-blue clay 500600 feet thick 

 forms the principal part of the strata underlying the basalt at Cape Flora. 

 Other rocks, such as shales, ironstone (?), clay-sandstone and lignite, are only 

 mentioned as elements of secondary importance in the composition of the 

 Jurassic strata in this region. 



Among the specimens of sedimentary rocks of Jurassic age collected by 

 Nansen and submitted to me for examination, pieces of clay are but rare; 

 the majority cannot even be called pure clay. 



No. 1. Grey-blue, grey and yellow calcareous clay in compact (to some 

 extent hard, concretionary) pieces with from reddish-brown to black weather 

 crust. This crust is rich in hydroxide of iron, so that externally the pieces 

 have the appearance of argillaceous ironstone 1 . Veins of calcite occur, and 

 irregular, to some extent swollen accumulations of brown-ironstone, arising 

 from pyrite. The stones contain partly calcified, partly pyritis ammonites 

 (with nacreous shells), fragments of belemnites, and indeterminable isolated 

 remains of small lamellibranchs. The greater number of pieces were found 

 on July 12th 1896, at a height of 100200 feet (3060 m.), IVa kilometer 

 NW. from Elmwood; cf. p. 17, "Doubtful horizon". One piece, of July 

 16th was found at a height of about 550 feet (150 m.) directly behind Elm- 

 wood; cf. p. 15, "Upper horizon". Other pieces collected on July 10th, were 



1 Newton and Teall often mentioned "ironstone" (1. c. pp. 493 495). I have not found 

 in the material before me, pieces which ought to be described directly as "ironstone". 



