Frof. A. E. Nordenskibld — Geology of SpUzhergen. 73 



After the Saurian remains, a number of large and beautifully pre- 

 served Cephalopoda excite attention. The succession of strata, at least 

 to outward appearance, is exceedingly uniform. We have — 



1. (Lowermost) A thick stratum of black unfossiliferous clay- 

 slate. This stratum is to be found exposed on the south bank of the 

 river which intersects Eeindeer Yalley. 



2. Horizontal strata of black slate and seams of limestone con- 

 taining a great many fossils, which, however belong only to a few 

 species, among which may be named Halobia Zitteli, Lindstrom, and 

 several Cephalopoda strongly pressed together and crushed. These 

 strata form the rocks at the outermost point of Cape Thordseu. 



3. A stratum of diabase, which at least at Cape Thordsen overlies 

 the foregoing stratum, and the surface of which has been split up by 

 frost into heaps of stone and gravel, probably formed in situ of frag- 

 ments of the diabase stratum. 



4. Strata of a dark-grey irregular schist, alternating with seams of 

 limestone containing more or less silica, taking up the greater part of 

 the rocks along the shore between a diabase point on the south side 

 of Cape Thordsen and the house built by the Ice Sound Company. 



5. Slates with limestone seams, containing large round nodules, in 

 which are often to be found immense Ammonites, bones of Saurians, 

 and some bivalves, among which Daonella Lindstromi, Mojsisovics. 

 On the east side of Eeindeer Valley the limestone is believed to 

 preponderate, so that the coprolites here are immediately underlain 

 by a grey limestone, containing magnesia or dolomite. 



6. A thick stratum of black bituminous slate, containing coprolite 

 nodules and alternating with a stratum of pure coprolites, containing 

 commonly up to 23 per cent, of phosphoric acid. Besides coprolites, 

 there also occur bones of Saurians and fishes. 



According to analyses by Mr. G. Lindstrom, the Assistant in the 

 Mineralogical Division of the Eiks Museum, these strata contain : 



abed 

 ... 54-40 ... 89-84 ... 54-69 ... 22-35 

 ... 2-39 

 1-15 

 •14 



Carbonate of lime 



,, magnesia 



,, protoxide of iron 



Sulpliate of lime ... 



Alumina 



Incombustible residue insoluble in acids 



Chlorine 



Bituminous matter and moisture 



Phosphoric acid 



Oxide of copper 



401 

 32-31 

 trace 



5-60 



89-84 



trace 



•19 



trace 



1-95 

 6-20 



trace 

 1-82 



trace 



20-56 ... 1-45 



4-80 ... 8-93 



•14 ... -60 



-34 (& Fe) 9-66 



18-55 ... 45-49 



trace ... ti-ace 



• ... 11-06 



... -52 



. . . trace 



100- 



100- 



Lime 



Magnesia 



Protoxide of iron 



Incombustible residue insoluble in acids 



Chlorine 



Fluorine 



Bituminous substances and moistui'e 



Phosphoric acid 



Sulphuric acid 



99-08 



e 

 42-67 

 trace 



•58 

 16-01 

 trace 



-86 

 16-59 

 23-49 

 trace 



100- 



100^ 



