The marine Carboniferous of North-east Greenl. and its 15rachiopod Fauna. 539 



Dr. Wegener on the land that lies nearest to the camping place of 

 4/5, and the probable place for the Cape Jungersen section is marked 

 on the map PI. XXX according to this statement. 



Up to a height of 65 metres above the sea, the foot of the hill 

 is covered with talus; at the height mentioned there begins a white 

 limestone (N:o i 12) in which, at a height of 70 metres above sea- 

 level, there is interstratified a 5 metres thick bed of a light-gray 

 limestone {ISl-.o 135) with a somewhat reddish or yellowish tinge. 

 This limestone is very dense and somewhat splintery, and, of fossils, 

 contains some bra- 

 chiopods, among 

 which Dielasma sp, 

 whose shells in 

 this dense rock are 

 entirely decompo- 

 sed, so that they 

 cannot be specifi- 

 cally determined. 

 The white lime- 

 stone {N:o 112), 

 presents some pe- 

 trographical pecu- 

 liarities Avhich it 

 possesses in com- 

 mon with a lime- 

 stone (N:o 102) 

 which has been 

 obtained at a some- 

 what higher level, 

 between 100 and 

 110 metres above 

 the sea. A detailed 



description of the structure of these two rock-species will, therefore, 

 be given below. 



N:o 102 is a stratified limestone without megascopic fossils; it 

 is of a light gray colour with black particles. On a closer examin- 

 ation of a surface of stratification it is found that this rock is, so 

 to say, "a conglomerate in miniature", for the surface in question 

 presents numerous, somewhat irregular rounded or oblong grains 

 about 1 to 2 mm. in length, which often possess such a smooth sur- 

 face that, in the case of grains of a more regular form, one is led 

 to imagine the possibility of an organic origin, ostracodan shells, 

 for example. The microscopic examination spreads full light on the 



Fig. 0. Slide of the ^гау limestone, specimen N:o 102, 

 from the Cape Jungersen section. Enlarged 12 diam. 



