52 
Iviangusat peaks, close to the fjord, the augite-syenite contains 
numerous fragments of sandstone (one of the fragments is 
shown in the drawing, PI. У, Fig. 3, and in the photograph, PI. 
XI, Fig. I). As these offer a much greater resistance to weather- 
ing than the augite-syenite, the larger of them project as dark, 
lichen-covered cliffs. There are four or five of these, forming 
short ridges with the direction almost north-south. The largest 
of the sandstone fragments is over 100 meters long and 50 meters 
broad; the dip of the sandstone beds is different in the different 
fragments, but usually steep (70—90°); in the 40 meters long frag- 
ment near the shore the strike was found to be $. $. E.—N.N. W., 
in a second fragment 5. $. W.—N.N.E., in a third S.—N. 
In addition to the large, small sandstone fragments also occur 
right down to such small dimensions, that a hand-specimen may 
contain two or three of them. 
This sandstone is very hard, almost quartzite-like; its 
colour is white with black spots formed by contact-metamor- 
phism, afew beds are uniformly black-gray. On closer examina- 
tion the black spots sometimes appear as short and broad 
pyroxene prisms of dark-green colour, quite filled with sand 
grains. 
These large sandstone fragments in the augite-syenite are 
of great theoretical interest. It is obvious, namely, that they 
have descended from above; this will be clear from the fol- 
lowing reason. In the whole Julianehaab region there is no 
other sandstone-formation than the Devonian sandstone (‘‘Igaliko 
sandstone”), and the fragments must therefore belong to this 
formation; their petrographic characters are in agreement with 
this, as they are quite the same as those of the Igaliko sand- 
stone at the places, where it has been metamorphosed by con- 
tact with the newer igneous rocks. The original position of 
the sandstone must therefore be above the Algonkian granite, 
which in the immediate proximity of the sandstone fragments 
rises 900 meters above them. ‘Thus, the conclusion seems 
