70 
over which the surface gradually rises to a height of 320 meters. 
Near the northern end of the sheet there are several small, 
projecting cliffs of a light greenish, coarse-grained arfvedsonite- 
granite. Each of these masses is only some few meters in 
extent and is connected by a gradual transition with the 
pulaskite. From their mode of occurrence at this place one is 
inclined to consider them as local magmatic segregations of the 
pulaskite; but this is improbable when the conditions north of 
Tunugdliarfik Fjord are taken into account. As will be described 
in detail later, we find there a heavy sheet of arfvedsonite- 
granite which rests upon the sodalite-foyaite and as a transit- 
ional zone between them there is a sheet of this same pulaskite. 
It seems reasonable to conclude, therefore, that the sodalite- 
foyaite between Tunugdliarfik and Kangerdluarsuk has also 
originally been covered by a sheet of arfvedsonite-granite, and 
that the small arfvedsonite-granite masses south-west of Tu- 
persuatsiak are the only remains, left by erosion, of this sheet. 
FROM TUPERSUATSIAK TO AGPAT. 
But few lujavrite veins occur in the naujaite at Tupersuat- 
siak. Passing eastward from here over the coastal cliffs, the 
lujavrite veins become more numerous and broader (cf. Fig. 11, 
p. 68), and the naujaite is reduced to large lenses or fragments, 
which are quite surrounded by black arfvedsunite-lujavrite. These 
naujaite fragments are often as large as houses, more than 50 
meters long and 10 meters high. The structure of this char- 
acteristic igneous breccia is best seen in the photograph Pl. 
XI, Fig. 2, which represents a vertical cliff-wall facing the south, 
about two kilometers east of Tupersuatsiak. 
Further to the east the naujaite fragments become rarer 
and the hills consist almost entirely of black and green 
lujavrite. This does not crumble so rapidly as the naujaite; 
the hills rise higher and more steeply, and there are many 
small lakes between them. Towards the fjord the lujavrite 
