13 
the deposit was worked for a short time, and on that occasion 
fifteen tons of ore are said to have been shipped to London 
(1852). Some years ago the locality was again visited by mining 
engineers, but the results were unsatisfactory. 
Geological age of the Julianehaab granite. — As already 
mentioned the age of the granite cannot be fixed with full 
certainty, but several facts support the hypothesis of a late- 
Algonkian age. In the first place, it should be pointed out 
that granitic rocks similar to the Julianehaab granite in petro- 
graphical characters, have a very wide extension in the southern- 
most part of Greenland (see Plate I). They cover — with inter- 
ruptions — an area which in a direction from east to west 
measures about 300 kilometers, and from north to south they 
extend over perhaps an even greater distance. This greatly 
extended distribution may be taken as a strong indication of a 
pre-Cambrian age. Secondly, the relation of this granite to 
the Arsuk group is of importance. The latter is separated by 
a strip of gneiss from the nearest granites of the Julianehaab 
type, but the distance is only twelve kilometers. Since the 
Arsuk rocks have been greatly influenced by tangential stresses 
while the granite does not show any trace of cataclastic structure, 
it is highly probable that its consolidation took place later than 
the processes which folded the rocks of the Arsuk group or, 
in other words, the granite must be younger than the Arsuk 
group which is probably of late-Algonkian age. Thus, judging 
from our present knowledge of the geology of South Greenland, 
it appears reasonable to attribute a late-Algonkian age to the 
Julianehaab granite. 
RED SANDSTONE (IGALIKO SANDSTONE) AND 
VOLCANIC SHEETS. 
The central part of the district we are here considering 
(Plate Il) consists of a formation of red sandstone which is in 
some places overlain by a succession of volcanic sheets. The 
