24 
north of Narsak shows that the breadth of this belt decreases 
rapidly downwards it must be assumed that both portions of 
the batholite are in contact with one another a little below the 
floor of the valley. 
The igaliko batholite is situated at the eastern end of 
Tunugdliarfik Fjord and is of much greater dimensions. Of 
this batholite, however, only the more easily accessible parts 
in the vicinity of Igaliko and along the coasts have been visited 
by the writer. The highest point of the Igaliko batholite is 
Igdlerfigsalik (1750 meters). 
Scenery. — In its broad features the surface relief of the 
newer abyssal rocks has been produced by the same agencies 
which gave the surrounding mountains their form: first the 
inland-ice and subsequently the local glaciers. When exposed 
to the atmospheric agencies, to the actions of frost and changes 
of temperature, the batholitic rocks, however, behave in a very 
different manner from the rocks mentioned in the preceding 
pages: while the latter rocks are of a durable nature the newer 
abyssal rocks are subjected to mechanical disintegration on the 
largest scale. This rapid decay gives the batholites a very 
characteristic outer aspect. In the first place it prohibits vege- 
tation: the mountains are almost everywhere sterile and appear 
with the individual colour of the rock. In the second place it 
produces a relatively rapid degradation of the precipitous walls, 
and the accumulations of debris at their feet therefore reach 
very considerable dimensions. The occurrence of numerous 
large screes, which may attain heights of many hundreds of 
meters, is a characteristic feature in the scenery of the newer 
abyssal rocks, and as the decay rapidly attacks the loose blocks 
of the screes the latter are usually devoid of vegetation and con- 
spicuous at a long distance. 
Yet another result of the rapid mechanical decay of the 
newer abyssal rocks deserves to be mentioned, viz. the strong 
development of the process which J. G. Andersson has termed 
