FAULTS. 
As we have mentioned (p. 260) the area inside which the 
red sandstone is to be found is limited, to the north as well 
as to the south, by large faults with a main direction E. N. E. 
to W.S.W. The exact position of the northern fault-line which 
lies entirely inside the granite territory is not known, but most 
likely it crosses the Tunugdliarfik Fjord somewhere near Kiag- 
tut. The southern main fault runs about two kilometers south 
of Igaliko along the northern slope of the mountain Nulup 
Kaka. This fault is most obvious when the mountain is looked 
at from the fjord or from the opposite coast. It is almost 
vertical, and strikes from W. 10° S. to E. 10° N. The vertical 
displacement amounts to 800 meters at least, this being the 
altitude to which the granite rises closely south of the fault, 
whilst on the northern side the basis of the sandstone is below 
sea level. Just north of the fault the sandstone beds dip abruptly 
in a northern direction, or in some places they lie irregularly, 
but within a short distance from this place they are nearly 
horizontal. 
Faults have been observed also inside the sandstone area, 
but they are not very common, and, as a rule, the throw is 
only insignificant. The fault through the Iganek Mountain 
forms an exception (vide map Pl. IV and Fig. 24 on next 
page). The strike of this fault is about N. 60° E. and S. 60° 
W., the southern side has subsided, and the down-throw is 
about 400 meters. The sandstone strata in the southern part 
of the mountain are inclined at an angle of about 8° to N. N. 
W., whilst the highly contact metamorphosed beds covering 
the granite north of the fault dip about 33° Е. 10° N. (vide Fig. 
Zip. 252). 
A fault, probably the continuation of the Iganek fault, 
is to be seen on the western side of the fjord a little north of 
Igaliko (vide map, Pl. IV). The extent of the vertical displace- 
