38 
II. T. FERRAR. 
a uniform thickness of about 2000 feet. As it rises to the eastward it forms the 
highest third of the hill D 3 and caps the hill D 4 . 
Below I) 2 another light-coloured rock, a grey biotite-granite (708), protrudes 
through the ice, and may be followed for a distance of over 10 miles along the side of 
the valley. The upper surface of the granite is very well marked and forms an almost 
horizontal straight line, but near the hill D 3 it becomes somewhat undulating (Fig. 18). 
This granite forms the greater part of D 4 , and finally forms the summit of the hill m. 
It is probably at least 4000 feet thick. Below D.> the junction of the lower dolerite 
with the grey granite is 500 feet above the ice, as measured with an aneroid barometer, 
and about 3000 feet above sea-level, and it would seem that the surface of the granite 
slopes west at an angle of about 2°. This spot is five miles east of the pink granite 
at D, eight miles N.N.W. of the granite at Cathedral rocks, and ten miles N.W. of 
the granite at G 3 . 
Grey augen -gneiss forms the base of D 4 , and was again encountered at the foot 
of m (727). At this last-mentioned spot, as stated in the foregoing chapter, the 
augen-gneiss adjoins the metamorphic limestone, but a glacier completely covers their 
junction. From a distance it was seen that the junction must occur just where the 
higher and western part of the Kukri Hills ends and the lower and more uniform 
eastern part begins. The augen-rock must be more than 3000 feet below the 
dolerite-granite junction and at least eight miles east of the hill D 2 . 
From a consideration of the above it would seem that the grey granite of these 
hills is older than the dolerite which rests upon its even upper surface, but that the 
pink granite of D is intrusive and later than the dolerite. 
In Moraines. 
Fifty miles inland, at a height of 4000 feet above sea-level, small and large 
boulders of both grey and pink granite (G93) were found on the side of Beacon Height 
West. They were resting upon a surface of the Beacon Sandstone. The spot where 
these fragments occur is some distance up one of the Dry Valleys. As the land south 
of the Dry Valleys rises to over 7000 feet in height, it is possible that among these 
peaks granite occurs at a greater elevation than 4000 feet, and has been brought 
down to its present place upon the sandstone by the ice which once occupied 
the valleys. 
On the slope of Knob Head Mountain (B,,) there were huge boulders of granite 
at a height of 4000 feet above the sea, but no granite was found in the upper 
part of the mountain itself. About one-tliird of the material of the moraines in 
the South Arm consists of granite- blocks, and all varieties appear to be there 
represented. 
