46 
in sheets of varying thickness. The red sheets only begin to 
appear somewhat higher up; at an altitude of 200 meters we 
meet with splendid sheets of the red variety (Fig 7); here the 
sheets dip about 16° towards N. 10° W. Passing from here 
further up towards the east, the distinctly red sheets cease, 
but the black and white continue to alternate up to about 
350 meters above the sea, where they are replaced through a 
gradual transition by a uniform, more finely grained and moder- 
ately dark kakortokite, which upwards passes into lujavrite. 
South of the river the alternation of the white and the black 
sheets continues right up to over 400 meters. 
In the western part of Kringlerne, north of Iviangusat 
Mountains, there is a spot about 180 meters above the sea 
where the thicknesses of some few successive kakortokite bands 
could be measured. 
The measurements were (from above downwards) : 
white sheet ...... thickness not measured 
red ==) gence — 1} meters 
black == ee — 34 — 
white — ...... — mn == 
red ae — 2 — 
black 2 — ee — not measured 
Down by the fjord at the west end of Kringlerne the single 
sheets were unusually thin (0`1—2 meters) and not specially 
distinct; at this place the dip is 30° towards N. 35° W. 
The average thickness of the white kakortokite sheets may 
be estimated at 6 to 8 meters, and the black usually have only 
a third of this thickness; when red sheets occur they have a 
similar or somewhat less thickness than the black. A very 
characteristic feature is, that the red sheets are situated im- 
mediately below the white; each red sheet rest upon a black, 
not on a white sheet. 
Relation to adjacent rocks. — As briefly mentioned above 
(p. 38) the kakortokite is both covered by and rests upon lujav- 
rite on the west side of Laxefjæld. The junction is exposed 
