320 
The stratified batholite. — Upon the map this part of the 
complex shows a roughly ellipsoidal outline, and is about 16 
kilometers long and 10 kilometers broad. It consists of a large 
number of coarse-grained rocks arranged as approximately hori- 
zontal sheets or strata one above the other. Each stratum ex- 
hibits a platy parting parallel to the upper and lower surfaces. 
The thickness of the successive strata is variable, but most of 
them are thinnest at the northern margin of the complex. As 
the topography of the region has not been surveyed in detail 
the thicknesses can only be given approximatelv. 
Between the top of the batholite and sea level the follow- 
ing stratified series are present (the figures indicate the thick- 
nesses): 
arfvedsonite-granite, 150—400 meters 
quartz-svenite, 0—20 meters 
pulaskite, 10—30 meters 
upper foyaite, 0—10 meters (?) 
sodalite-foyaite, 2—150 meters 
naujaite, 200—600 meters 
lujavrites, more than 600 meters. 
The lowermost series ‘the lujavrites’ to speak more definitely con- 
sists of irregular alternating sheets of arfvedsonite-lujavrite and 
egirine-lujavrite, and in the southern part of the batholite there 
is also a heavy series of kakortokite sheets occurring as an 
intercalation among the lujavrites. 
The character of the contact phenomena at the junction of 
the successive sheets is as follows: | 
1. The size of grains does not change appreciably towards 
the junction. 
2. There is a gradual transition from sheet to sheet, but 
the transition zones are generally rather narrow. Away from 
the transition zones each sheet seems to maintain a uniform 
composition. 
