178 W. R. BROWNE. 
14 to 2 miles north of where it is crossed by the Adaminaby 
road, the micaceous slates predominate, having interbedded 
with them occasional bands of smooth and knotted phyllite, 
as well as quartzite and a whitish-grey gritty variety of 
slate. 
The Slack’s Creek phyllites, as well as the schists, are 
conspicuously traversed by vertical joints running at a 
bearing of 80°, or nearly perpendicular to the strike. This 
system of jointing is noticeable along Spring Creek, at the 
Wallaby Rocks, and in other places where the schists out- 
crop. The phyllites are seamed with quartz veins and 
reefs. In general these bear no fixed relation to the strike 
of the country, but some have evidently been injected 
along the planes of schistosity. In some of the veins the 
quartz is strongly grooved and scored. 
To the east of the metamorphic complex the transition 
from schist to phyllite cannot be traced so clearly as on 
the western side, partly on account of the capping of 
Tertiary basalt concealing the outcrops, and partly on 
account of the pink and white gneisses at Bunyan being 
intruded just about where the transition band should be. 
The belt of phyllites is only about one-third as broad as 
the western belt. It can be seen at intervals along the 
Sydney Road between Cooma and Bunyan; in only a few 
cases could slight knotting be observed. 
Igneous gneisses.—Under this head are treated those 
three occurrences of gneissic rocks whose igneous origin 
has been proved beyond doubt, mainly by the presence of 
inclusions of the sedimentary schists and by definite evid- 
ence of intrusion. 
On the Murrumbidgee, between Mittagang Bridge and 
Wallaby Rocks, in the hilly country east of the Bridge, 
and along the Murrumbucca Road, representatives of all 
