59 
Upper Palccozoic Rocks. 
Northward from the Mount Wellington Range, in the country 
watered by the Macalister, and its branches, the Barkly and 
Wellington Rivers, none of the igneous layers have been observed 
in situ, and the rolled fragments all appear to have come from the 
Wellington Range. Conglomerates, also, are of rarer occurrence 
and finer in character than in the Avon valley. 
The prevailing forms are brown micaceous sandstones, purple 
rubbly shales, some bands of hard grey gritty shales and flags, 
and a few line conglomerate bands. 
A general south-easterly dip at a low angle is observable in 
the Avon, and in various places in the Macalister valley ; but there 
Fl0 21. arc numerous local exceptions* 
The most abnormal dips ns re- 
gards direction and rate of incline 
noted by me are in the Macalister 
near Glencairn, where there are 
red rubbly mudstones and shales 
on coarse yellowish-brown sand- 
stones, dipping in one place S. 60° 
W. at 38°, and in another, a short 
distance away, S. 73° W. at 41°. 
The* dip obtained furthest north was in the Barkly River, 
close to the western line of contact of the Upper Paheozoic 
with the Silurian. Tho former consist here of hard gritty 
fla^s overlaid by sandstones and red rubbly shales dipping S.E. 
at 8°. (Fig- 21.) 
At tho Crinoline, a very conspicuous hill about 4,500 feet in 
elevation, between the Macalister and the Wellington, the rocks 
are nearly horizontal, and the outcrops of the harder beds on either 
side of the hill form a succession of cliffs, with steep grassy slopes 
between, which give the hill the appearance to which it owes its 
name. (Fig. 22.) Jifc aJIT , 
a Brown micaceous sandstone. 
b Purple rubbly shales. 
From Glencairn. 
From the summit of this hill the same appearances arc visible 
in the ranges on either side of tho Macalister and Wellington as 
far as the eye can discern ; cliffs and buttresses of the harder 
rock-bands forming nearly horizontal broken contour lines round 
the spurs of the mountains. Tho general appearance of the 
