GEOLOGY OF NORTH GIPPSLAND, VICTORIA. 29 
beds as a continuation of those of Iguana Creek, and therefore Upper 
Devonian, rather than as belonging to the Avon Sandstones, which 
are comparatively near at hand to the west. 
The nearly vertical quartzites and thin slaty shales which, at 
Maximilian Creek, seem to represent the indurated shales and sand- 
stones of Tabberabbera, have been cut across by a very strong dyke 
of compact and, in some places, vesicular diorite. Possibly only as a 
coincidence this dyke shows prominently at the two localities where 
the most remunerative alluvial gold-workings have been met with. 
Proceeding up the Mitchell River to where it is joined by the 
Moroka River, which rises among the almost unknown defiles of the 
great mountain mass north of Castle Hill and Mount Wellington, we 
find the picturesque mountain known as the Snowy Bluff, standing at 
the junction of those rivers. It rises immediately from the yalley, 
first buttressed by rugged forest-covered ridges, then up to the sum- 
mit with a series of encircling precipices and steep grassy slopes. 
The height of the Snowy Bluff is about 4500 feet above the sea. 
This, perhaps the grandest natural section in the Gippsland moun- 
tains, gave me the following section (fig. 10), which I have condensed 
in order that the features may be brought somewhat into more 
prominence and less space. 
Fig. 10.—-Diagram Section of the Snowy Bluff. 
Mitchell River. 
About 5000 feet. 
—— 
a. Slates aud Sandstones (Silurian ?). h. Alternating red sandstone and 
6. Coarse conglomerate. slaty shales, with two felstone 
c. Red Sandstone. beds. 
d, Biner conglomerate. 2. Melaphyre. 
e. Red sandstone and red sandy shale. k. Coarse reddish sandstone. 
f, Porphyritic and quartziferous felstones. /. Quartz conglomerate. 
g. Yellow and red slaty shales. 
We sce here on an enlarged scale the same group of strata which 
is met with at Tabberabbera, the Mitchell River, and Maximilian 
Creek. Of the nearly vertical slates and sandstones forming the 
basis of the section I can say no more than that they are evidently 
part of the “‘ Paleozoic rock foundation,” and are not unlikely of 
the same age as the auriferous rocks, near at hand, of the Wonan- 
gatta, Wongungarra, and Crooked Rivers. Theoverlying sedimentary 
