Mesozoic Rocks. 
79 
Rivers, form the boundary between the Silurian on the north and 
the Mesozoic rocks on the south. The actual line of contact is 
completely hidden so far by great accumulations of Tertiary 
sedimentary and volcanic layers, which occupy the valleys and 
flank the slopes on either side. From the junction of the Morwell 
and La Trobe Rivers, for a distance of about 10 miles easterly, 
the Mesozoic rocks, in the form of a broad patch resting against 
the slopes of the Silurian rocks, extend hack for several miles on 
the north of the La Trobe valley, and of their northern line of 
contact with the Silurian rock good sections are visible in the 
Tyers River and Rintoul’s Creek. (Figs. 26 and 27.) 
Fig. 27 .— Approximate Section of Bintoul’s Creek Beds. 
S.E. 
About 
250 feet 
above 
sea-level. 
Upper Silurian. Mesozoic conglomerate. Sandstones and shales. Coal-seam. 
The widespread Tertiary and Post-Tertiary deposits of the 
La Trobe valley, and (hose continuous thence round the eastern and 
'southern terminal slopes of the Mesozoic tract which lies between 
the La Trobe and (he coast, effectually conceal the eastern limits 
of the Mesozoic rocks and their lino of contact with the Upper 
Palaeozoic rocks of the Macalister, or any formations that mav 
intervene between the two groups. The south-western extension 
of the Mesozoic rocks visible between Western Port and Ander- 
son's Inlet and the south-eastern extension of those eastward 
from Corner Inlet pass under the sea, but to what distance cannot 
be determined. 
Except a small outcrop of Silurian rocks at Turton’s Creek 10 
miles north of Corner Inlet, the entire area within the above- 
described boundaries consists of Mesozoic rocks more or less over- 
laid and flanked tip to elevations of about 1,000 feet by Tertiary 
sedimentary deposits and volcanic rocks. 
The Western Port and South Gippsland Ranges are similar in 
physical character and vegetation to those of the Cape Otway 
district. Their highest elevations, Mount Fatigue — and some 
points of the Strzleeki Range— slightly exceed 2,000 feet above 
the sea. 
The rocks of Griffith's Point, Kilcunda, and Cape Patterson 
resemble those of the Otway district. The same descriptions of 
sandstone and shale occur in the eastern and western Mesozoic 
F 2 
