1870. ] DUNCAN—AUSTRALIAN CORALS. 289 
upper deposit to have been formed under different conditions, but 
whilst, generally speaking, the fauna was the same throughout the 
area. 
Fig. 1.—Section in Moorabool Valley, showing the relation of the Ter- 
tiaries to the older rocks and the uppermost basalt. 
6 
The section at Moorabool Valley (fig. 1) shows :— 
5, Lia oer JSEVSENN o ssoogoocodosneqcdne ooscbedooaaobabene 
bo! (SENEIh7 {eitalh| SabedbdasbesonanA ods dqoaagedunoseBossaes 
- Coralline Limestone 
. Older basalt enclosing hard compact bands of 
limestone with fossils..................:000088 
Sancdiy@limestonessrene tes beieesmectee cesses: 30 
. Gravel and boulder-drift ........................ 90 
. Silurian slate and sandstone with quartz veins 
SOO Powe 
The relation of the fossiliferous Tertiaries to the contorted Teni- 
opteris-sandstones, near Cape Otway, can be seen in the sketch map 
executed by Mr, Wilkinson. 
The following is an abstract of Mr. Wilkinson’s admirable survey 
of the Cape-Otway district *. I have added the specific names of the 
corals to the notices of the localities whence they were derived :— 
“‘T will now direct your attention to the Miocene tertiary. Per- 
haps in no other portion of the colony can finer sections of this form- 
ation be obtained than in the cliffs along this coast. I would 
premise that the Carbonaceous range, which rises from the Salt 
Creek, near Loutit Bay, and attains an elevation of nearly 2000 
feet above the sea twelve miles north of Apollo Bay, and which 
again falls to Moonlight Head, seems to have been, if not an island, 
an elevated portion of the sea-bottom during the deposition of the 
Miocene strata. From the present position and general horizontal 
manner in which the uppermost beds of this series repose on the 
flanks of this range, I am inclined to believe they never wholly 
covered it. This formation occurs at intervals from the coast east 
of Loutit Bay, round the north side of the Dividing Range, to 
Moonlight Head, and thence to Cape Otway. Though not again 
seen to the east of the Cape for more than forty miles, there can be 
little doubt that it was once continuous from Moonlight Head to 
Point Addis. 
“The cliffs on the coast near Spring Creek, sixteen miles south 
of Geelong, expose a thickness of about 300 feet of Miocene strata. 
These have already been described in Mr. Daintree’s report and 
geological map of that district (quarter-sheet, No. 28, S.E.); but for 
the sake of comparing them with the strata between Cape Otway 
* Reports of the Geological Survey of Victoria, 
