46 
The Queensland Naturalist June 1947 
few feet brought the high sand and mud banks which now 
form the plains out once more. This suggestion of emer- 
gence is perhaps supported hv the occurrence of two 
ware-cut platforms some feet apart around the rocky 
headlands; and bv boulder beaches, partly overgrown, 
some distance inland from and above the present shore 
line, between the headlands. 
Black sands rich in magnetite and heavy minerals are 
common in the sand-banks and beaches at the mouth of 
the Noosa River. Near the mouth the river migrates — 
sometimes it is close to the southern bank, sometimes 
further out. Some of the sand islands in the estuary are 
very young and unvegetated ; the ones to the south seem 
older and are vegetated. 
An interesting white qurrtz gravel is seen in the 
low ridges on the south bank of the Noosa River, between 
Lakes Cooroiba and Cootharaba. The farm “Restdown,” 
and its neighbour, are built on it. The gravel is rather 
small in size, and its origin and age are unknown. 
Quite apart from the geology, the coastal features of 
Noosa are particularly interesting — •there are fine pot- 
holes — particularly at the Boiling Pot; and some striking 
gulches — such as Hell's Gate and the Devil's Kitchen; 
also the Paradise Cave; these gulches and the cave seem 
to have been formed by the waves plucking out the blocks 
between two major joint planes in the quartzites. 
1 am indebted to Dr. F. W. Whitelmuse for much of 
the information concerning areas not visited on this 
excursion. 
LITERATURE 
Ball, L. C. 1924. Report on Oil Prospecting, near Tewantin- 
Queensl. Govt. Mining Journ., p. 354. 
Jensen, H. I. 1906. Geology of the Volcanic Area of the East 
Moreton and Wide Bay Districts Queensl. Proc. Linn. Soc. 
N.S.Wales. 
Jensen, H. I. 1926. Oil Possibilities in Queensland. Queensl. 
Govt. Mining Journ., p, 45. 
Rands, W- H- 1889. Geol. Surv. Queensl Pub. 49 (Ann. Prog 
Rep. 1888) p. 6. 
Rands, W. H. 1891. Coal in the Parish of Noosa. Geol. Surv. 
Queensl. Pub. 64. 
Rands, W. H. 1891. Geol. Surv. Queensl Pub. 77 (Ann. 
Prog- Rep. 1890) p. 11.. 
