62 
Geology and Physical Geography : 
horizontal. The beds resting against the granite on the south side 
are flinty shales dipping north-easterly, and slightly metamor- 
phosed by silicification. The Mount Tambo beds thus form the 
remaining vestige of a synclinal fold of Upper Palteozoic rocks 
resting in a trough or hollow of the Lower Palaeozoic sedimentary 
and igneous rock foundation. 
Mr. Ilowitt also mentions the occurrence of outlying masses of 
the coarse breccia-conglomerates of this series resting on older 
rocks iu various localities eastward of the Tambo, on the slopes of 
the Cobberas, and other localities; also a patch of nearly horizon- 
tally-bedded rocks, resembling those of Iguana Creek, in a deep 
valley at the sources of the Bern Liver eastward of the Snowy 
River. 
On the Wild Duck Creek, between Sandhurst and Ileathcote, is 
a patch of conglomerate resting in a basin on Silurian rocks. The 
age of this conglomerate, whether Upper Palaeozoic or Mesozoic, 
has not been determined, but Mr. Selwyn describes the chamcter 
and arrangement of the materials as being suggestive of a marine 
glacial action, t.e., that the fragments composing the conglomerates 
were conveyed from distant sources by icebergs. Other small 
patches of similar conglomerate occur iu various localities. 
