RELATIONSHIPS OF THE AUSTRALIAN CAINOZOIC SYSTEM. 
in the Sorrento Bore, so we may conclude that that area was outside 
the influence of fluviatile conditions of the continental seaboard of 
that time. As regards Kitson’s reference to these leaf beds as 
resembling those of “the Otway Coast, it is interesting to note that one 
specimen collected by Mr. J. 8. Green is practically identical with 
branchlets of a Casuarina from Sentinel Rock.* 
The exact relationship of the basalt to the Balcombian blue 
clays in the Mornington district appears to be obscured by shipping 
and faulting ; but at Grice’s Creek, Drs. Hall and Pritchard mention 
that these clays are “succeeded by basalt, which occupies the bed of 
the stream for nearly a chain, and over which the ascent is steep.” 
In the Table of Rock-Succession, however, the same authorst place 
the basalt below the blue and grey clays, and above the lignitic 
beds ; and in another place§ mention the occurrence of grits and 
conglomerates (lignitic) as “ passing under a small mass of basalt 
which shows well-developed tabular jointing.” This basalt is not 
seen intercalated between the clays and lignites in the cliff section 
at Balcombe Bay. Hall and Pritchard offer two possible explana- 
tions of this problem. Either a narrow stream of lava flowed down 
an eroded valley, cutting through the upper sandy beds till the 
ferrugincys Sand 25 fr 
Fossiliferovs ironstone Gu. 
ferruginous Sand Zofr 
- Older GLasalt 15 ft 
Gran 
Sea level 
Fig. 3. SECTION AT LANDSLIP Point, FRANIKSTON (S Sine). 
lignitic series was reached, or a sheet of basalt was laid down upon 
the lignitic series, and subsequently partially removed by denudation 
before the deposition of the overlying sandy beds. 
* Cf. Ettingshausen. Callitris prisca, from Vegetable Creek, N.S. Wales, in Mem. Geol 
Surv. N.S. Wales, Pal. No. 2, 1888, p. 95, pl. viii., figs. 3, 4. 
+ Proc. Roy. Soe. Vict., vol. xiv., pt. 1, 1901, p. 37. 
{ Loc. cit., p. 41. 
§ Loc. cit., p. 40. 
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