Tertiary Deijosits of the Aire and Gape Otway. 55 



graphical evidence only. Wilkinson says (5, p. 25) that: "it 

 occurs at intervals all round the Otway Coast Range, resting 

 on the flanks of it, and at greater elevations than the older 

 tertiary just described, though I have not observed it at a 

 greater altitude than about 1,000 feet above the sea. South 

 of the Dividing Range, we first meet with it at Point Bunbury, 

 Apollo Bay ; thence it continues westward to Moonlight Head, 

 capping, more or less, the intervening ranges from one to six 

 miles inland. From Moonlight Head it extends nearly as far 

 west as Warrnambool, resting unconformably on the miocene 

 (i.e., of the survey, H. and P. !) On the north side of the Coast 

 Range we have it, until it passes under the lava plains." He 

 then describes the variations in the deposit in diflferent localities, 

 and mentions a curious coarse conglomerate, which occurs about 

 ten miles up the Gellibrand, and which consists of granite, 

 porphyry, mica-schist, quartzite, and very little true quartz. As 

 far as is known there are no outcrops of ancient rocks in the 

 Otway Ranges which could yield a conglomerate of this nature, 

 in fact, its character as far as can be judged from this brief 

 description, is such as we should expect to tind in beds derived 

 from the widely spread palaeozoic glacial conglomerate of the 

 southern parts of Australia, a fact to which one of us has 

 previously drawn attention (20, p. 174). 



With regard to the dune rock and the sand dunes, Wilkinson's 

 descriptions are very full and accurate. He refers them to post 

 pliocene age in his report and section. Duncan (7, p. 291) 

 reproduces a part of this section, but in the legend omits the 

 words, "post pliocene;" after " /^ irregularly stratified yellow 

 calcareous sandstones;" moreover, " //. brown sand," should read 

 "blown sand." Wilkinson on page 23 of his report, speaks of 

 the dune rock as "more recent tertiary sandstone," evidently 

 regarding the post pliocene formation as a sub-division of the 

 tertiary, a point in which he is of course in agreement with 

 many recent geologists. In his letter to Aplin (4, p. 14), 

 in speaking of these beds, he says : " the bed of lignite is of 

 too limited extent to be of any economic value. It appears to 

 be of very recent tertiary age, and the thick deposit of irregu- 

 larly laminated calcareous sandstone which overlies it, I believe 

 to be consolidated blown sand." In his report (5, p. 24) he says: 



