Cretaceous Glaciation in Central Australia

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Abstract
In 1894, H. Y. L. Brown recorded in the part of his annual report (Geological Survey of South Australia; entitled ‘From Strangways to Mount Paisley’, p. 10, the following:— ‘Over all these stony downs and plains at intervals waterworn boulders, attaining often a considerable size, are thinly scattered on the surface. These are composed of quartzite, sandstone, quartz-felspar-porphyry, etc., all fragments of primary rocks which do not come to the surface anywhere in the neighbourhood. . . . The only theory which will account for their presence here, as well as in numerous other places where I have previously observed them, is that of their having been transported by drift-ice at the time when the central portion of Australia was under water.’ Various other references have been given in the bibliography quoted by the above-mentioned author, as well as by R. Lockhart Jack, Prof. Walter Howchin, L. K. Ward, and the present authors. One of us (W. G. W.) contributed a preliminary note on the occurrence of big erratics on the plains near the foot of the eastern escarpment of the Flinders Kange, at Muloowurtina, south-west of Lake Callabonna. Since then he has revisited the locality, which is situated in lat. 29° 58′ S., long. 139° 44′ E., about 370 miles north-north-east of Adelaide, and has been fortunate enough to obtain important palseontological evidence as to the age of the glaciation. The object of the present note is particularly to record these latest observations, in the light of recent conclusions

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