
TINDALE—SUBDIVISION OF PLEISTOCENE 639 
side of Baker Range may have been deposited at a somewhat higher level, not 
exceeding 140 feet and probably lower than that figure. 
Between Crower and the vicinity of Tanlanoola the East Avenue Terrate has 
not been traced in the field. From maps and survey data it appears to ecoutinue its 
north-south trend until it strikes the Mt. Burr Range. Tr the north-west of the 
Hundred of Riddoch evidently it is eut through by the waters of both the Reedy 
and Avenue Creeks, here flowing relatively close together, although their 
immediately lower courses draw widely apart. 
At Mr. Burr Range this year, R. A. Keble and the writer ran two sections, and 
observed marine platforms, cut in Miocene polyzoal limestone, and strewn with 
flint boulders, at several elevations, indicating ou the seaward front of this range, 
the presence of more than one terrace earlier than that identified as Reedy Terrace 
itself, The data obtained is of sufficient interest to warrant further field work, 
aud it may then be separately published, Suffice to say, that at the Collapsed Cave 
(Section 123, Hundred of Tindmarsh) shore deposits, including a flint boulder 
beach, were cneountered between the limits of 120 and 140 feet (37-43 metres) 
above sea level (as measured by aneroid froma drainage survey datum of 62 feet at. 
Snuggery). This may represent the local expression of Bast Avenue Terrace. 
Higher up on the range at the north-east eorner of Seetion 272, was a marine 
terrace at 148 feet (44 metres) also cut in Miocene polyzoal limestone, on which 
were water-laid shore deposits, in situ, up to 30 feet (9 metres) in thickness. 
These contained a typical reef shell association which ineluded Turbo undulatus, 
Brachyodontes erosus and Nerita, This could represent the Baker Ranye phase 
of the Cave Terrace, but may be older. 
In the Murray Valley positive identification of the Hast Avenue Terrace has 
not been made. It may be significant that as shown in fig. 1, at Seetion 174, 
Hundred of Burdett, there is a disconformity at 105 feet (32 metres) above local 
river level, with a basal bed containing boulders of Miocene limestone, over-laid 
by a thin marine hed with shell fragments (not identifiable). This was followed 
by a thick dune sand series. These may represent the East Avenue Terrace. The 
close correspondence of the altitude with that suggested for East Avenue Terrace 
in the South Kast is worthy of note. 
CAVE TERRACE. 
Cave Terrace in the South East is a relatively narrow belt of shore deposits 
one to two miles in width, placed usually ouly one or two miles inland from the 
landward side of the earliest East Avenue Terrace deposits, 
The limestone dunes of this series have been worn down to relative stumps by 
erosion and are much consolidated by redeposition of lime. Extensive and complex 
