146 



the face of the clift'; and at a distance of about a quarter to half 

 a mile from the previous sections fossils of a Miocene type were 

 found in the yellow compact bed above the Eocene. The most 

 prominent of these fossils were Spondylus arenicola (characteristic 

 of the Miocene of Aldinga), Pecten antiaustralis, P. suh-hifrons, 

 P. palmipes. 



At Wool Bay, to the north of Edithburgh, the Eocene is 

 capped directly by beds of travertine, and the cliffs are here 

 about 60 feet high. 



Almost immediately southwards, however, a band of clay of a 

 sticky nature when moist, and red in color, makes its appearance. 

 An artificial section gave — 



Feet. 

 Recent travertine ... ... 13 



Red-compact clay ... ... 15 



Polyzoal limestone ... ... — 



Travelling southwards, the Eocene becomes more arenaceous 

 and of a finer nature, showing two distinct beds, the lower being, 

 a pink, compact, crystalline polyzoal limestone, while the upper 

 is yellow in color and much softer. 



The following section was taken about two miles south of WooK 



Bay : — 



Travertine and soil 



Variegated arenaceous clay (unfossiliferous) 



Oyster band consisting, as at Aldinga, of Ostrea arenicola 



White limestone 



Eocene limestone 

 The top of the Eocene limestone, greatly eroded, has a mean 

 altitude of about six feet above sea level, and is covered uncon- 

 formably by the white limestone, which contains fossils charac- 

 teristic of Miocene beds — Ostrea arenicola and Pecten anti- 

 australis^ in company with Tellina, Cardita, Diastotna, and 

 Chione being abundant. 



The variegated arenaceous clay of this section is quite different 

 in physical features from tlie red sticky clay of the Wool Bay 

 section described above. 



Leaving the coast and travelling westwards to a point distant 

 one and a-quarter miles from Edithburgh, a well section indicates 

 the age of the unfossiliferous clay bed of the section taken two 



miles south of Wool Bay — 



Feet. 



Black soil ... ... ••• ••• ••• 1- 



Rubbly limestone (fossiliferous) 1^ 



Variegated arenaceous clay (unfossiliferous) 11*'' 



White rubbly limestone (fossiliferous) ... 2 



Yellow sandstone (fossiliferous) 2 



Hard compact limestone. 



