147 



or even to the formation of a rift-valley with infilled 

 material. (16) 



This present series affords data which help one to divide 

 the Miocene (Janjukian) beds of both the old Murray and 

 the Sp€nc«r Gulfs into three sections, as exemplified here and 

 in the Victorian bores of the mallee area : — 



(3) Glauconitic bed, yellow clays and sands. 



(2) Polyzoal rock, or grey to whitish calcareous sand, 



passing downwards int-o a pyritous and quartzose 



deposit, with marine fossils. 



(1) Carbonaceous beds with lignite. 



For the present we may regard these as equivalent to the 

 Upper, Middle, and Lower Miocene, respectively, although 

 their limits are not clearly marked. 



It is interesting to note here that the order of the Beds 

 2 and 3 are reversed, as far as lithology goes, at Torquay 

 (Spring Creek beds) ; but it must also be borne in mind that 

 the molluscan facies from the two glauconitic series would 

 assuredly differ. 



(16) Chapman, F. : Rec. Geol. Siirv. Vict., vol. iii., pt. 4, 

 1916, p. 407. 



