^ fig 1 



Sketch Section from near ARDR0SSAN,YORKES PENINSULA, to MURRAY BRIDGE. SOUTH-AUSTRALIA 

 showing the probable rp.lafion of the Lower Cambrian Rocks to the. Pre- Cambrian ? Rocks, which latter contain casts of Radiolaria at 



Crystal Brook and Brighton ^ ^ '' 



Mitchani , . . I 

 Probable Borizonnr" Lpfty o. 



CRYSTAL BRIIOK yi V rE 

 ^ RA"-' ^-- 



,1* J I've 



Orpbnan 



Pre - Cambrian?) Rocks 

 or Cambrian? J 

 ___ (POSSIBLE FAULT ('r>:rowing 2000" West) Scales 



^^^ J ss renderfsd hiphly probable tiy The sudden , ^ ,- , 



'M'S depression of tKei^-Cambril?rocl,s. as Longitudinal T-^ 

 i-f^dj, ^evidenced by the Croydon Bore . Vertical ■ ■ *? 



«oc,,|>V^| 



Figs 

 MAP shewing positions of chief localities where fossil Radiolaria 

 have been found m S.E.AUSTRALIA 



Ex planation 



® Devonian or 

 Siluro -Devonian 



Pre.- Cambrian ? 

 or Cambrian ? 



Fig 2 

 _^^ Showing probable Junction between the 

 ^Is Lower Cambrian and the Pre- Cambrian Rocks 

 ?,=^-^ near ARDROSSAN. Yorkes Peninsula. S. A. 



'° Mix;; i,^" 



Tiirrite.lla Aldinqse Beds 

 Eocene 



,,,i, / Pi e Cambi lan 

 1/,,E-y mi'ca qua'rn'i and ,' h-^^^^fM^]ii^^^m%%m 



■if'-f/z/ij/'/j J/ ni f I) J / / ]ri'^:z <.. ^ 



Scales of Feet 



'^^^■^// 



Longitudinal 

 Vertical 



