INAUGURAL ADDRESS. 59* 



River Clarence 

 Area. 



Coal Series at 

 Dubbo 



LOWER MESOZOIC. 

 (a) Neio South Wales, 



Component Formations. Sydney Area. 



( Narrabeen or Chocolate 

 I.Clarence Series .. < Shale 



I Estheria Shales 



iWianamatta Shales 

 Hawkesbury or Sydney 

 Sandstone 



I. CLARENCE SERIES. 



185"2. Stutchbury (Geol. Surv. Report) describes the coal- 

 bearing beds at Dubbo, which were by him, as well as by Clarke 

 (Geol. Surv. Report, No. 8, p. 7, 1853), referred to as Carboni- 

 ferous. 



1875. Wilkinson (Philadelphia Exhib. Essays, p. 125) 

 suggested that the Clarence River coal-bearing shales are the 

 equivalents of the Mesozoie coal strata of Victoria, and that they 

 are a long way above the Newcastle coal beds. 



1880. Wilkinson (Depart. Mines for 1879, p. 216) places the 

 Clarence Series superior to the Wiananiatta shales, and as belong- 

 ing to Jurassic. Pittnian expresses the same view (Dejjt. Mines 

 for 1880, p. 244). 



1883. Tenison Woods, Rev. J. E. (Proc. Lin. Soc, N.S.W., 

 vol. viii., pp. 53 and 54), places the plant beds at Ballinore, near 

 Dubbo, as Rhaetic or Lower Lias, and those at the Clarence River 

 as Jurassic. 



1885. Curran, Rev. J. Milne, places the Clarence Series, on 

 the evidence of the plant-remains, between the Upper Coal 

 Measures and the Hawkesbury sandstone (Proc. Lin. Soc, N S.W.) 



1886. Wilkinson and David (Department of Mines for 

 N. S.W. for 1885, p. 130) discovered fossil plants in the Narrabeen 

 shales, and correlated them and the Estheria shales with the 

 Clarence Series. 



1890. Wilkinson, C. E. (Pal. Memoir, No. 3, Depart. Mines 

 N.S.W., p. 41, 1890), discovered that the coal-bearing series of 

 the Clarence River district underlay the Hawkesbury formation. 



II. hawkesbury series. 



1810. Bailly, in Peron's " Voy. Terres Aust.," describes the 

 Sydney sandstone and Parramatta [Wianamatta] shales. 



1825. Lesson (" Voy. La Coquille^') referred the Sydney sand- 

 stone to Tertiary, and noted its superposition to the Coal Measures. 



