252 



C. A. SUSSMILCH. 



There is an interesting occurrence of these coal measures 

 on Portion 81 close to the junction of the Oopeland and 

 Bowman River roads. Here, where they have been 

 brought into direct contact with the middle part of the 

 Burindi Series by faulting, they appear to dip under the 

 Burindi Beds. 



I. Age of the Coal Measures. — These coal measures con- 

 tain an abundance of the fossil plant Glossopteris: they are 

 obviously, therefore, of Permo-Oarboniferous age. The 

 composition of the coal given in the above analysis is very 

 like that of the Borehole Seam in the Newcastle Coal 

 Measures. The grits and conglomerates associated with 

 the coal measures are very like those of Fassifern, in the 

 Newcastle District. These facts, taken into conjunction 

 with the thickness of the strata (1,000 feet or more), would 

 indicate that these coal measures belong to the Upper or 

 Newcastle Goal Measures, rather than with the Lower or 

 Greta Coal Measures. This basin would appear to be a 

 continuation of that shown by Prof. Sir Edgeworth David 

 to extend northward from the Hunter River District 

 towards Stroud. The two basins were, no doubt, at one 

 time continuous, but have been isolated by folding and 

 subsequent denudation. 



II. Stratigraphical relation to the Kuttung Series: — If 

 the above conclusion that the Gloucester Coal Measures 

 are the equivalent of the Newcastle or Upper Coal Measures 

 is correct, then the whole of the remaining subdivisions of 

 of the Permo-Carboniferous formations totalling upwards 

 of 10,000 feet are missing in the Gloucester District. If, 

 however, it should be that they are the equivalent of the 

 Greta or Lower Coal Measures, then only the Lower Marine 

 Series would be missing, these latter in the Hunter River 

 District are 4,600 feet in thickness. In either case, there- 

 fore, a thick series of strata is missing from between the 



