262 



T. W. EDGEWOKTH DAVID. 



coal-measures are probably the equivalents of the Upper Marine 

 Series, the Greta measures, and Lower Marine Series having 

 thinned out under the overlapping beds of the Upper Marine 

 Series, against an unconformable surface of Silurian and Devonian 

 rock. It may be of interest to give here for the sake of compari- 

 son, a section of the Bowen River Coal-field, which I have compiled 

 from the able and elaborate Report on that field by Mr. R. L. 

 Jack, and side by side I have ventured to place the probable 

 equivalents in New South Wales of the different divisions of this 

 typical Queensland Coal-field. The following is the approximate 

 section, the strata being given in descending order : — - 



Hunter River Thickness Bowen River Coal-field. 



Coal-field. Feet In. 



— — Beds containing silicified wood. 



— — Marine grey and ferruginous sandstones of 

 E/Osella Creek, containing : — Streptorhyncus 

 crenistria, Productus cora, Productus scabriculus^ 

 Spirifer sp., Goniatites Woodsii. 



400 (about) Grey sandstones with silicified trees. 



10 6 Havilah Coal Seam, burnt by white trap. 



30 Dark grey shales and sandstone with trees show-, 

 ing thirty annual rings of growth, bluish grey 

 shales with plants, lenticular coal and iron- 

 stone nodules. 



— — Gap. 



150 (about) Bluish cross-bedded sandstone weather- 

 ing spheroidally, full of carbonised and silici- 

 fied plants, including coniferous trees. Large 

 unrounded boulders of metamorphic rock occur 

 sporadically throughout these strata. 



10 Dolerite sheet. 



60 Grey shales and finely laminated sandstone. 



— — Gap. 

 20 Mc Arthur Coal Seam and Dolerite. 



3 6 Coal, burnt. 



2 1 Blue shale. 

 3 (?) Coal, burnt. 

 3 Black clay. 



3 Coal, burnt. 

 Ferruginous shale crowded with Glossopteris. 



— — Gap, sheets of Dolerite. 

 200 (about) Dolerite. 



23 8+Blue shales with thin coals and ironstones. 

 100 (about) Gap. Brown sandstone. 



Dolerite. 



Brown sandstone. 

 Dolerite. 

 Thin coal and bituminous shale- 



Newcastle 

 and Tomago *{ 

 Series. 



4 



Dolerite. 



3 



Coal burnt. 



— 



— Gap. 



25 



Dolerite. 



10 



Gap. 



14 



11 Daintree Coal Seam 



