306 C. A. SUSSMILCH AND T. W. E. DAVID. 



may be given at the Irwin River district near Nangetty 

 Station (see Plate XXX, Section 4). 



Jurassic — 



Strata, horizontal mostly freshwater ferruginous sand- 

 stones with occasional marine invasionsbringinginTrigonia. 

 Slight unconformity, limonite springs break out along this 

 line. 



Lower Permian or Permo-Carboniferous — 



50 feet (or so) shales and sandstones with dumped blocks 



up to 18 inches in diameter. 

 5 feet coal seam with Glossopteris. 

 70 feet (?) brown clays. 



2 feet coal seam with a few feet of clayey strata below. 

 60 feet brown clay. 



3 feet (about) coal and shale. 



Uralian ? in part (thicknesses very approximate) — 

 30 feet (more or less) marine olive-green to grey mudstones 

 and limestone with Strophalosia and abundant other 

 brachiopods, beautifully preserved, the shells having 

 a strikingly fresh and recent appearance. 

 1500 feet gypseous clays and shales. 

 10 feet Gastrioceras Jacksoni horizon. 

 750 feet shales, unfossiliferous. 

 100 feet tillite with Keenia at base associated with the 



boulders. 

 90 feet olive green mudstone. 



150 feet tillite with large erratics up to over 50 tons in 

 weight. 



Carboniferous? (possibly Middle or Lower Oarboniferous)- 

 Dark grey clays. 



Pre-Cambrian — 

 Gneiss, etc. 



