KOCK TEMPERATURES AT SYDNEY HARBOUR COLLIERY. 



213 



Strata. 



Thickness 



Depth from 

 Surface. 



Coarse grained white sandstone ... 



Dark blue shale (6" - 12" thick) ... 



Fine grained white sandstone with micace- 

 ous bands 



Fine grained white sandstone with shaly 

 partings, becoming more frequent 



Hard white sandstone 



Two bands of dark blue shale with sand 

 stone parting ... 



Hard white sandstone 



Dark blue shale with sandstone partings . . 



Hard fine grained sandstone with shaly 

 streaks... 



Dark blue shale 



Coarse white sandstone with thin bands of 

 micaceous shale 



Dark blue shale with thin sandstone bands 

 very hard, varying from 3" - 5" thick 

 (At 825' 830' and 835' bands of hard 

 white sandstone). Bottom of this bed 

 dipping N.N.E. about 1 in 16 



Hard white sandstone with current bed- 

 ding strongly developed, very friable... 



Dark blue shale with thin bands of dark 

 sandstone (At 888' impression oiEqui- 

 setum or Zeugophyllites in grey shales ; 

 890' fine grained sandstone ... 



Sandy shale with dark shale bands (At 919' 

 thin parting with calcite crystals, 925' 

 hard fine grained sandstone bands, 930' 

 dark shale with abundant Equisetum, 

 932' band of brownish-black shale) ... 



Hard white sandstone with nodules of shale 



Dark blue shale with thin sandstone bands 

 (975' dark shale with Alelhopteris? 980' 

 dark shale with Thinnfeldia? 986' 

 calcite, 992' concretionary markings)... 



Light greyish shale... 



Dark blue shale, plants Thinnfeldia^ Equi- 

 setum, &c, (1,000' coalpipes)... 



Light grey shale (1,010' 10" band of very 



hard grey sandstone 1,022' 7" coalpipes 



[In this bed were found Thinnfeldia odontop 



teroides, Morris ; T. narrabeenensis, nov. sp.; Ale 



thopteris, nov. sp.; Tceniopteris, nov. sp.; Equisetum, 



Fructification (cf. Sphcereda and Beania) — all of 



Triassic Age.] 



13 6 

 1 



4 2 



14 5 



13 10 



1 



6 



5 4 



1 

 4 9 



14 5 



47 10 

 38 9 



9 10 



733 4 



734 4 



738 6 



752 11 

 766 9 



767 

 768 

 773 



774 

 779 



793 9 



841 7 



880 4 



890 2 



63 



8 



953 



10 



10 







963 



4 



30 







993 



10 



4 



6 



998 



4 



6 



3 



1,004 



7 



20 



2 



1,024 



9 



