ROCK TEMPERATURES AT SYDNEY HARBOUR COLLIERY. 



217 



Strata. 



Thickness 



Depth from 

 Surface. 



Hard fine grained greenish sandstone, 



, 



a 



i 



„ 



micaceous 







H 



1,354 



10 



Greyish micaceous sandy shale 







l 



1,354 



11 



Fine grained sandstone with dark shaly 











streaks, micaceous 







10 



1,355 



9 



Bluish-grey micaceous sandy shale 







n 



1,355 



m 



Hard fine grained grey sandstone, micace- 











ous fragments of shale and garnets (?) 



3 



ii 



1,359 



n 



Alternate bands 2£" - 4£" thick of hard fine 











grained sandstone and bluish shale ... 



1 



n 



1,361 







Hard fine grained grey sandstone with thin 











carbonaceous streaks ... 



7 



7 



1,368 



7 



Dark grey sandy shale 







2 



1,368 



9 



Hard fine grained, light grey sandstone 











• (garnets) 



5 



11 



1,374 



8 



Dark grey sandy shale 







H 



1,374 



101 



Hard fine grained light grey micaceous 











sandstone 



2 



4 



1,377 



H 



Dark grey sandy shale 







H 



1,377 



6 



Hard fine grained light grey sandstone ... 







4 



1,377 



10 



Dark grey sandy shale 







% 



1,377 



101 



Hard fine grained light grey sandstone ... 







H 



1,378 



2 



Dark grey sandy shale 







oi 



1,378 



H 



Hard fine grained light grey sandstone . . . 







H 



1,378 



9 



Dark grey sandy shale 







3 



1,379 







Hard fine grained light grey sandstone ... 







7 



1,379 



7 



Dark grey sandy shale 







5 



1,380 







Hard fine grained light grey sandstone . . . 



2 



7 



1,392 



7 



Dark greenish-grey shale, with chocolate . . . 



1 



6 



1,394 



1 



Greenish-grey micaceous sandstone 



4 



8 



1,398 



9 



Micaceous sandy shale 







6 



1,399 



3 



Greenish sandstone, fine grained, micaceous 



3 



9 



1,403 







Bluish-grey micaceous shale 



1 



6 



1,404 



6 



Irregular fragments of bluish shale in grey 











micaceous sandstone ... 







10£ 



1,405 



H 



Light grey micaceous sandstone with in- 











cluded fragments of shale and red 











grains (garnets 1) 



1 







1,406 



H 



Dark bluish sandy shale ... 







n 



1,407 







Hard grey micaceous sandstone with pebbles 











of shale (included) 



2 







1,409 







Bluish-grey micaceous sandy shale 







8 



1,409 



8 



Bluish-grey micaceous shale with Equisetum 







1 



1,409 



9 



Bluish-green sandstone, fine grained, hard 



3 



7 



1,413 



4 



Bluish-grey micaceous sandy shale 







1 



1,413 



5 



