THE GEOLOGICAL STRUCTURE OF THE CANONBIE COALFIELD. 



S51 



recall the assemblage of organic remains so characteristic of the Lower Limestone 

 group of the Edge Coal series (Hurlet and Hosies) of central Scotland. 



The massive character of the limestones towards the top of the Lower Limestone 

 group has been proved in the Catsbit bore (see sketch map, Plate I.), sunk close to the 

 farmhouse of Catsbit, about three-quarters of a mile E.N.E. of Rowanburn Colliery, 

 where seventy-five feet of limestone with few intercalations of sediment were pierced 

 beneath the Kilnholm coals. A copy of the journal of this bore is given below. 



Section of Strata in Bore (by Diamond Drill Process) at Catsbit. 



commenced december 1891. 



Description of strata : 



Fms. 



Ft. 



Ins. 



Description of strata : 







Fms. 



Ft. 



Ins 



Surface soil 







2 







Brought forward 24 



4 



5 



Soft red clay 



2 











Dark gray fakes . 







4 







Boulders and clay 



4 



3 



10 



Fakes and blaes . 











f> 







Yellow sandstone 



2 



2 



6 



White sandstone 







6 



3 



8 



Yellow sandstone with coal strain 



s 



1 



6 



White sandstone with 



coal s 



itrain 



3 



2 







White sandstone 







1 



6 



Dark gray fakes 











4 







"White sandstone 







1 



11 



Fakes and sandstone 







1 



2 







White sandstone with coal strains 



5 1 



2 







Dark blaes . 















6 



Yellow sandstone 



1 



2 







White sandstone 











4 



G 



Broken sandstone (cuttry) . 







2 



3 



Gray fakes 











1 







Space vacant 







2 







Y r ellow sandstone 







4 



1 



C 



Yellow sandstone 







5 







Coarse sandstone and 



coal s 



trains 







3 







Coal, soft and loose . 











4 



Fakes and blaes . 







1 



2 



6 



Fine white sandstone . 







4 



5 



Coarse sandstone 











1 



9 



Yellow sandstone 







5 



3 



Inferior limestone 











1 



4 



Gray fakes 







1 



6 



Gray sandstone . 







1 







2 



Blue blaes .... 







3 







Fakes and blaes . 







1 











Sandstone white 







5 



8 



Coal (loose) 











1 







Gray fakes 







2 



6 



Sandstone, white 







1 



3 



2 



Blue blaes .... 







1 



6 



Fakes and sandstone 











2 



6 



Soft blaes and fireclay 











6 



Blue blaes . 











5 



6 



Blaes and coal 











4 



Dark fakes 











5 



8 



Coal 







1 



11 



Coal . 















7 



Gray fakes 











6 



Sandstone, white 











3 







Hard white sandstone 







3 



2 



( !ray fakes 











4 







Blue fakes and blaes . 







2 







Fakes and blaes . 











5 







Blue blaes and balls . 







3 



2 



Gray fakes . 











5 



6 



Coal 











5 



Fakes and coal strains 















4 



Light fakes 











6 



Gray fakes . 











2 



6 



Fakes and sandstone . 







2 



3 



Sandstone, gray . 







1 



1 







Blue blaes .... 







2 



9 



Blue blaes . 











4 



5 



Coarse parrot coal 







1 



3 



White sandstone 











5 







Dark blaes 







1 



2 



Fakes and sandstone . 











3 



3 



Coal and sulphur 











4 



Gray sandstone . 











3 







Coal 











8 



White sandstone 







1 



2 



3 



Dark gray fakes 







2 







Gray sandstone . 







1 







9 



Light fireclay . 







1 



2 



White sandstone 







3 



3 



5 



Light fireclay and ironstone ball 







4 



8 



Coal (soft) . 















4 



Blue fakes 







2 



9 



Fakes and blaes . 















8 



Soft blaes . . . . . 











9 



White sandstone 







3 



5 



6 



Fakes and sandstone . 







1 



6 



Dark fakes and coal strains 











4 



White sandstone cuttry 







4 







Coarse white sandstone 



1 



3 



6 



Carry forwarc 



24 



4 



5 



Carry forwarc 



67 



5 



6 



TRANS. ROY. SOC. EDIN., V< 



3L. XL. 



PART IV. 



(NO. 32). 









6l 





