WEST RAIJGED REEF TO MINUDIE (3). LOGAN. 433 



Ft. In. 



Reddish gray argillaceous shale 1 



10. Coal and carbonaceous shale 8 



Gray argillaceous shale, with ironstone balls 



and stigniaruv ficoldes (^underclay) ^2 



Coal 2 



2 10 



Gray argillaceous sandstone, with stigmariw ficoldes 



{undcrclay) 2 



Reddish and green argillo-arenaceous shale, ironstone 

 balls. This has much the character of underclay, but 



the stigmarioe are. not well marked 12 



Gray sandstone 1 



Gray argillaceous shale, with ironstone balls 3 



Greenish gray sandstone 4 



Gray argillaceous shale 1 



(From the succeding layer of coal there springs up an 

 erect sigiUaria. It is 1 ft. in. in diameter, and 

 penetrates the shale and sandstone above it, five feet 

 of the plant being visible.) 



11. Coal 3 



Gray sandstone, with stigniarlce ficoides (underclay) . . 2 

 Gray argillaceous shale, with ironstone balls and stig- 



marice ficoides (^underclay) 5 



12. Black carbonaceous shale 9 



Coal 2 



11 



Gray argillaceous shale, with ironstone balls and stig- 



mariw ficoides (underclay) 1 6 



Greenish gray sandstone 1 6 



Gray argillaceous shale 9 



13. Coal 7 



Gray argillaceous shale, with ironstone balls and stig- 



marih ficoides (underclay) 2 



Grav argillaceous shale 5 



