484 



The Upper Devoxiax Deposits of Marylaxd 



•a-^ k ~ S.5 



,— s^S o o " s 



n o ° •" ffi 31 



■fJ i- , . ^ o m (-3 



EC -2 bor ^ H < c ^ 



Gray arenaceous shale breaking irregularly 4014 10.3 3524 



Massive brown sandstone with some interbedded brown 



shale 4001.6 8.1 3514 



Massive reddish-brown sandstone 3991.6 6.5 3506 



Grayish-brown shale breaking irregularly 3983.6 28.8 3499 



Brownish red sandstone at the bottom, overlain by 

 gray sandstone. At the top a bed of fossils 1 foot thick 



containing Spirifer disjunctus, gastropods, crinoids 3948.6 10.6 3470 



Reddish-brown and green shale with occasional bed of 



thin-bedded sandstone 3935.6 8.1 3459 



Brown and green hackly shale, brown shale at bottom, 



green shale at top. N. 30° E. 65° E 3925,6 10.6 3452 



Massive brown sandstone 3912.6 4 3441 



Green arenaceous shale with occasional interbedded 



grayish-green sandstone 3907.6 6.2 3437 



Conglomeratic sandstone 9 inches of conglomerate at 



top 3900 12.2 3431 



Green shale breaking irregularly 3885 3.6 3418 



Heavy beds of grayish-green coarse-grained sandstone 



with some interbedded green shale 3880.9 10.5 3415 



Arenaceous green shale with very thin beds of green 



sandstone at the top. N. 30° E. 55° E 3868 9 3405 



Thin and heavy-bedded interbedded grayish-green fine- 

 grained sandstone 3857 37.7 3396 



Grayish-green arenaceous shale 3816 15.6 3358 



Gray sandstone, thin-bedded to about six inches thick, 

 sandstone near the middle almost coarse-grained con- 

 glomeratic 3799 9.2 3342 



Olive-green, somewhat fissile shale with occasional beds 



of sandstone. N. 30° E. 67° W 3789 65.3 3333 



Partly concealed. Mostly thin-bedded olive-green shale 

 weathering brown with some interbedded gray sandstones 



not more than 6 inches thick. N. 31° E. 65° E 3718 75.1 3268 



Grayish-green sandstone 3635 0.8 3193 



Grayish-brown arenaceous shale with thin beds of gray 



sandstone 3634 43.3 3192 



Heavy brown sandstone 3583.1 2.2 3149 



Olive-green shale with interbedded thin beds of flaggy 



green sandstone. N. 30° E. 60° E 3581.4 38.9 3146 



Fissile green shale with some brown fissile shale 3536.4 26.2 3107 



Gray flaggy sandstone with some interbedded green shale 3507.4 7.2 3081 

 Olive-green arenaceous shale with some thin beds of gray 

 sandstone at the bottom. N. 30° B. 65° E 3499.4 44.9 3074 



