508 The Upper Devonian Deposits of Maryland 



|i^° til 



Road N. 45° E. Altitude by barometer 1440 'ic|g| 2 5_^| 



Concealed. Ravine 10130 39.5 3343.5 



Concealed. Probably chiefly heavy sandstone which is in 

 fragments on hillside 9990 17 3304 



Road S. 70° E. Altitude by barometer 1410. Map altitude 1450 



Shale breaking irregularly and bands of flaggy green 

 sandstone. Dip 20° E 9930 172 3287 



Road N. 85° E. 

 Hackly and smooth shale. Dip 30° E • 9250 161.5 3111.5 



Road S. 70° E. 



Green shale breaking irregularly. Dip 17° E 9230 44 3053.5 



Concealed. On hillside occur loose Spirif<'r (Uelthyris) 

 mesascostalis cardinal angles extended 9110 23 3009.5 



Road N. 45° E. Altitude by barometer 1330 

 Green fissile shale 9050 41 2986.5 



Road N. 85° E. Map altitude 1400 

 Green fissile shale 8870 76 2945.5 



Road S. 80° E. Altitude by barometer 1310 



Hackly and smooth green shale 8670 102 2869.5 



Splintery and fissile shale. Dip 20° E 8430 42 2767.5 



Green fissile shale. A bed of sandstone and shale about 

 10 feet thick at base bears Camarotachia SP-, Spirifer (Dcl- 



thyris) ynesacostalis, 8. disjunctus 8330 17 2727.5 



Splintery shale. In a thin bed of sandstone at top oc- 

 cur Atrypa spinosa. Spirifer disjunctus. S. (Delthyris) 

 mesacostalis abundant 8290 21 2708.5 



Road S. 60° E. 

 Green fissile shale 8240 97 2681.5 



Road S. 5° E. Altitude by barometer 1250. Map altitude 1280 



Green shale breaking irregularly. Road to south 8000 29.5 2590.5 



Concealed 7820 11.5 2651 



