Maryland Geological Survey 503 



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Dark bluish sandstone 2143.5 7.6 1713 



Green fissile shale, bands of dark-blue sandstone. In a 

 band of bluish sandstone 10 feet from bottom of unit 

 (1686.8 vertically) occur Camarotoechia congregata var. 

 parkheadensis ahunaant. N. 24° E. 73° E 2135.5 28.5 1706 



Green fissile shale 2105.5 35 1677 



Dark bluish sandstone and interbedded shale containing 

 near the top Caviarotwchia congregata var. parkheadensis 

 common, Tropidoleptus carinatu^, Cypricardella belUstriata, 

 C. gregaria var., Liopteria Mgsbyi ? 2066.5 10 1632 



Green fissile shale and an occasional band of bluish 

 sandstone. Dip 65° E 2055.5 102 1632 



Green fissile shale and an occasional band of bluish 

 sandstone. Dip 72° E 1941.5 180 1530 



Green fissile shale carrying at top in a thin band of 

 bluish sandstone Spirifer (Delthyris) mesacostalis, Tropi- 

 doleptus carinatus. N. 25° E. 59° E 1751.5 38 1350 



Dark bluish sandstone with shale partings containing 

 at top Camarotoschia congregata var. parkheadensis abun- 

 dant, C. eximia, Liopteria bigsbyi ?, Paleoneilo cf. maxima. 1707.5 6.5 1312 



Fissile green shale and sandstone 1699.5 23.5 1306 



Fissile green shale and thin-bedded sandstone containing 

 at top in a band of sandstone Camarotachia congregata var. 

 parkheadensis, Tropidoleptus carinatus, Cypricardella gre- 

 garia var., Palaoneilo cf. maxima. N. 27° E. 57° E 1671.5 31 1282 



Dark bluish sandstone 1633.5 1.6 1251 



Woodmont Shale Member 



Fissile green shale with interbedded sandstone 1631.5 32 1250 



Hard green sandstone and fissile green shale 1592.5 18.5 1218 



Green fissile shale and bands of hard green and blue 



sandstone. N. 32° E. 57° E 1569.5 72.5 1199 



Fissile green shale 1482.5 43 1127 



Green shale breaking irregularly with thin bands of 



green and hard blue sandstone. N. 29° E. 58° E 1431.5 35 1084 



Fissile green shale with bands of hard green and blue 



sandstone. N. 32° E. 65° E 1390.5 90.5 1049 



Stream N. 70° W. 



Concealed 1290.5 212 958 



Shale breaking irregularly and concretionary sandstone. 

 N. 25° E. 59° E 1040.5 23.7 746 



