Marylaxd Geological Survey 



487 



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Canal S. C0° E. 'gglgl I 



West end of tunnel 1835 



Center of syncline. Minor folds 1S13 



Somewhat hackly thin-bedded grayish-green arenaceous 



shale weathering brown 1S13 7.6 



Thin-bedded arenaceous grayish-green shale with oc- 

 casional thin beds of sandstone. A bed of sandstone 10 

 inches at top. N. 30° E. 50° E 1803 22.4 



Canal S. 20° E. 



Gray shale breaking irregularly with some occasional 

 thin beds of gray sandstone. N. 30° E. 45° E 1775 28.9 



■" 2.S 

 "o " c 



Pi 



1941 



1940 



1932 



1910 



Remainder of Section on Western Maryland Railroad. 



Railroad N. 60° E. 



Chiefly concealed. Arenaceous shale and interbedded 



sandstone in part 1725 



Bluish-green sandstone 1504 



Heavy bluish-green sandstone. A zone of fossils at lop 

 containing Spirifer (Delthyris) mesacostalis, Tropidolep- 

 tus carinatus abundant, Coleolus tenuicmctus abundant, 

 Bucanopsis mwra abundant, Bellerphon clarki, Cycloncmina 



vuiltistriata common, Loxonema ? glabrum abundant 1495 



Shale 1493 



Shale. Small zone fossils at top containing tipirifcr (Del- 

 thyris) mesacostalis, etc 1482 



Railroad N. 80° E. 



Chiefly shale 1470 



Massive sandstone with 6 inches of conglomerate at 

 base containing a few white pebbles. The conglomerate 

 very fossiliferous containing Camarotwchia congregata 

 var. parkheadensis, Spirifer (Delthyris) mesacostalis. Trop- 



idoleptus carinatus, gastropoda, etc 1435 



Chiefly shale. Some sandstone 1429 



Shale and sandstone. At top is a six-inch conglomer- 

 ate above which are 2 feet of shale, 18 inches of sand- 

 stone, 10 inches of shale and 1 foot of sandstone 1385 



Concealed in part. A band of fossils 4 inches thick at 

 top, underlain by 8 inches shale and 9 inches sandstone, 

 containing Camarotoechia congregata var. parkheadensis, 

 Spirifer (Delthyris) mesacostalis, etc 1301 



120.1 

 7.4 



1.6 

 9 



4.7 

 34.7 



1881 

 1761 



1753 



1752 



9.8 1743 



24.6 1733 



1708 

 1704 



61.3 1669 



12.5 1608 



