Section at Whitehall,N.Y., below lower lock of canal. 
V' ‘ Ft. in. 
1. Massive bedded,compact,dark steel-gray sandstone,almost 
a quartzite.,.. 25 
2. Dark clay, shale,. 
3. Bluish-gray brecciated limestone, . 
4. Fine-grained,compact,steel-gray limestone, . 1 
5. Compact arenaceous limestone, 
• • « t 
6 . 
6 
6 
Compact,fine-grained,steel-gray sandstone,in layers of 
6in.to 3 feet. Partings of coarseer sandstone and 
smal 1.flattened clay concretions o*ccur,also,streaks of 
light-colored sandstone in the layers, and cross-bedding 
is of comnon occurrence,... 
. Annelid trails on the surface of some of the layers. 14 5 
Strike,N.20° E. ; dip,6° to 8° E. 
7. Calciferous sandstone in one layer, .. 2 7 
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8. Fine-grained.compact,steel-gray sandstone, . 20. 
9. Thin bedded sandstone and clay shale, .......... 1 3 
• *,* * ' * - 
10. Compact gray and purplish fine-grained sandstone, 
streaked with dar^sandstone and shaly matter; 
slightly calcareous in places, . ..... 16 6 
•7?^“~d# • - #*c • 
11. Dark-gray calciferous layers,weathering to a reddish- 
brown sandstone. Annelid trails and borings,. ... 2 
12. Gray compact sandstone,. • . 1 3 
13. Dark-gray calciferous layers,weathering to a reddish- 
brown sandstone. Annelid trails and borings, .... 1 4 
