> 4 . 
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Government Canyon section 
- I 
t 
* . jr> 
Grass covered flat 
tr 
Thickness in feet. 
Fall River formation (approximately at 
Skull Creek contact) 
63. Partially obscured, fine-grained, thin- 
bedded sandstone with thin interbeds, 
gray shale. 3.0* 
62. Sandstone, fine-grained, thin-bedded, 
with numerous red-brown Fe-impreg- 
nated layers and vermicular concre- 
tionary Fe masses. 2. 0‘ 
61. Sandstone, fine-grained, chiefly massive, 
friable. Some zones platy to shaly sand- 
stone and silt stone in lower part; scattered 
thin Fe -impregnated layers. 12. 0* 
60. Shale, gray, silty; weathers brownish, 
with thin interbeds silt stone. Upper 
2. 0 feet chiefly siltstone beds with some 
silty shale and fine-grained sandstone 
interbeds. 8. O’ 
59. Sandstone, fine-grained, thin-bedded, 
white; few thin beds gray shale. 0. 7 ! 
0 . 6 * 
58. Ironstone, concretionary ledge, 
weathers purplish brown. 
