C • 3 Pah tri l ,y">7 
Cabin Creek Section 
Fall River formation ( in Fart ) 
31 . 
? 0 * 
Sandstone 5 fine-grained, thin— bedded to 
tabular, cross-laminated. Upper half 
contains shaly partings. Fe— impregnated 
layers, ripple -marked and ’’wormj’— tracked 
bedding surfaces. Lower part becomes 
siltv downward# 
Silts tone and fine-grained sandstone inter- 
laminated with black shale: laminae locally 
disrupted by "worn” -working. 
Shale , silty, dark gray, abundant carbon 
ized plant fragments, local ferruginous 
stain. Fresh water clams rare. 
31 . 
30 . 
1 . 9 * 
dis conformity 
