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24 • Siltstone, with interbeds fine-grained 
sandstone increasing downward* Lower 1,0* 
chiefly sandstone, 2*0’ 
23- Sands tone , chiefly fine to medium grained 
with local thin layers chsrrt and quartz 
pebble conglomerate in lower 5 1 ~10 * . 
Massive to thinly cross-bedded. Weathers 
gray-white with yellow stain to red brown. 34.0* 
22. Obscured by slump* Base of unit 23 above 
lies in this interval, 3*0 T 
21. Partially obscured. Upper 5’ a soft gray 
claystone weathering to lumpy crust. 10.5’ 
20, Claystone slightly sandy, gray, weathers 
light gray, some scattered coarse grains 
chert and quarts, 4,2* 
19* Sandstone, clayey and sandy claystone; con- 
glomeratic. Coarse grains and granules 
chert and quarts. Some white claystone 
fragments in upper . 3 '-may he porcelanitic. 
Polished chert quarts pebbles in float* l.C 1 . 
