SECTION OF NAKNEK FORMATION 405 



Feet 



Andesite tuff with abundant pebbles 60 



Shale 4 



Concealed (for 60 feet at 24 degrees dip) 24 



Sandy shale • 68 



Sandstone and shale 30 



Andesite 25 



Concealed (across cove for 800 feet at 25 degrees dip) 338 



Coarse gray sandstone, mostly heavy bedded qq 



Alternating bands of sandstone and shale 7 



Coarse gray sandstone 12 



Concealed 10 



Coarse gray sandstone 25 



Shaly sandstone 4 



Coarse gray sandstone 26 



Coarse gray sandstone with bands of fine conglomerate 5 



Coarse gray sandstone with thinner shaly bands 27 



Coarse gray sandstone with bands of fine conglomerate 162 



Fault? Displacement probably small. 



Coarse gray sandstone with bands of fine conglomerate 50 



Dark shaly sandstone 25 



Alternating bands of shaly sandstone and fine conglomerate 10 



Coarse gray sandstone with bands of fine conglomerate 12 



Dark shale 2 



Coarse gray sandstone and fine conglomerate 21 



Dark shale with Belemnites .... 40 



Coarse gray sandstone 25 



Dark shale with thinner bands of coarse gray sandstone 100 



Massive coarse gray sandstone 60 



Coarse gray sandstone with more shaly layers 125 



Covered except two or three small outcrops of shaly sandstone 425 



Dark shales with Belemnites . 160 



Cross-bedded coarse sandstone 30 



Dark shales and shaly sandstone with Aucella, etcetera 290 



Alternating bands of coarse gray and argillaceous fossiliferous sandstone. . . 100 



Coarse gray sandstone 20 



Thin bedded argillaceous sandstone in irregularly alternating lighter and 



darker bands . 338 



Coarse gray sandstone 30 



Banded argillaceous sandstone with Belemnites 300 



Coarse gray sandstone with Belemnites 40 



Banded argillaceous sandstone 56 



Coarse gray sandstone and fine conglomerate 35 



Banded argillaceous sandstone with several fossiliferous beds and a few thin 



bands of fine conglomerate 156 



Somewhat massive dark-gray argillaceous sandstone with a few thin yellow- 

 ish bands. 150 



Enochkin shales (see section on page 400). 



Total 5,139 



