42 PETROLEUM OF PACIFIC COAST OF ALASKA. [bull. 250. 
Compiled detailed section of the Enochkih formation. 
Zone D : Feet. 
Dark-drab shale, with numerous bands of limestone concretions filled 
with well-preserved specimens of various cephalopods and belem- 
nites and with occasional sticks of fossilized wood 146 
Concealed by talus (all shale as above), thickness computed 77 
Shales as above, with same concretions and wood 196 
Limestone 1 
Shales as above 363 
Shales (partly concealed by talus), thickness computed 300 
Shales as above 200 
Concealed 25 + 
Zone C : 
Sandy shales with many fossils 50 
Concealed 20 I 
Soft shale 20 
Dark-drab shale with scattered fossils 33 
Hard calcareous shale full of fossils, principally pelecypods 2 
Black sand 1 
Dark shale 5 
Black sand 1 
Dark shale with many fossils 12 
Reddish limestone 
Dark shale with many fossils 14 
Dark shale with scattered fossils 62 
Dark soft sandstone with streaks of conglomerate 10 
Concealed 
Zone B : 
Shale with several fossil bands 50 
Concealed 
Zone A : 
Shale with one or more bands packed with fossils, each fossil bed 10 
to 25 inches thick 30 
Concealed 
Shale 12 
Coarse conglomerate 20 
Unconformity 
Greenish basalt 
The following section was measured at Oil Bay. It is the opinio 
of the writer that the lower 1,294 feet represent the upper pai 
(zone D) of the Enochkin formation: 
