398 STANTON AND MARTIN — MESOZOIC SECTION ON COOK INLET 



continuous belt west of and parallel to the shore of Cook inlet at least 

 as far northward as Snug harbor. It also covers a large area on the 

 Alaska peninsula in the vicinity of Cold bay. The occurrence of Cado- 

 ceras wossnessenskii reported " near Katmai " by Grewingk indicates an- 

 other possible locality for the rocks of this formation in the Cold Bay area. 

 The following section shows the character of the formation at the type 

 locality, essentially as described in the paper just cited : 



Compiled detailed section of the Enochkin formation 



Zone D : Feet 

 Drab shale with numerous bands of limestone concretions filled with 

 well preserved specimens of various ammonoids, mostly Cadoceras 



and Belemnites, 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 with Cadoceras doroschini and a few other fossils 200 



Concealed 25 



Zone C : 



Sandy shales with many Belemnites and other fossils 50 



Concealed 20 



Soft shale. 20 



Dark drab shale with scattered fossils 33 



Hard calcareous shale full of fossils, principally Inoceramus, Pleuromya, 



and other pelecypods 2 



Black sand 1 



Dark shale 5 



Black sand 



Dark shale with many fossils 12 



Reddish limestone J 



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 containing Trigonia doroschini, etcetera. 50 



Concealed 



Zone A : 



Shale with one or more bands packed with fossils — Trigonia doroschini, 



T. devexa, etcetera — each fossil bed 10 to 25 inches thick 30 



Concealed 



Shale 12 



Coarse conglomerate 20 



Unconformity 



Greenish basalt 



Total 1,650 



