«9i3.] STRATIGRAPHY OF PACIFIC COAST OF AMERICA. 605 



fauna of the beds on the Cowlitz River below the mouth of Drew 

 Creek is identical with that at Chehalis and Centralia in the lower 

 Tejon (Chehalis formation). 



Lincoln Creek formation ; this is very vaguely defined. The 

 area shown on the map comprises two different things, Chehalis 

 beds underlying the basalts of the Balch syncline, and a conform- 

 able sequence of a late phase of the San Lorenzo formation and an 

 early phase of the Seattle. The fauna listed appears to have come 

 from the basal San Lorenzo beds at Oakville about fifteen miles 

 away. The equivalent beds of Sinclair Inlet are apparently lower 

 San Lorenzo, and those of the Cape Flattery section, like most of 

 the rocks on the west coast of the Olympic Peninsula mapped by 

 Weaver as Lower Miocene, are Cretaceous. 



" Tejon formation." The exact use of this formation name in 

 Washington is uncertain. The fauna listed appears to have come 

 from the Olequa beds near Little Falls and on Coal Creek above 

 Stella. If the term Tejon is used in the broad sense that it is 

 by the writers then the reasons for separating the Cowlitz formation 

 which contains a fauna much more closely allied to that at Fort 

 Tejon in California are not apparent. If it is used in a restricted 

 sense for the Olequa beds then it is obviously misapplied. 



Blakely formation ; this name seems to be intended to cover all 

 the Oligocene-Lower Miocene deposits of the Puget Sound and 

 north coast of Washington. The type-section on Bainbridge Island 

 is the exact equivalent of the Astoria Series as recognized by the 

 writers. 



Wahkiakum formation ; the Oligocene-Lower Miocene of south- 

 western Washington. The type-section is Monterey sandstone but 

 many of the fossils listed came from the Astoria beds on Skamo- 

 kawa and Grays Rivers. 



Chehalis formation ; the type section is Monterey and Empire, 

 and the fossils listed a mixture of the shale faunas of the two. 



Montesano formation; apparently intended as a local name for 

 the Empire sandstone. 



