I9I3.] STRATIGRAPHY OF PACIFIC COAST OF AMERICA. 573 



Locality 32; sandstone and shale, seacliffs between mouth of Big Creek 

 and Cape Gregory, Coos Bay, Oregon. (H. Hannibal.) 



Locality 33; sandstone and shale, seacliffs at Mussel Reef between Coos 

 Head and Cape Gregory, Coos Bay, Oregon. (H. Hannibal.) 



Locality 40; sandstone, one fourth of a mile below top of grade north 

 of Five-mile Creek, Bandon, Oregon. (H. Hannibal.) 



Locality 99; tuffaceous sandstone, bluffs along Little River at junction 

 with north fork of Umpqua River, Glide, Oregon. (H. Hannibal.) 



Locality 116; basalt tuff, seacliffs between pier and Point Crescent, Port 

 Crescent, Washington. (H. Hannibal.) 



Locality 154; basalt tuffs, seacliffs immediately southwest of Tongue 

 Point, Port Crescent, Washington. (H. Hannibal.) 



On the north coast of Washington the senior author-** has termed 

 a series of coarse heavy-bedded basalt tuffs with intercalated flows 

 and a minor element of sandstone the Crescent formation. Collec- 

 tions of fossils from the tuff and sandstone obtained by the junior 

 author in 191 2 indicate that this formation is the stratigraphic 

 equivalent of the Arago. 



The Benton County hills a mile north of Granger, Oregon, 

 Mary's Peak near Philomath, the Willamette River above Spring- 

 field, and the north • Santiam River between Lyons and Kingston 

 have yielded excellent plant remains pertaining to this horizon, usu- 

 ally in a white or pink rhyolite tuff intercalated with the basalts. 

 Knowlton-^ has also described plants from a locality in the Arago 

 near Comstock in Douglas County and another on Coal Creek in 

 Lane County. Several near Ashland may represent the same horizon. 



The following fauna was obtained from the type section south 

 of Coos Bay and from points on the Umpqua River, Oregon, and 

 the north coast of Washington. 



Oligocene Deposits — the Status of the Oligocene of the 

 Pacific Coast. 



LTntil a comparatively few years ago the tertiary of the Pacific 

 Coast was classified on a three-fold basis — Eocene, Miocene and 

 Pliocene, and the term Oligocene was a vague indefinite division 



20 Arnold, R., Bull. Geol. Soc. Am., XVII., 1906, p. 460. 



21 20th Ann. Rept. U. S. Geol. Sur., Pt. HI., 1900, pp. 37-64, PI. I.-V.; 

 Bull. 204, U. S. Geol. Sur., 1902, p. iii. 



