604 ARNOLD AND HANNIBAL— MARINE TERTIARY [April 19, 



sidered. To this horizon are referred the lower 475 feet of the 

 Cape Blanco beds. The upper 75 feet, argillaceous sands with some 

 calcareous nodules, are unconformable on the Empire beds and 

 form the base of the Elk River Formation, here referred to the 

 Upper Pliocene. 



Willis and Smith, 1899, " Tacoma Folio," U. S. Geological Sur- 

 vey. Three divisions of the Lower Puget (middle and perhaps 

 upper Tejon), the Carbonado formation, Wilkeston sandstone, and 

 Burnett formation are named. So far no palseontological evidence 

 has been advanced to insure their recognition beyond the limits of 

 the Pierce County coal field. 



R. Arnold, 1906, " A Geological Reconnaissance of the Olympic 

 Peninsula."*^^ The use of the Arago in place of Crescent, and Mon- 

 terey in preference to Clallam has already been discussed. Other 

 beds on the north coast of Washington mapped with the Clallam as 

 undifferentiated Oligocene-Miocene are now assigned to one horizon 

 or another of the Astoria series. 



The Ouinaielt formation is divided on palasontological grounds 

 between the Empire and Merced formations. 



A. B. Reagan, 1908, " Some Notes on the Olympic Peninsula."^" 

 Most of geological data in this paper are adopted from the one by 

 the senior writer just mentioned. The Hoko River Pliocene, so- 

 called, is an area of Monterey sandstone and conglomerate uncom- 

 formable on the Astoria series. The Raft River Pliocene contains 

 a small but characteristic Empire fauna. The description of the 

 Quillayute formation is based on the glacial filling of the valley of 

 the Quillayute River. If Reagan had visited the locality from which 

 the fossils he describes from the Quillayute were brought by the 

 Indians, he would have found it to be about two miles from the 

 Devils Club swamp where he says they occur, and the formation 

 lithologically very different from what he describes. It is typical 

 Empire sandstone. 



C. E. Weaver, 1912, "A Preliminary Report on the Tertiary 

 Palaeontology of Western Washington."'^ Cowlitz formation; the 



69 5m//. Geo!. Soc. Am., XVII., 1906, pp. 451-468. 

 ■^0 Geol. Papers, Kans. Acad. Sci., 1908, pp. 131-238. 



