ALASKA GEOLOGY 
46 
Celtites vancouverensis Whiteaves. 1 In 1889 he extended 
the name to the argillites of Wrangell, together with 
those met with near Juneau, at Sitka, and along the east 
side of Lynn Canal, including also the altered volcanic 
rocks found in association with them, though no fossils 
were obtained at these northern localities. 2 
The same rocks were called the Yakutat System by 
Professor I. C. Russell, 3 who gave them a much higher 
place in the series than we have. They were observed by 
him under great difficulties during the ascent of Mount 
St. Elias. 
Similar rocks in Prince William Sound have been 
called the Orca Series by Mr. F. C. Schrader. 4 He paral¬ 
lelizes them provisionally with the Kenai Series of Spurr 
in the Yukon District (1896), the Yentna Series of Spurr 
in southwestern Alaska, and the Kenai Series of Eldridge 
in the Sushitna River (1898), and assigns them to the 
Eocene or Oligocene. 5 
Mr. E. O. Ulrich, who has studied the fossils gathered 
from Kadiak and Yakutat Bay, finds that their age is, 
with little doubt, lower Jurassic. (See his paper in this 
volume.) 
Most of the Jurassic fossils described from the north¬ 
west are in limestone and are assigned to much higher 
levels in this system. A few distinctly Alpine Triassic 
forms have been described from shales assigned to the 
Vancouver Series by Dr. Dawson, as noted above. It is 
also noted that the shale at Cold Bay, containing Monotis , 
1 Rep. on northern part of Vancouver Island, Geol. Survey of Canada, Ann. 
Rep., N. S., vol. 11, p. 108B. 1886. 
2 Rep. on Yukon District, Geol. Surv. of Canada, Ann. Rep., N. S., vol. m, 
p. 32B. 1889. 
3 Expedition to Mt. St. Elias, National Geographic Magazine, vol. hi, p. 167. 
1891. 
4 A Reconnaissance of a part of Prince William Sound and the Copper River 
District. 20th Ann. Rep. U. S. Geol. Survey, pt. vii, p. 404. 1900. 
5 20th Ann. Rep. U, S. Geol. Survey, Pt. vn, p. 413. 1900. 
