BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



VOL. 16, PP. 391-410, PLS. 67-70 JUNE 24, 1905 



MESOZOIC SECTION ON COOK INLET AND ALASKA 

 PENINSULA* 



BY T. W. STANTON AND G. C. MARTIN 



(Presented before the Society December 31, 190 J/) 



CONTENTS 



Page 



Introduction 391 



General geology of the region 392 



Mesozoic formations and faunas 393 



Upper Triassic 393 



Lower Jurassic 396 



Middle Jurassic — Enochkin formation 397 



Upper Jurassic — Naknek formation 402 



Lower Cretaceous 407 



Upper Cretaceous 408 



Resume" 409 



Introduction 



The localities discussed in this paper are situated in the southwestern 

 part of Alaska, on the shores of Cook inlet and on the Alaska peninsula. 

 Most of them are on the strip of coast forming the southern half of the 

 shore of Cook inlet and the eastern half of the south shore of the Alaska 

 peninsula. 



The facts here presented include some of the results of a trip made by 

 the authors in small boats during the summer of 1904 from Snug harbor, 

 on Cook inlet, to Cold bay, on Shelikof strait. Isolated localities both 

 to the eastward and to the westward were also visited. 



There are various references to the Mesozoic rocks and fossils of parts 

 of this region. Many of the early references f have been summarized 



♦Published by permission of the Director of the U. S. Geological Survey. 



|C. Grewingk : Beitrag zur Kenntniss der orographischen und geognostischen Beschatfenheit 

 der Nord-West Kuste Amerikas mit den anliegenden Inseln. Verhandl. Russ. Kais. Mineralog. 

 Ges. zu St Petersburg, Jahrg. 1848 und '49 (1850), pp. 121, 344-347. 



E. von Eichwald : Geognostisch-Palseontologische Bemerkungen uber die Halbinsel Mangi- 

 schlak und die Aleutischen Inseln. St. Petersburg (1871), pp. 88-200. 



J. Marcou : Explication d'une seconde edition de la carte geologique de la terre. Zurich (1875), 

 pp. 138-140. 



LIII-Boll. Gbol. Soc. Am., Vol. 16,1904 (391) 



