784 INDEX TO THE STEATIGEAPHY OF NOETH AMEEICA. 



obtained. Kenai plants from Alaska have been determined by Mr. KJnowlton to be of upper 

 Eocene age and the harmony between the age determinations of the plants and animals is 

 exceedingly satisfactory. The nature of the Eocene deposits indicates that the area of sedi- 

 mentation was several times just below sea level, probably near to shore, and at other times 

 above sea level, receiA/ing wash from higher lands, or overgrown by dense growths of vegetation. 



O 5. KODIAK ISLAND AND KATMAI BAY. 



Dall '^° refers as follows to Katmai Bay and Kodiak Island : 



Katmai Bay, some miles westward from Amahk Harbor, is the site of a village and trading 

 station. The portage across the mountains of the peninsula ends here. On this portage both 

 coal and petroleum have been found, the exact locality not being stated. The latter is a dark 

 lubricating oil, which is said to float on the surface of certain ponds or lakes. No information 

 could be obtained about the coal, but it almost certainly belongs to the age of the Kenai beds. 



Tertiary beds occur in various places on the islands of the Kadiak group, both of Kenai 

 age and of the later Unga beds containing Miocene marine fossils. 



On the island of Kadiak marine Miocene strata are found, and among the specimens brought 

 back by Wossnessenski were clay ironstones containing plant remains referable to the Kenai 

 group. These stones were used by the native women for reddening the inner surface of dressed 

 skins, and the only indication of locality for them is that they came from the northern part of 

 the island. About the middle of the island, surrounding Ugak Bay, at the old settlement of 

 Orlovsk and on tTie northern sh6re of Mihuda Bay next southward, and on the opposite side of 

 the island, part of the shores of Uganuk Bay and of Uganuk Island in the bay, sandstones with 

 lignite in thin seams, overlain in places by marine sandstones hke those of Unga, are reported 

 on the authority of Kharitonoff and other Eussians familiar with the island. 



O 8. SOUTHEASTEBN ALASKA. 



During the season of 1907 Atwood visited the two localities in southeastern 

 Alaska where Eocene strata had been reported,"^^^ and he has fvirnished the following 

 information. On the shores of Hamilton Bay, Kupreanof Island, there is a small 

 area of sandstones, shales, conglomerates, and lignite, which lithologically resemble 

 the Kenai formation of other portions of Alaska. The localization of these strata 

 to a somewhat restricted basin is also suggestive of the Kenai. They rest uncon- 

 formably upon much-deformed beds of Triassic age and older and are overlain uncon- 

 formably by glacial drift and recent alluvium. The flora obtained from a stratum 

 not more than 15 feet in thickness contains^ according to F. H. Knowlton, Upper 

 Cretaceous cycads, possibly redeposited from older strata, and many typical Kenai 

 plants. 



At Killisnoo Inlet, an irregular reentrant on the west shore of Admiralty Island, 

 sandstones, shales, conglomerates, and lignites outcrop on the shores. These strata 

 have the same character as those near Hamilton Bay and are of similar small extent. 

 They rest unconformably upon strata that are considered to be of Paleozoic age, 

 and on their truncated edges there is some glacial drift. No record of animal life 

 was found in this locality, but the plant remains contain Upper Cretaceous and 

 Kenai (Eocene) forms. 



At these two localities in southeastern Alaska the stratigraphic and floral 

 studies seem to indicate a period of continuous deposition from late Cretaceous 

 time into Eocene time. Such conditions prevailed in other portions of Alaska. 



