A Caltech Library Service

Geological and geophysical synthesis of the tectonics of portions of British Columbia, the Yukon Territory, and Alaska

St. Amand, Pierre (1957) Geological and geophysical synthesis of the tectonics of portions of British Columbia, the Yukon Territory, and Alaska. Geological Society of America Bulletin, 68 (10). pp. 1343-1370. ISSN 0016-7606. doi:10.1130/0016-7606(1957)68[1343:GAGSOT]2.0.CO;2.

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item:


The seismic activity of Alaska is associated with the Aleutian Island arc and with a line of faulting in southeastern Alaska that appears to be the northward extension of the San Andreas fault system. The activity in western Alaska is enhanced where the Aleutian Range intersects the Alaska Range. It is again enhanced where the Chugach Range intersects the Aleutian Range. The Denali fault can be traced from the Bering Sea through the Kuskokwim Mountains, past Mt. McKinley, to a point past Lake Dezadeash. Here it is joined by a line of faulting associated with a northern extension of the San Andreas system. A similar line of faulting runs from Lake Clark past Anthracite Ridge to join the faulting in southeastern Alaska. It is suggested that the major Yakutat Bay earthquakes took place on a very long, straight lateral fault running from north of Yakutat Bay to south of the Queen Charlotte Islands. The Denali fault is thought to be right lateral strike slip in habit, with over 150 miles of movement. Seismic data and geologic observations indicate that the north Pacific Basin, from Baja California to the Kurile Islands at least, is and has been for a long time, rotating counterclockwise.

Item Type:Article
Related URLs:
URLURL TypeDescription[1343:GAGSOT]2.0.CO;2DOIArticle
Additional Information:Copyright © 1957, The Geological Society of America, Inc. Received May 1, 1955.
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Caltech Division of Geological Sciences721
Issue or Number:10
Record Number:CaltechAUTHORS:20140806-162008043
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:48153
Deposited By: George Porter
Deposited On:07 Aug 2014 15:18
Last Modified:10 Nov 2021 18:04

Repository Staff Only: item control page