Skip to main content
U.S. flag

An official website of the United States government

Evolution of deep structure along the trans-Alaska crustal transect, Chugach Mountains and Copper River Basin, southern Alaska

January 1, 1991

One of the most important results of the Trans-Alaska Crustal Transect investigations is the discovery that more than one third of the North American plate in southern Alaska (Chugach Mountains and Copper River basin) consists of tectonically underplated oceanic lithosphere. In southern Alaska, exposed accreted tectonostratigraphic terranes, include, from south to north along the transect, the Prince William, Chugach, Peninsular, and Wrangellia terranes. A crustal root appears to abut the tectonically underplated sequence to the south. Unfortunately, in results 2 and 3 the apparent crosscutting and abutting relationships can not be unambiguously resolved. Three scenarios, have been offered to explain the evolution of this structure. -from Authors

Publication Year 1991
Title Evolution of deep structure along the trans-Alaska crustal transect, Chugach Mountains and Copper River Basin, southern Alaska
Authors G. S. Fuis, G. Plafker
Publication Type Article
Publication Subtype Journal Article
Series Title Journal of Geophysical Research
Index ID 70016953
Record Source USGS Publications Warehouse