Mineral Resources
Online Spatial Data
Basement domains of the conterminous US and Alaska
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Yukon-Tanana upper
Basement domain in the Alaska
Geologic information
Region
Alaska
Crust
Type:
Passive margin
Formation age:
700-350 Ma
Accretion
Type:
Collisional/StrSlip
Age:
215 Ma
Notes
Continental rise, Laurentian origin
Geographic extent
Southeast Fairbanks
,
Yukon-Koyukuk
Bibliographic references
Dusel-Bacon, Cynthia, and Williams, I.S., 2009, Evidence for prolonged mid-Paleozoic plutonism and ages of crustal sources in east-central Alaska from SHRIMP U-Pb dating of syn-magmatic, inherited and detrital zircon: Canadian Journal of Earth Sciences, v. 46, p. 21–39.
Piercey, S.J., and Colpron, M., 2009, Composition and provenance of the Snowcap assemblage, basement to the Yukon-Tanana terrane, northern Cordillera: Implications for Cordilleran crustal growth, Geosphere, v. 5, p. 439–464.