Mineral Resources
Online Spatial Data
Basement domains of the conterminous US and Alaska
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Wickersham
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
Fairbanks North Star
,
Matanuska-Susitna
,
Yukon-Koyukuk
Bibliographic references
Moore, T.E., and Nokleberg, W.J., 1988, Stratigraphy, sedimentology, and structure of the Wickersham terrane in the Cache Mountain area, east-central Alaska, in Galloway, J.P., and Hamilton, T.D., eds., Geologic studies in Alaska by the U.S. Geological Survey during 1987: U.S. Geological Survey Circular 1016, p. 75–80.
Bradley, D.C., McClelland, W.C., Wooden, J., Till, A.B., Roeske, S., Miller, M.L., Karl, S., and Abbott, J.G., 2007, Detrital zircon geochronology of some Neoproterozoic to Triassic rocks in interior Alaska: Geological Society of America Special Paper 431, p. 155–180.
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.