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Koyukuk-Holycross

Basement domain in the Alaska

Geologic information

Region Alaska
Crust
Formation age: 175-125 Ma
Accretion
Type: Collisional
Age: 135-115 Ma
Notes Koyukuk arc

Geographic extent

Bethel, Yukon-Koyukuk

Bibliographic references

Hoare, J.M., 1961, Preliminary geology along the Lower Yukon River, Alaska: U.S. Geological Survey Open-File Report 61–64, scale 1:500,000.Box, S.E., and Patton, W.W., Jr., 1989, Igneous history of the Koyukuk terrane, western Alaska—Constraints on the origin, evolution and ultimate collision of an accreted island arc terrane: Journal of Geophysical Research, v. 94, p. 15,843–15,867.Patton, W.W., Jr., and Box, S.E. 1989, Tectonic setting of the Yukon-Koyukuk basin and its borderlands, western Alaska: Journal of Geophysical Research, v. 94, n. B11, p.15,807–15,820.