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Mineral Resources > Online Spatial Data > Geology > by state > Alaska

Alaska geologic unit Tswf

Stillwater Formation(?)
Geologic settingSedimentary, undivided
SiltstoneBed(Major) < Clastic < Sedimentary
Absolute age33.9 Ma to 55.8 Ma
Age typeRelative
Minimum agePhanerozoic > Cenozoic > Tertiary-Paleogene > Eocene
Maximum agePhanerozoic > Cenozoic > Tertiary-Paleogene > Eocene
Geographic extentCordova, Bering Glacier
Plafker, George, in prep, Geology of Bering Glacier and Icy Bay quadrangles: U.S. Geological Survey Miscellaneous Investigations Map I-___, scale 1:250,000, in press
Winkler, G.R., and Plafker, George, 1993, Geologic map of the Cordova and Middleton Island quadrangles, southern Alaska: U.S. Geological Survey Miscellaneous Investigations Map I-1984, scale 1:250,000.

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