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National Geologic Map Database

Geologic Unit: Puget

Usage:

Puget Group (WA*)


Subunits:

(alphabetical) --all in WA: Bayne Formation, Carbonado Formation*, Kummer Formation*, Northcraft Formation*, Renton Formation*, Spiketon Formation*, Tiger Mountain Formation*, Tukwila Formation*.


Geologic age:

Tertiary
Eocene, middle*
Eocene, late*


Type section, locality, area and/or origin of name:

Not designated. Extensively exposed over wide area south and east of Puget Sound, WA (White, 1888).


AAPG geologic province:

Puget Sound province*


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

Slash (/) indicates name does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).