- Usage in publication:
-
- Linn gravels
- Modifications:
-
- Named
- Dominant lithology:
-
- Gravel
- AAPG geologic province:
-
- Cascades province
Summary:
Named for Linn County where well exposed. Type section designated as cliff about 30 ft high on left bank of North Santiam River, sec. 30, T9S R1W, Stayton 15' quad, Linn Co., OR. Term used to designate gravels of stage of alluviation next younger than Leffler gravels (new); also proposed to use term Linn gravels for all deposits of equivalent age throughout Willamette Valley. Is older than Willamette silts. Considered to be of Tahoe or Detroit glacial stage of early Wisconsin time [Pleistocene].
Source: GNU records (USGS DDS-6; Menlo GNULEX).
- Usage in publication:
-
- Linn Member
- Modifications:
-
- Revised
- AAPG geologic province:
-
- Cascades province
Summary:
Linn Gravels of Allison (1953) reduced in rank and assigned as Linn Member (lower member of 2) of Rowland Formation (new). Underlies Diamond Hill Member (new) of Rowland Formation. Age given as late Pleistocene.
Source: GNU records (USGS DDS-6; Menlo GNULEX).
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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).