- Usage in publication:
-
- Wyatt Member
- Modifications:
-
- Named
- Dominant lithology:
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- Alluvium
- AAPG geologic province:
-
- Cascades province
Summary:
Named as lowermost member (of 4) of Willamette Formation [Silt]. Type locality designated in secs.25-26 T15S R4W near Wyatt School, Linn Co, OR. Consists of yellowish-brown channel deposits of sandy and silty alluvium. Thickness is 3 m. Unconformably overlies Diamond Hill Member (new) of Rowland Formation (new). Underlies Greenback or Irish Bend Member (both new) of Willamette Silt. 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 ([ ]).