- Usage in publication:
-
- Scotia Bluffs sandstone
- Modifications:
-
- Original reference
- Dominant lithology:
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- Sandstone
- Mudstone
- AAPG geologic province:
-
- Eel River basin
Summary:
Pg. 13 (fig. 3), 33-35, 44-47, 111-113, pls. Scotia Bluffs sandstone of Wildcat group. Massive fine-grained sandstone with mudstone members in lower part. Thickness 1,000 to 2,000 feet. Overlies Rio Dell formation (new) of Wildcat group. Underlies Carlotta formation (new) of Wildcat group, contact gradational. In Wildcat Ridge section, upper part of Carlotta is not exposed, and lower part is noticeably more sandy than lower Carlotta in Eel River area. Term Ferndale (MacGinitie, 1943, California Div. Mines Bull., no. 118, p. 633-635) has been used for the sandstone and conglomerate in section along Wildcat Ridge. The two are mappable units, and name Scotia Bluffs sandstone is proposed for the lithologic unit immediately overlying the Rio Dell formation and underlying Carlotta formation. Fossils [listed]. Age is late Pliocene.
Type section: along Scotia Bluffs on east side of Eel River, Humboldt Co., northwestern CA.
Source: Publication; US geologic names lexicon (USGS Bull. 1200, p. 3502-3503).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
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