- Usage in publication:
-
- Placer Creek formation*
- Modifications:
-
- Named
- Dominant lithology:
-
- Till
- Gravel
- Sand
- Silt
- AAPG geologic province:
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- Paradox basin
Summary:
Named for Placer Creek. Type locality is in NW1/4 sec 16, T26S, R24E, Grand Co, UT in the Paradox basin. Is divided into lower and upper members that are separated by Porcupine Ranch soil (new). Lackey Creek soil (new) developed on upper member. Comprises nine facies--till, alluvial gravel, talus, alluvial sand and silt, alluvial-fan gravel, solifluction mantle, frost rubble, slopewash mantle, and eolian sand and silt. None of these facies occur in a single section. Within each member the facies interfinger. Overall thickness not stated. Overlies Harpole Mesa Formation. May be overlain by Beaver Basin or Gold Basin Formation. Of Pleistocene, or early Wisconsin age.
Source: GNU records (USGS DDS-6; Denver 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 ([ ]).