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  • Usage in publication:
    • Ridgeland Formation*
  • Modifications:
    • Named
  • Dominant lithology:
    • Silt
  • AAPG geologic province:
    • Wasatch uplift
Publication:

Van Horn, Richard, 1979, The Holocene Ridgeland Formation and associated Decker Soil (new names) near Great Salt Lake, Utah, IN Contributions to stratigraphy, 1979: U.S. Geological Survey Bulletin, 1457-C, p. C1-C11.


Summary:

Named as youngest (Holocene) formation of Lake Bonneville Group. Overlies Midvale Soil and underlies Decker Soil (new). Is composed of lacustrine deposits graded to Gilbert shoreline of Lake Bonneville. The deposits are light-gray to dark-brown silt or clay and 15-190 cm thick. Formed as offshore bars, bay bars, and lake-bottom deposits. Type section measured on west bank of Ridgeland Canal in SW1/4 SE1/4 sec 20, T1S, R1W, Salt Lake Co, UT on Wasatch uplift. Is exposed in the area of Great Salt Lake.

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 ([ ]).

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