Named for community of Lakedale, upper Yakima River drainage basin, Kittitas Co, WA. Includes (ascending): Bullfrog, Ronald, Domerie, and Hyak Members (all new). [See members for designated type localities]. [Name Lakedale Drift first used by Porter (1975).] Composed of till and gravel moraines and outwash terraces mantled by loess. Overlies Kittitas Drift (new); underlies Holocene alluvium. Is Pleistocene age.
Source: GNU records (USGS DDS-6; Menlo GNULEX).
Freshness of depositional landforms and meagerness of weathering and of soil development identify Lakedale Drift with Fraser Glaciation of Puget Lowland. Age is approximately 0.02 to 0.01 Ma.
Source: GNU records (USGS DDS-6; Menlo GNULEX).
Lakedale Drift appears to span most of Wisconsin with Bullfrog Member probably being early Wisconsin on basis of relative age-dating criteria (weathering rinds, soils, loess).
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 ([ ]).