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Map showing publication footprint
  • Usage in publication:
    • Windermere series
  • Modifications:
    • Named
  • AAPG geologic province:
    • Northern Rocky Mountain region
Publication:

Walker, J.F., 1926, Geology and mineral deposits of Windermere map area, British Columbia: Canada Geological Survey Memoir, 148, 69 p., (incl. geologic map, scale 1:125,000)


Summary:

Windermere series named and divided into Toby conglomerate (base) and Horsethief formation (top) in this report. No type locality designated. Probably named for Windermere mining district, BC, CN in the Northern Rocky Mountain region. Unconformably overlies Purcell series [= Belt Series in US (Wilmarth, 1938, US geologic names lexicon, USGS Bull. 896, p. 1746)] and underlies Upper Cambrian Ottertail formation in the Windermere area. Is thought to be equivalent to Summit series of the International Boundary area, and to the Hector and Carrol Creek formations. Is of Late Precambrian age.

Source: GNU records (USGS DDS-6; Denver GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Windermere Group*
  • Modifications:
    • Adopted
    • Age modified
  • AAPG geologic province:
    • Okanogan province
Publication:

Miller, F.K., McKee, E.H., and Yates, R.G., 1973, Age and correlation of the Windermere Group in northeastern Washington: Geological Society of America Bulletin, v. 84, no. 11, p. 3723-3730.


Summary:

Windermere series of Walker (1926) is adopted as the Windermere Group. Age is Precambrian Z.

Source: GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Windermere Supergroup [Canada
    • Group in U.S.]
  • Modifications:
    • Age modified
  • AAPG geologic province:
    • Okanogan province
    • Idaho Mountains province
    • British Columbia
Publication:

Stewart, J.H., 1991, Latest Proterozoic and Cambrian rocks of the western United States; An overview, IN Cooper, J.D., and Stevens, C.H., eds., Paleozoic paleogeography of the western United States; Pacific Coast paleogeography symposium II: Society of Economic Paleontologists and Mineralogists, Pacific Section, Field Trip Guidebook, Bakersfield, CA, March 4-8, 1991, book 67, p. 13-38.


Summary:

Age of the Windermere Group is [everywhere] revised from Middle(?) and Late Proterozoic to: Late Proterozoic based on isotopic age data (Sm/Nd whole-rock age of about 760 Ma) and regional stratigraphic relations.

Source: GNU records (USGS DDS-6; Menlo GNULEX).


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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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