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National Geologic Map Database
Geologic Unit: Weber
Map showing publication footprint
  • Usage in publication:
    • Weber shales
  • Modifications:
    • Original reference
  • AAPG geologic province:
    • Eagle basin
Publication:

Emmons, S.F., 1882, Geology and mining industry of Leadville, Lake County, Colorado, IN Powell, J.W., Second annual report of the United States Geological Survey to the Secretary of the Interior, 1880-1881: U.S. Geological Survey Annual Report, 2, p. 203-292. [Available online from the USGS PubsWarehouse: http://pubs.er.usgs.gov/pubs/ar/ar2]


Summary:

Pg. 215-230, 1883 (USGS Leadville Atlas), and 1886 (USGS Mon. 12). [A name applied, on questionable correlation with Weber quartzite of Utah, to 300 feet of thin-bedded black bituminous shale underlying so-called "Weber grits" and overlying "Blue" (Leadville) limestone. Age is Pennsylvanian.]

Source: US geologic names lexicon (USGS Bull. 896, p. 2294).


Map showing publication footprint
  • Usage in publication:
    • Weber shales†
  • Modifications:
    • Abandoned
  • AAPG geologic province:
    • Eagle basin
    • Piceance basin
Publication:

Girty, G.H., 1903, The Carboniferous formations and faunas of Colorado: U.S. Geological Survey Professional Paper, 16, 546 p.


Summary:

Weber should be abandoned in Colorado. Correctness of correlation of shales and grits in [Leadville and neighboring regions of] Colorado with Weber quartzite (the type formation) of Wasatch Mountains, Utah, is very doubtful.

Source: US geologic names lexicon (USGS Bull. 896, p. 2294).


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 ([ ]).