U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database
Geologic Unit: Kerber
Search archives
Map showing publication footprint
  • Usage in publication:
    • Kerber formation*
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Sandstone
    • Shale
  • AAPG geologic province:
    • San Luis basin
Publication:

Burbank, W.S., 1932, Geology and ore deposits of the Bonanza mining district, Colorado, with a section on history and production by C.W. Henderson: U.S. Geological Survey Professional Paper, 169, 166 p.


Summary:

Kerber formation. Series of coarse-grained sandstones or grits and black carbonaceous shales which overlie, with possibly a stratigraphic break, the Leadville limestone and extend up to base of lowest red-colored micaceous sediments or sandy shales of Maroon formation. Thickness 200+/- feet. Basal member is a sandstone 70 to 75 feet thick. [Is equivalent to so-called Weber limestone of Anthracite-Crested Butte district.] Age is Pennsylvanian.
Named from exposures along Kerber Creek, Bonanza district, Saguache Co., southern CO.

Source: US geologic names lexicon (USGS Bull. 896, p. 1086).


Map showing publication footprint
  • Usage in publication:
    • Kerber formation
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • San Luis basin
Publication:

Litsey, L.R., 1958, Stratigraphy and structure of the northern Sangre de Cristo Mountains, Colorado: Geological Society of America Bulletin, v. 69, no. 9, p. 1143-1178., (incl. geologic map, scale 1:42,240, published 1955)


Summary:

Pg. 1147 (fig. 2), 1159-1160. Kerber formation. Composite Paleozoic section in northern Sangre de Cristo Range shows Kerber formation, 0 to 150 feet thick, between Leadville limestone below and Minturn formation above. No fossil or plant remains. Age is considered [Early or Middle Pennsylvanian], , may be Morrowan or Atokan, based on stratigraphic position.
[Kerber Formation not separately mapped (pl. 1). On p. 1159, author states northern limit of beds is uncertain; southernmost exposures of typical Kerber is east of Grayback Mountain in Huerfano Park, Custer and Huerfano Cos., south-central CO, citing Burbank and Goddard, 1937, GSA Bull., v. 48, p. 941.]

Source: US geologic names lexicon (USGS Bull. 1200, p. 1995-1996).


  • Usage in publication:
    • Kerber formation
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Las Vegas-Raton basin
Publication:

Williamson, D.R., and Burgin, Lorraine, 1960, Limestone occurrences in Colorado: Colorado School of Mines Foundation, Mineral Industries Bulletin, v. 3, no. 1, p. __.


Summary:

Pg. 11 (chart). Kerber formation. Correlation chart shows Kerber formation underlying Sharpsdale formation (new). [Age is Pennsylvanian.]

Source: US geologic names lexicon (USGS Bull. 1200, p. 1995-1996).


Search archives

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 ([ ]).