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Geologic Unit: Eli
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Map showing publication footprint
  • Usage in publication:
    • Eli Limestone*
  • Modifications:
    • Named
    • Biostratigraphic dating
  • Dominant lithology:
    • Limestone
    • Shale
  • AAPG geologic province:
    • Alaska Northern region
Publication:

Tailleur, I.L., Brosge, W.P., and Reiser, H.N., 1967, Palinspastic analysis of Devonian rocks in northwestern Alaska, IN Oswald, D.H., ed., International symposium on the Devonian System [proceedings]: Alberta Society of Petroleum Geologists, Calgary, Alberta, 1967, v. 2, p. 1345-1361.


Summary:

Named as formation of Baird Group (new) for exposures east of north branch of Eli River (approximately 67 deg 47.5'N, 161 deg 51'W) western Baird Mountains, northern AK, also designated as type section. Consists of generally well-stratified ferruginous muddy limestone and interbeds or zones of calcareous to noncalcareous shale; locally includes some sandstone. Color is characteristically grayish orange and brown. Thickness at type is 165 ft. Interfingers with and overlies Skajit Limestone of Baird Group. In places underlies Lisburne Group. Age is Late Devonian (Frasnian) based on paleontologic evidence.

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


Map showing publication footprint
  • Usage in publication:
    • Eli Limestone*
  • Modifications:
    • Age modified
  • AAPG geologic province:
    • Alaska Northern region
Publication:

Oliver, W.A., Jr., Merriam, C.W., and Churkin, Michael, Jr., 1975, Ordovician, Silurian, and Devonian corals of Alaska, IN Paleozoic corals of Alaska: U.S. Geological Survey Professional Paper, 823-B, p. B13-B44. [Available online from the USGS PubsWarehouse: http://pubs.er.usgs.gov/pubs/pp/pp823AD]


Summary:

Age is Middle and Late Devonian (Givetian to Famennian) as shown in correlation chart.

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 ([ ]).

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