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Map showing publication footprint
  • Usage in publication:
    • Stewartville dolomite
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Sioux uplift
Publication:

Bassler, R.S., 1911, The early Paleozoic Bryozoa of the Baltic provinces: U.S. National Museum Bulletin, no. 77, 382 p.


Summary:

Pg. 25-27. Stewartville dolomite. Porous soft yellowish dolomite and mottle magnesium limestone (Maclurea bed) containing the MACLURINA MANITOBENSIS fauna, 0 to 100 feet thick; underlain by 0 to 20 feet of unfossiliferous sandy mudstone. Overlies Prosser limestone. Is top formation of Trenton group.

Source: US geologic names lexicon (USGS Bull. 896, p. 2063).


Map showing publication footprint
  • Usage in publication:
    • Stewartville dolomite*
  • Modifications:
    • Named
  • Dominant lithology:
    • Dolomite
  • AAPG geologic province:
    • Sioux uplift
Publication:

Ulrich, E.O., 1911, Revision of the Paleozoic systems: Geological Society of America Bulletin, v. 22, p. 281-680.


Summary:

Plate. 27. Stewartville dolomite (Maclurea bed). Unconformably overlies Prosser limestone and unconformably underlies Wykoff limestone. Is equivalent to upper part of Galena dolomite.
Named for Stewartville, Olmstead County, Minnesota.

Source: US geologic names lexicon (USGS Bull. 896, p. 2063); GNU records (USGS DDS-6; Reston GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Stewartville division
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Wisconsin arch
Publication:

Trowbridge, A.C., 1935, [Road logs and stratigraphic sections], IN Kay, G.F., and Trowbridge, A.C., Conference leaders, Upper Mississippi Valley, Iowa City, Iowa, to Duluth, Minnesota: Kansas Geological Society Guidebook for the Annual Field Conference, August 25-September 1, 1935, no. 9, p. 1-236, 423-471., Prepared in cooperation with Iowa, Illinois, Wisconsin, and Minnesota geol. surveys


Summary:

Pg. 27. Stewartville division of Galena dolomite can be seen in Jo Daviess County, Illinois.

Source: US geologic names lexicon (USGS Bull. 896, p. 2063).


Map showing publication footprint
  • Usage in publication:
    • Stewartville Formation
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Sioux uplift
Publication:

Sloan, R.E., 1987, Tectonics, biostratigraphy, and lithostratigraphy of the Middle and Late Ordovician of the Upper Mississippi Valley, IN Sloan, R.E., ed., Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations, no. 35, p. 7-20.


Summary:

Stewartville Formation of Galena Group. Stewartville Member of Wise Lake Formation is revised to Stewartville Formation in Minnesota; includes (ascending) Sinsinawa Member and Rifle Hill Member (new). Is restricted from Illinois and Iowa; replaced with Rifle Hill Member of Wise Lake Formation. Age is Late Ordovician (Edenian). Report includes correlation chart, cross sections, graphic section. [See also entry under Rifle Hill.]

Source: Modified from GNU records (USGS DDS-6; Reston GNULEX, Denver 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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