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Map showing publication footprint
  • Usage in publication:
    • Brickeys member
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Limestone
    • Dolomite
  • AAPG geologic province:
    • Wisconsin arch
Publication:

Templeton, J.S., and Willman, H.B., 1952, Guidebook for the 16th annual field conference, central northern Illinois: Tri-State Annual Field Conference Guidebook, October 11-12, 1952, no. 16, 47 p., Also issued as Illinois State Geol. Survey Gdbk., 2nd ser., 1952. http://archive.org/details/guidebookforsixt02tris


Summary:

Figs. 3, 10, 16. Brickeys Member of Mifflin formation. Limestone or dolomite, thin- to medium-bedded. Thickness about 2 feet. Shown on columnar section as underlying Boarman member (new) of Mifflin formation and overlying Oglesby member (new) of Pecatonica formation. Age is Middle Ordovician.
[Notable exposures in Dixon-Oregon area, northern IL.]
[GNC remark (ca. 1966, US geologic names lexicon, USGS Bull. 1200, p. 473): In copy of guidebook used by compiler [G.C. Keroher], a handwritten note states Brickeys member overlies Boarman member. Since compiler had no way to determine what changes, if any, had been made in other copies of guidebook, it was impossible to be certain of true stratigraphic relation.]

Source: US geologic names lexicon (USGS Bull. 1200, p. 473).


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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