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

Templeton, J.S., 1950, The Mount Simon sandstone in northern Illinois: Illinois Academy of Science Transactions, v. 43, p. 151-159., Also issued in Illinois Geol. Survey Circ., no. 170, p. 151-159, 1950 (Reprint). http://archive.org/details/shortpapersongeo170temp


Summary:

Pg. 153 (fig. 2), 154 (fig. 3), 155. Mayfield member of Mount Simon formation. Name proposed for a thick sequence of interbedded conglomeratic and nonconglomeratic sandstones overlying Lovell member (new). Type section extends from depths of 2,495 to 2,850 feet. Thickness 145 to 390 feet. Underlies Lacey member (new). Recognized in subsurface of northern Illinois. Age is Late Cambrian.
Type well: depth-interval 2,495 to 2,850 feet, Wyman No. 1 (well 7), in NE/4 NE/4 SE/4 sec. 35, T. 41 N., R. 5 E., DeKalb Co., northern IL. Named from Mayfield Twp., 5 mi west of type well.

Source: US geologic names lexicon (USGS Bull. 1200, p. 2431).


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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