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National Geologic Map Database
Geologic Unit: Noix
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Map showing publication footprint
  • Usage in publication:
    • Noix Limestone*
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Illinois basin
    • Ozark uplift
Publication:

Harrison, R.W., 1997, Bedrock geologic map of the St. Louis 30' x 60' quadrangle, Missouri and Illinois: U.S. Geological Survey Miscellaneous Investigations Series Map, I-2533, 2 sheets, 7 p., scale 1:100,000 [http://ngmdb.usgs.gov/Prodesc/proddesc_13024.htm]


Summary:

Noix Limestone of Late Ordovician (Cincinnatian) age included with undivided Ordovician and Silurian rocks in MO and IL. Shown in subsurface only. Previously thought to be Silurian by Rubey (1952), but subsequently assigned Ordovician age by Thompson and Satterfield (1971, 1975) and by Amsden (1974, 1983, 1986).

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


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).