- Usage in publication:
-
- Maddox limestone
- Modifications:
-
- Named
- Dominant lithology:
-
- Limestone
- AAPG geologic province:
-
- Upper Mississippi embayment
Summary:
Name Maddox is proposed for massive limestone at base of Silurian section at Swallow Bluff, Maddox Mill, and W.D. Helton's, and also at New Era and Kelley Landing. The limestone is usually whitish in color, massive at base and more distinctly bedded near top. Occurs below the beds referred to Osgood horizon. Thins out toward Riverside and Iron City. Base of section at least is equal to the Clinton. Top may belong to Osgood horizon. Position of intermediate part is doubtful. It is evident that plane of division between Clinton and Osgood beds is rising southward and that the lithological divisions here do not correspond strictly to those farther north and northeast.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Maddox formation
- Modifications:
-
- Not used
- AAPG geologic province:
-
- Upper Mississippi embayment
Summary:
Pg. 245. Maddox formation. Foerste placed the Osgood and all of the Laurel exposed at Maddox Mill in Maddox formation [Maddox limestone]. This report, however, uses names Osgood and Laurel at Maddox Mill, as elsewhere.
Source: US geologic names lexicon (USGS Bull. 1200, p. 2314-2315).
- Usage in publication:
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- Maddox Member
- Modifications:
-
- Revised
- Reinstated
- AAPG geologic province:
-
- Upper Mississippi embayment
Summary:
The Maddox limestone of Foerste (1903) is reinstated as Maddox Member of Wayne Formation. Names Laurel and Osgood not used in this report. Maddox overlies Brassfield Formation; underlies Waldron Member of Wayne Formation. Age is Silurian.
Source: GNU records (USGS DDS-6; Reston 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 ([ ]).