- Usage in publication:
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- Babylon cyclical formation
- Modifications:
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- Original reference
- AAPG geologic province:
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- Illinois basin
Summary:
Pg. 189, 192. Babylon cyclical formation. [A name applied to basal part of Pottsville formation (Pennsylvanian) of central-western Illinois, based upon the rhythmic-cycle theory of sedimentation. Origin of name not stated, but there is a village of that name in Fulton County, Illinois.]
Source: US geologic names lexicons (USGS Bull. 896, p. 98; USGS Bull. 1200, p. 186-187).
- Usage in publication:
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- Babylon cyclothem
- Modifications:
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- Revised
- AAPG geologic province:
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- Illinois basin
Summary:
Pg. 50 (fig. 22), 65, 201, 202, 203. Babylon cyclothem in Tradewater group. Cyclothem occurs near base of Tradewater group and in sequence underlies Tartar cyclothem. Age is Pennsylvanian.
Source: US geologic names lexicon (USGS Bull. 1200, p. 186-187).
- Usage in publication:
-
- Babylon cyclothem
- Modifications:
-
- Revised
- AAPG geologic province:
-
- Illinois basin
Summary:
Pg. 52 (table 2), pl. 1. Babylon cyclothem. Recognized in western Illinois. Occurs below Tarter cyclothem. Age is Pennsylvanian. Report presents new rock-stratigraphic classification of Pennsylvanian of Illinois. Cyclical classification is retained but is independent of rock-stratigraphic classification; includes rocks also assigned to Abbott formation of McCormick group (both new).
Source: Publication; US geologic names lexicon (USGS Bull. 1200, p. 186-187).
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 ([ ]).