- Usage in publication:
-
- Blomeyer Member
- Modifications:
-
- Original reference
- Dominant lithology:
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- Limestone
- Dolomite
- AAPG geologic province:
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- Ozark uplift
- Wisconsin arch
Summary:
Pg. 80-81, 231. Blomeyer Member of Mifflin Formation. Unit is limestone or dolomite, argillaceous, lithographic to chalky, blue-gray to brown-gray, and weathers gray to buff. Thickness 12 feet at type section; 20 feet in Midwest Dairy well at Cape Girardeau; 3 feet in type section of Medusa Member of Pecatonica Formation in Lee County, western Illinois. Basal member of formation; underlies Brickeys Member. Age is Middle Ordovician (Champlainian).
Type section: in small quarry on the north side of MO Highway 74, 0.25 mi east of the highway junction at Rock Levee, in northwest corner of NE/4 NW/4 sec. 24, T. 30 N., R. 13 E., Cape Girardeau quadrangle, Cape Girardeau Co., eastern MO. Named from the village of Blomeyer, MO, about 6 mi northwest of the type section.
Source: US geologic names lexicon (USGS Bull. 1350, p. 77-78).
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 ([ ]).