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  • Usage in publication:
    • Euphemia dolomite
  • Modifications:
    • Named
  • Dominant lithology:
    • Dolomite
  • AAPG geologic province:
    • Cincinnati arch
Publication:

Foerste, A.F., 1917, Notes on Silurian fossils from Ohio and other central states: Ohio Journal of Science, v. 17, no. 6, p. 187-204.


Summary:

Name Euphemia dolomite applied to very porous Mottled Zone of Prosser (1916, Journal of Geology, p. 334-365). Identified by Orton with his West Union formation of more southern counties in OH. Cannot be identified west of New Paris nor south of Cedarville. Overlies Laurel limestone and is regarded as inaugurating the dolomitic series herein named Durbin formation, which includes the Euphemia, Springfield, and Cedarville dolomites. Age is Silurian (Niagaran).

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


Map showing publication footprint
  • Usage in publication:
    • Euphemia dolomite
  • Modifications:
    • Age modified
  • AAPG geologic province:
    • Cincinnati arch
Publication:

Foerste, A.F., 1935, Correlation of Silurian formations in southwestern Ohio, southeastern Indiana, Kentucky, and western Tennessee: Denison University, Bulletin of the Scientific Laboratories, v. 35, no. 14, p. 119-205., Also issued in Sci. Lab Jour., v. 30, art. 3, 1935


Summary:

Euphemia dolomite is of Lockport age. At Springfield, OH, unit is 8 ft thick and is overlain by typical Springfield dolomite and underlain by Massie clay. Thicknesses given at other places range from 2.6 ft at New Paris to 7.2 ft at Cedarville and south of Covington. Not identified south of Cedarville. [Foerste's Springfield dolomite appears to be only a part of Springfield limestone of Orton.]

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


Map showing publication footprint
  • Usage in publication:
    • Euphemia dolomite
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Cincinnati arch
Publication:

Swartz, C.K. (chairman), 1942, Correlation of the Silurian formations of North America; [Chart No. 3]: Geological Society of America Bulletin, v. 53, no. 4, p. 533-538.


Summary:

Chart 3. Euphemia dolomite of Durbin group. Shown on correlation chart as basal formation of Durbin group. Stratigraphically above Lilley formation. [Age is Middle Silurian.]

Source: US geologic names lexicon (USGS Bull. 1200, p. 1295-1296).


Map showing publication footprint
  • Usage in publication:
    • Euphemia Dolomite
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Cincinnati arch
Publication:

Ausich, W.I., 1987, John Bryan State Park, Ohio; Silurian stratigraphy, IN Biggs, D.L., ed., North-central Section of the Geological Society of America, Centennial field guide: Geological Society of America, North-Central Section, The Decade of North American Geology (DNAG), Centennial Field Guide, v. 3, p. 419-422.


Summary:

Euphemia Dolomite averages 1.6 to 2.6 m in thickness. Environment of deposition was normal marine offshore, free from clastic influence; similar to Cedarville Dolomite. Unconformably overlies Massie Shale. Correlates with Bisher Formation to the southeast. Age is Wenlockian.

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


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