Name Durbin formation proposed to include all of dolomitic series --the Euphemia, Springfield, and Cedarville dolomites. Named for exposures 1 mi east of Durbin in Mills quarries. The Springfield and Cedarville dolomites are also well exposed immediately northeast of Durbin. Age is Silurian (Niagaran).
Source: GNU records (USGS DDS-6; Reston GNULEX).
Chart 3. Durbin group. Shown on correlation chart as group including (ascending) Euphemia dolomite, Springfield dolomite, and Cedarville dolomite. Underlies Peebles dolomite; overlies Lilley formation. [Age is Middle Silurian.]
Source: US geologic names lexicon (USGS Bull. 1200, p. 1185).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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