Type Formation Primary Dolomite Overlies Davis Formation | Unit of Elvins Group Country United States Underlies Potosi Formation | |
Region St. Francois County, Missouri | ||
The Derby-Doerun Dolomite is a Cambrian geologic formation exposed in southeast Missouri. Originally the Derby and Doerun were originally considered separate formations, but now considered a single unit. The combined name is from the Derby Mine and the Doe Run Lead Company of the Old Lead Belt.
References
Derby-Doerun Dolomite Wikipedia(Text) CC BY-SA