What is Greenhorn Limestone?

The Maxville Limestone is a geologic formation in Ohio. It preserves fossils dating back to the Carboniferous period. The formation was named after the community of Maxville, Ohio.

The Delaware Limestone is a geologic formation in Ohio. It dates back to the Devonian.

The Dundee Limestone is a geologic formation in Michigan, Ohio and Ontario. It preserves fossils dating back to the Devonian period.

The Prout Limestone is a geologic formation in Ohio. It preserves fossils dating back to the Devonian period.

Gibraltar Limestone consists of greyish-white or pale-gray compact, and sometime finely crystalline, medium to thick bedded limestones and dolomites that locally contain chert seams. This formation comprises about three quarters...

The Oread Limestone is a geologic unit of formation rank within the Shawnee Group throughout much of its extent. It is exposed in Kansas, Nebraska, Missouri, Oklahoma, and Iowa. The...

The Leadville Limestone is a Mississippian geologic formation in the western United States. In Colorado, the upper part is oolitic limestone, while the lower part is primarily dolomite, and somewhat...

The Buda Limestone is a geological formation in the High Plains and Trans-Pecos regions of West Texas and in southern New Mexico, whose strata date back to the Late Cretaceous....

The Platteville Limestone is the Ordovician limestone formation in the sedimentary sequence characteristic of the upper Midwestern United States. It is characterized by its gray color, rough texture, and numerous...

The Clifton Down Limestone is a geologic formation in England. It preserves fossils dating back to the Carboniferous period.