This marker is on the roadside of US-29 and points out one of the geological features that explains the main industry of the region.
It has the same text on both sides. It reads, "The Greenbrier Limestone, which outcrops along U.S. Route 219 between here and Renick, is the "Big Lime" of the driller. Fish-egg like oölitic zones in the "Big Lime" yield oil and natural gas in West Virginia."
Onlne, there is more information. Between 345 and 326 million years ago, during the Middle Mississippian Epoch, the geologic formation was deposited. This thick, frequently 400-foot-deep carbonate layer, which stretches throughout West Virginia and portions of Kentucky, Virginia, and Maryland, was created in a shallow marine environment. Because of its porous structure, it is a valuable natural gas and oil reservoir. The Big Lime also contains a large number of karst characteristics, such as sinkholes and caverns. This formation, which gets its name from the Greenbrier River, not only supports industry but also shapes the Appalachian landscape.
There is no number on the marker which was erected in 1973 by the West Virginia Historic Commission, sponsored by the West Virginia Centennial Committee of the Oil and Natural Gas Industry.
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