Millstones Made of French Buhr at Site of Clover Hill Mill, Trumbull County, Ohio (IMAGE)

American Geosciences Institute

Millstones Made of French Buhr at Site of Clover Hill Mill, Trumbull County, Ohio

Caption

A) This is a composite millstone (runner stone) composed of chert segments, tightly bound with iron band. B) This is a composite millstone (bedstone) with deteriorated iron band that has allowed individual segments to separate. C) This is a millstone with deteriorated plaster top from which loose chert scraps were collected. Staff in each photograph is marked in 1 dm segments (for a total length of 1.5 m).

Credit

J.T. Hannibal et al.; SEPM (Society for Sedimentary Geology)

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