Quarrying landscape at Flint Ridge State Memorial, Ohio. Hopewell culture peoples excavated Vanport chert from shallow pits across this ridgeline for over 10,000 years.
Vanport chert exposed in a creek bed at Flint Ridge State Memorial, Ohio — the distinctive multicolored flint quarried here for over 10,000 years and traded across the Hopewell exchange network.
Flint Ridge was an important source of flint and Native Americans extracted the flint from hundreds[citation needed] of quarries along the ridge.[5] This "Ohio Flint" was traded across eastern North America and has been found as far west as present-day Kansas City[4] and south around the Gulf of Mexico.[6] Flint from the Knife River area in modern North Dakota has been found in archaeological sites associated with the Hopewell Culture in Ohio.[7][a] Ohio flint is the state gemstone of Ohio.[10][11]
↑Getz, Garry L. (2023). "FLINT Ohio's Official Gemstone"(PDF). Ohio Department of Natural Resources (Reviseded.). Educational Leaflet No. 6. Retrieved February 7, 2026.
↑Rice, C.L., Kosanke, R.M., and Henry, T.W., 1994, Revision of nomenclature and correlations of some Middle Pennsylvanian units in the northwestern part of the Appalachian basin, Kentucky, Ohio, and West Virginia, IN Rice, C.L., ed., Elements of Pennsylvanian stratigraphy, central Appalachian basin: Geological Society of America Special Paper, 294, p. 7–26. doi:10.1130/SPE294-p7ISBN9780813722948
12DeLong, R. M., 1972, Bedrock Geology of the Flint Ridge Area, Licking and Muskingum Counties, Ohio: Ohio Division of Geological Survey Report of Investigations 84, color map with text. hdl:1811/80331 — via The Ohio State University
↑DeBoer, Warren R. (2004). "Little Bighorn on the Scioto: The Rocky Mountain Connection to Ohio Hopewell". American Antiquity. 69 (1): 85–107. doi:10.2307/4128349. JSTOR4128349.
↑Stout, Wilbur; Schoenlaub, R.A. (1945). The Occurrence of Flint in Ohio(PDF). Fourth Series. Columbus: State of Ohio Department of Natural Resources. p.13. Bulletin 46. Retrieved February 7, 2026.
↑Clark, Frances (1984). "Knife River Flint and Interregional Exchange". Midcontinental Journal of Archaeology. 9 (2): 173–198. JSTOR20707930.