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Geology of the Clay Deposits in the Olive Hill District, Kentucky

Published online by Cambridge University Press:  01 January 2024

Sam H. Patterson  and
John W. Hosterman
Sam H. Patterson
Affiliation:
U.S. Geological Survey, Beltsville, Maryland, USA
John W. Hosterman
Affiliation:
U.S. Geological Survey, Beltsville, Maryland, USA
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Abstract

THE Olive Hill fire clay bed of Crider (1913) is the principal source of the raw material used in the refractory industry of eastern Kentucky. The bed is a discontinuous underclay from 1 to 20 ft above a prominent unconformity which separates Mississippian and Pennsylvanian rocks. Upper Mississippian rocks consist of ten marine limestone and shale units all truncated by the unconformity. Pennsylvanian rocks are chiefly: (a) massive deltaic sandstone; (b) cut-and-fill deposits of shale, siltstone and sandstone which contain several beds of coal and underclay including the Olive Hill fire clay of Crider (1913); and (c) dark-gray shale beds.

The Olive Hill fire clay of Crider consists of approximately one-third flint clay, two-thirds semiflint clay, and minor amounts of plastic clay. The clay mineral content ranges from nearly pure kaolinite to kaolinitic clay containing about 40 percent illite and mixed-layer clay. The kaolinite ranges from highly crystalline to very poorly crystalline “fireclay” kaolinite. The degree of crystallinity of the kaolinite and hardness of the clay vary inversely with the amount of illite and mixed-layer clay present. The nearly pure kaolinite is believed to have formed by removal of silica and alkalies from mixtures of kaolinite, illite and mixed-layer clay by leaching shortly after deposition.

An isopach map shows that Crider’s Olive Hill fire clay occurs in irregular, lens-shaped deposits. Fossil plant rootstocks with rootlets attached in the clay clearly indicate it supported plant growth. The overlying coal and presence of some organic material in the clay suggest that the Olive Hill fire clay was deposited under a reducing environment in swamps.

Type
Article
Information
Clays and Clay Minerals (National Conference on Clays and Clay Minerals) , Volume 7 , February 1958 , pp. 178 - 194
Copyright
Copyright © Clay Minerals Society 1958

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Footnotes

Publication authorized by the Director, U.S. Geological Survey.

References

Bates, T. F. and Comer, J. J. (1955) Electron microscopy of clay surfaces: in Clays and Clay Minerals, Natl. Acad. Sci.—.Natl. Research Council, pub. 395, pp. 1–25.Google Scholar
Brindley, G. W. (1951) The kaolin minerals: in X-ray Identification and Crystal Structures of Clay Minerals, Mineralogical Society, London, pp. 32–75.Google Scholar
Brindley, G. W. and Robinson, K. (1947) An x-ray study of some kaolinitic fireclays: Trans. Brit. Ceram. Soc., v. 40, pp. 49–62.Google Scholar
Crider, A. F. (1913) The fire clays and fire clay industries of the Olive Hill and Ashland districts of northeastern Kentucky: Kentucky Geol. Survey, ser. IV, v. I, pt. II, pp. 589–711.Google Scholar
Fuller, J. O. (1955) Source of Sharon conglomerate of northeastern Ohio: Bull. Geol. Soc. Amer., v. 66, pp. 159–175.CrossRefGoogle Scholar
Grim, R. E. (1953) Clay Mineralogy. McGraw Hill, New York, 384 pp.Google Scholar
Keller, W. D., Westcott, J. F. and Bledsoe, A. O. (1954) The origin of Missouri fire clays: in Clays and Clay Minerals, Natl. Acad, of Sci.—Natl. Research Council, pub. 327. pp. 7–46.Google Scholar
Kosler, T. L. (1956) Environment and origin of the Cretaceous kaolin deposits of Georgia and South Carolina: Econ. Geol., v. 51, no. 6, pp. 541–554, 5 figs.CrossRefGoogle Scholar
McConnell, Duncan, Levinson, A. A. and de Pablo-Galan, L. (1956) Study of some chemically analyzed Ohio clays by x-ray diffraction and differential thermal analysis: Ohio J. Sci., v. 56, pp. 275–284.Google Scholar
McFarlan, A. C. and Walker, P. H. (1956) Some old Chester problems—correlations along the eastern belt of outcrop: Kentucky Geol. Surmy Bull. 20, 36 pp.Google Scholar
McMillan, N. J. (1956) Petrology of the Nodaway underclay (Pennsylvanian), Kansas: Kansas Geol. Survey Bull. 119, pt. 6, pp. 187–249.Google Scholar
Potter, P. E. and Siever, Raymond (1956) Sources of basal Pennsylvanian sediments in Eastern Interior basin. 1. Cross-bedding: J. Geol., v. 64, no. 3, pp. 225–244.CrossRefGoogle Scholar
Reed, A. J. Jr. and McFarlan, A. C. (1958) The mineral industry of Kentucky: in Minerals Yearbook, 1956, v. 3, Area Reports, U.S. Bureau of Mines, pp. 493–509.Google Scholar
Schultz, L. G. (1958) Petrology of underclays: Bull. Geol. Soc. Amer., v. 69, pp. 363–402.CrossRefGoogle Scholar
Siever, Raymond and Potter, P. E. (1956) Sources of basal Pennsylvanian sediments in the Eastern Interior basin. II. Sedimentary petrology: J. Geol., v. 64, no. 4, pp. 317335.CrossRefGoogle Scholar
Twenhofel, W. H. (1939) Principles of Sedimentation: McGraw-Hill, New York, 610 pp.Google Scholar
Weller, J. M. et al. (1948) Correlation of the Mississippian formations of North America: Butt. Geol. Soc. Amer., v. 59, pp. 91–196.CrossRefGoogle Scholar
Wilson, C. W. Jr. and Stearns, R. G. (1957) Paleogeography during deposition of Pennsylvanian sand bodies in Tennessee: Bull. Geol. Soc. Amer., v. 68, p. 1812. (Abstract.).Google Scholar