Cretaceous-Tertiary Strata and Kaolin Deposits in the Inner Coastal Plain of Georgia

  1. W. Burleigh Harris,
  2. Vernon J. Hurst,
  3. Paul G. Nystrom Jr.,
  4. Lauck W. Ward,
  5. Charles W. Hoffman,
  6. Sam M. Pickering Jr.,
  7. Lucille Kite Price,
  8. Ralph H. Willoughby and
  9. Victor A. Zullo
  1. Vernon J. Hurst1 and
  2. Sam M. Pickering, Jr.2

Published Online: 17 MAR 2013

DOI: 10.1029/FT172p0002

Upper Cretaceous and Cenozoic Geology of the Southeastern Atlantic Coastal Plain: Atlanta, Georgia to Chesapeake, Virginia July 1-9, 1989

Upper Cretaceous and Cenozoic Geology of the Southeastern Atlantic Coastal Plain: Atlanta, Georgia to Chesapeake, Virginia July 1-9, 1989

How to Cite

Harris, W. B., Hurst, V. J., Nystrom, P. G., Ward, L. W., Hoffman, C. W., Pickering, S. M., Price, L. K., Willoughby, R. H. and Zullo, V. A. (2013) Cretaceous-Tertiary Strata and Kaolin Deposits in the Inner Coastal Plain of Georgia, in Upper Cretaceous and Cenozoic Geology of the Southeastern Atlantic Coastal Plain: Atlanta, Georgia to Chesapeake, Virginia July 1-9, 1989, American Geophysical Union, Washington, D. C.. doi: 10.1029/FT172p0002

Author Information

  1. 1

    Geology Department, University Of Georgia, Athens, Georgia, 30602

  2. 2

    Georgia Kaolin Company, Inc., Deepstep, Georgia, 31082

Publication History

  1. Published Online: 17 MAR 2013
  2. Published Print: 1 JAN 1989

ISBN Information

Print ISBN: 9780875906171

Online ISBN: 9781118666906

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Keywords:

  • Cretaceous sediments;
  • Field trip itinerary;
  • Huber Formation;
  • Inner Coastal Plain;
  • Kaolin deposits;
  • Metamorphic rocks;
  • Sedimentary structures

Summary

Upper Cretaceous to mid-Tertiary sediments of the inner Coastal Plain sketchily record a long interval of intense weathering, erosion, and deposition in a passive area that was inundated and reexposed, repeatedly, by major fluctuations of sea level. Low to moderate relief was maintained for more than 90 my while the area alternated between inner coastal plain and inner continental shelf. Regressions are marked by fluvial kaolinitic sands and clays and well zoned weathering profiles. Transgressions are marked by littoral sands and by neritic clays and carbonates .

Kaolinite-rich detritus transported to the inner Coastal Plain originated through weathering of metamorphic and igneous rocks of the Piedmont Upland. Most of the sediments underwent more than one stage of sorting and weathering. Some were significantly modified by post-depositional leaching, oxidation, and diagenesis. Commercial kaolins are found where successive stages favored both beneficiation and final preservation. Three types of kaolin can be distinguished: soft, hard, and flint. The first two types are commercial. Superb exposures of the sediments and associated kaolins are provided by large opencut kaolin mines in this area, which is one of the world's larger producers of industrial clay.