from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A layer of hardpan consisting primarily of clay.
  • noun Australian A shallow depression that contains sediments rich in clay and silt, the surface of which has been hardened and dried by the sun.

from The Century Dictionary.

  • noun In geology, a shallow, saucer-like depression with a bottom of clay: a feature of the dry interior of Australia.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun geology A compact stratum of partially permeable material rich in clay


Sorry, no etymologies found.


  • Northern claypan vernal pools occur on the Santa Rosa Plain, and Pacific reedgrass series and Needlegrass grasslands occur on the rolling hills westward to the coast.

    Coastal Hills - Santa Rosa Plain

  • Claypan soils distinguish this region from surrounding regions and support potential natural vegetation of tallgrass prairie, oak-hickory woodland, and claypan prairie where soils are less permeable.

    Ecoregions of Iowa and Missouri (EPA)

  • Well-developed claypan soils on glacial till typify the Claypan Prairie ecoregion.

    Ecoregions of Iowa and Missouri (EPA)

  • Soils can be rocky and thin on steep slopes, with areas of claypan or loess similar to the Black River Hills Border (39j) to the southwest.

    Ecoregions of Iowa and Missouri (EPA)

  • Hardpan or claypan prairie types are common and found where soils have an impermeable or only slightly permeable, silty clayey subsoil below the loamier surface layer.

    Ecoregions of Kansas and Nebraska (EPA)

  • Soils are thin and rocky on steeper slopes, with claypan and loess in more level areas.

    Ecoregions of Iowa and Missouri (EPA)

  • I've toiled like hell at tarring pipes in the stinking claypan mud,

    A Stiff's Progress

  • Sometimes they found a sufficiency in a natural well or claypan; or again they struck for some creek towards the west or north, whose irregular curves were outlined on the plain by the gum-trees growing closely on its banks.

    The Red True Story Book

  • The ground was at first hard and even like the bottom of a claypan, but at a mile or so, we came on cracked earthy ground, intersected by numberless small channels running in all directions.

    Successful Exploration Through the Interior of Australia

  • Charles' father, Charlie Senior, who has been grazing Carisbrooke for more than 50 years was a pioneer of outback tourism and has been welcoming visitors to his home since 1968, ferrying them on a shuttle bus through the once dusty red claypan country between Carisbrooke and Winton that is now a sea of green. | Top Stories


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