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Examples

  • The Plain is a result of glacial drift, known as the Illinoian drift because of its large exposure over areas of Illinois.

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  • Oh, Marilyn, you're just sticking up for a fellow Illinoian.

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  • Ecoregion 72j is physiographically different from the Western Dissected Illinoian Till Plain (72i).

    Ecoregions of Illinois (EPA)

  • Soybeans are better adapted to drought than corn, and can mature even when spring planting is delayed by field wetness; as a result, soybean acreage exceeds that of corn in the Southern Illinoian Till Plain (72j) (Nelson, 1978, p. 105; National Agricultural Statistics Service, 1997).

    Ecoregions of Illinois (EPA)

  • Younger soils derived primarily from Wisconsinan drift are found in central and eastern areas on the Wisconsinan till plain; they lack the claypans that characterize many soils in the Southern Illinoian Till Plain (72j) (Schwegman, 1973, p. 6).

    Ecoregions of Illinois (EPA)

  • It is generally more dissected and forested than the Illinois/Indiana Prairies (54a), and is physiographically distinct from the broad flats and hills of the Southern Illinoian Till Plain (72j).

    Ecoregions of Illinois (EPA)

  • Limited areas are underlain by Illinoian till and have different soils than occur further north on the younger tills; these soils are mostly Ultisols (Hapludults, Fragiudults) and support the ecologically significant Pocono till barrens (R. Latham, Department of Geology, University of Pennsylvania, written communication, 1995).

    Ecoregions of Delaware, Maryland, Pennsylvania, Virginia, and West Virginia (EPA)

  • However, thin, discontinuous till, deposited by Illinoian-age ice at its maximum extent, occurs in some northernmost areas (Lineback, 1967).

    Ecoregions of Illinois (EPA)

  • Wisconsinan till, glacial outwash, Recent alluvium, and, in the south, Illinoian till overlie gently dipping Devonian and Mississippian strata.

    Ecoregions of Delaware, Maryland, Pennsylvania, Virginia, and West Virginia (EPA)

  • Illinoian-age glacial deposits and land forms are extensive, but Wisconsinan-age glacial deposits are absent in contrast to Ecoregion 54 (Lineback, 1979).

    Ecoregions of Illinois (EPA)

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