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Loess of the Upper Mississippi Valley driftless area

Auteurs :
LEIGH, D.S.
KNOX, J.C.

Description :
Loess of the Driftless Area includes four distinct late Quaternary lithostratigraphic units. Erosion has removed parts or all of the pre-late Wisconsian loess at many sites. These formations consist largely of loess and retransported loess that typically occurs on uplands, terraces, and valley margins in the region. Past climatic conditions, which favored erosion of loess, as well as a temporally erratic spatial extent of former continental ice sheets in North America, which provided the dust supply, probably account for the low number of loess units along the Mississippi Valley.


Type de document :
Article de périodique

Source :
Quaternary research, issn : 0033-5894, 1994, vol. 42, n°. 1, p. 30-40, Collation : Illustration, Références bibliographiques : 51 ref.

Date :
1994

Editeur :
Pays édition : Etats-Unis, San Diego, CA, Elsevier

Langue :
Anglais
Droits :
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