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(Article of periodic en Anglais - 1989)

Document title

Source and origin of Roxana silt and middle Wisconsinan midcontinent glacial activity

Authors(s) and Affiliation(s)

JOHNSON W. H. ; FOLLMER L. R. ;

Abstract

Roxana distribution suggests the major source was drainage from the upper Mississippi River valley, and variations in loess thickness in Illinois can be explained by consideration of valley width, depth, orientation and post depositional erosion. Tills in the headwaters region of the ancient Mississippi drainage system in Minnesota and Wisconsin occur in the appropriate stratigraphic position and have colors and mineralogic compositions that suggest they could be the parent till of the Roxana

Source

Article of periodic

published at : Quaternary research / ISSN 0033-5894 / CODEN QRESAV

Editor : Elsevier, San Diego, CA - ETATS-UNIS (1970)

Millesime : 1989, vol. 31, no3 [pp. 319-331]

Bibliographic references : 61 réf.

Language

Anglais

INIST-CNRS, Cote INIST : 15739

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