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(Article of periodic en Anglais - 1983)

Document title

The Late Wisconsinan savanna terrace in tributaries to the upper Mississippi River

Authors(s) and Affiliation(s)

FLOCK M. A. ;

Abstract

The Savanna Terrace, composed of alternating red and gray clayey sediments of late Wisconsinan age, is the highest glaciofluvial-lacustrine deposit without a loess cover in the upper Mississippi valley. Chemical, physical, and mineralogical data show that two different sources provided sediment. Radiocarbon dates obtained from the lower Illinois valley indicate that the terrace sediments were deposited sometime between about 13,100 and 9 500 years ago. Soils developed on the terrace are variable in their physical, chemical and mineralogical properties.

Source

Article of periodic

published at : Quaternary research New York

Editor :

Millesime : 1983, vol. 20, no2 [pp. 165-176]

Bibliographic references : 47 réf.

Language

Anglais

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