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Title:

CHARACTERISTICS OF RED CLAY OF DOUGLAS COUNTY, WISCONSIN

Accession Number:

00389568

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309036666

Abstract:

In the red clay region of Douglas County, Wisconsin, three types of stratigraphic succession are observed from borhole data: red clay 8 m (25 ft) thick over older red clay, red clay over brown or gray clay, and red clay over brown sand. The mean contents with standard deviation of sand (greater than 44 microns), silt (44 to 2 microns), coarse clay (2 to 0.2 microns), and fine clay (less than 0.2 microns) in red clay from 28 borehole samples are 4 plus or minus 4, 24 plus or minus 7, and 30 plus or minus 6. smectite clay is dominant in the fine clay fraction; illite and chlorite are dominant in the coarse clays; and quartz, feldspars, and carbonates are dominant in the silt and sand fractions. Particle-size distribution and mineral contents correlate with the Atterberg limit values. The equations Liquid limit = 10.0 + 0.78 (% less than 2 microns clay) and Plasticity index = -0.1 + 0.51 (% less than 2 microns clay) have correlation coefficients of 0.76 and 0.84 respectively, for this body of data. The dominant failure mode in the Little Balsam Creek drainage south of Superior and in other similar locales involves drying and cracking of a surficial layer of clay that then slides as a decollement sheet over the underyling clay. This failure may have been promoted by recent cultural practice in the area. (Author)

Supplemental Notes:

Publication of this paper sponsored by Committee on Soil and Rock Properties. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

Monograph Accession #:

01420444

Authors:

Brown, Bruce E
Mengel, J T

Editors:

Kaplan, Elizabeth W

Pagination:

pp 22-29

Publication Date:

1983

Serial:

Transportation Research Record

Issue Number: 945
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309036666

Media Type:

Print

Features:

Figures (11) ; Maps (2) ; References (8) ; Tables (3)

Uncontrolled Terms:

Particle size distribution

Geographic Terms:

Douglas County (Wisconsin)

Subject Areas:

Geotechnology; Highways; I41: General Soil Surveys

Files:

TRIS, TRB

Created Date:

Oct 30 1984 12:00AM

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