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Proceedings Paper

Magnetic soil properties at two arid to semi-arid sites in the western United States
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Paper Abstract

In this paper we present the results of recent field and laboratory studies of the mineralogy and magnetic properties of young and/or weakly developed soils in Montana and California. The Chevallier Ranch UXO site in Montana is characterized by a basaltic plug and radiating feeder dikes, which is found surrounded by shales of the Spokane Formation. The site in California consists of an offset alluvial fan soil chronosequence of Little Rock Creek along the Mojave section of the San Andreas fault. The fan sediments include significant amounts of mafic material. The fan ages range from 16 to 413 thousand years. The results of magnetic susceptibility measurements and laboratory analysis of mineralogy demonstrate that the magnetic susceptibility in these soils is predominantly correlated with parent material and less with age or landscape position. Slow rates of soil forming processes lead to relatively low frequency dependence in magnetic susceptibility as compared to similar-age soils in tropical environments. The magnetic character of the soils can be accurately predicted with a previously developed model.

Paper Details

Date Published: 16 May 2006
PDF: 11 pages
Proc. SPIE 6217, Detection and Remediation Technologies for Mines and Minelike Targets XI, 62170O (16 May 2006); doi: 10.1117/12.665625
Show Author Affiliations
Remke L. van Dam, Michigan State Univ. (United States)
J. Bruce J. Harrison, New Mexico Tech. (United States)
Carson L. Rittel, New Mexico Tech. (United States)
William Lettis & Associates Inc. (United States)
Jan M.H. Hendrickx, New Mexico Tech. (United States)
Brian Borchers, New Mexico Tech. (United States)


Published in SPIE Proceedings Vol. 6217:
Detection and Remediation Technologies for Mines and Minelike Targets XI
J. Thomas Broach; Russell S. Harmon; John H. Holloway Jr., Editor(s)

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