Skip to Main Content
Skip Nav Destination
GEOREF RECORD

Sensitivity of soil radon to geology and the distribution of radon and uranium in the Hylas Zone area, Virginia

Alexander E. Gates and Linda C. S. Gundersen
Sensitivity of soil radon to geology and the distribution of radon and uranium in the Hylas Zone area, Virginia (in Geologic controls on radon, Alexander E. Gates (editor) and Linda C. S. Gundersen (editor))
Special Paper - Geological Society of America (1992) 271: 17-27

Abstract

Shear zones and bedrock units as thin as 3 to 4 m in width can be detected using radon and equivalent uranium (eU) concentrations in soils overlying the Hylas zone area, Virginia. Soil radon concentrations in the area range from 144 to 12,081 pCi/L, with distinct contrasts in concentrations among many of the rock types. Equivalent uranium concentrations range from 0.4 to 9.8 ppm; they also reflect bedrock geology but less distinctly than soil radon, which is subject to surficial mechanical and chemical processes. The formation of saprolite and subsequent soil processes produce variability in uranium concentrations and consequently contacts and other fine geologic details can be obscured near the surface. Soil radon analyses at a depth of 75 cm, and using small (20 ml) samples, largely circumvent these problems and can be used as an effective geologic mapping tool in covered areas, provided that (1) there is a uranium concentration contrast in the bedrock, and that (2) the soil is derived directly from bedrock. The scale of variability of radon in soil gas indicates that radon potential maps should be constructed on the basis of geology rather than political divisions.


ISSN: 0072-1077
EISSN: 2331-219X
Coden: GSAPAZ
Serial Title: Special Paper - Geological Society of America
Serial Volume: 271
Title: Sensitivity of soil radon to geology and the distribution of radon and uranium in the Hylas Zone area, Virginia
Title: Geologic controls on radon
Author(s): Gates, Alexander E.Gundersen, Linda C. S.
Author(s): Gates, Alexander E.editor
Author(s): Gundersen, Linda C. S.editor
Affiliation: Rutgers University, Department of Geology, Newark, NJ, United States
Affiliation: Rutgers University, Department of Geology, Newark, NJ, United States
Pages: 17-27
Published: 1992
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
ISBN: 0-8137-2271-3
References: 29
Accession Number: 1993-044940
Categories: Geochemistry of rocks, soils, and sedimentsEnvironmental geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables, geol. sketch maps
N36°34'60" - N39°28'00", W83°34'60" - W75°15'00"
Secondary Affiliation: U. S. Geological Survey, USA, United StatesU. S. Geological Survey, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 1993
Program Name: USGSOPNon-USGS publications with USGS authors
Close Modal

or Create an Account

Close Modal
Close Modal