Nuclear magnetic resonanance logs of fractured bedrock at the Hidden Lane Landfill site, Culpeper Basin, Virginia

Carole D. Johnson; Stephanie N. Phillips; Frederick D. Day-Lewis; Claire R. Tiedeman; Bruce Rundell; Edward Gilbert

doi:10.4133/sageep.33-029

Nuclear magnetic resonanance logs of fractured bedrock at the Hidden Lane Landfill site, Culpeper Basin, Virginia

By: Carole D. Johnson, Stephanie N. Phillips, Frederick D. Day-Lewis, Claire R. Tiedeman, Bruce Rundell, and Edward Gilbert

https://doi.org/10.4133/sageep.33-029

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Abstract

In May 2018, the U.S. Geological Survey (USGS) in cooperation with the U.S. Environmental Protection Agency (EPA) collected borehole nuclear magnetic resonance (bNMR) logs in three boreholes completed in sandstone and siltstone of the Balls Bluff Member of the Bull Run Formation at a Superfund Site in Culpeper Basin, Virginia. The bNMR logs were used to aid in the evaluation of the aquifer by measuring the porosity, determining the mobile and immobile fractions of water, and estimating the hydraulic conductivity, to evaluate the potential storage and transport properties at the site. The bNMR method measures the transverse (T₂) decay in nuclear magnetism in response to radio-frequency pulses. The relaxation decay is related to water content and the size of the pores where the water resides. In addition, the relaxation decay parameters are used to estimate hydraulic conductivity. The results were compared to other borehole logs collected at the site and to regional groundwater investigations in similar rock formations.

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Additional publication details
Publication type	Conference Paper
Publication Subtype	Conference Paper
Title	Nuclear magnetic resonanance logs of fractured bedrock at the Hidden Lane Landfill site, Culpeper Basin, Virginia
DOI	10.4133/sageep.33-029
Year Published	2021
Language	English
Publisher	Society of Exploration Geophysicists
Contributing office(s)	WMA - Earth System Processes Division
Description	6 p.
Larger Work Type	Book
Larger Work Subtype	Conference publication
Larger Work Title	Symposium on the application of geophysics to engineering and environmental problems proceedings
First page	63
Last page	68
Conference Title	Symposium on the Application of Geophysics to Engineering and Environmental Problems 2021
Country	United States
State	Virginia
City	Culpeper
Other Geospatial	Hidden Lane Landfill site
Google Analytic Metrics	Metrics page