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Examining the feasibility of modeling the subsurface structure of two volcanic units in drill-holes UE18r and ER-EC-2a using existing magnetic data

Open-File Report 2010-1112

Prepared in cooperation with the U.S. Department of Energy Office of Environmental Management, National Nuclear Security Administration, Nevada Site Office, under Interagency Agreement DE-AI52-01NV13944
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Abstract

The magnetic properties of two volcanic units encountered in two drill holes, ER-EC-2a and UE18r, located in the vicinity of the Nevada Test Site, were investigated to determine if the units were significantly more magnetic than overlying units and, thus, detectable by using aeromagnetic data. Magnetic-susceptibility measurements were made on cuttings from the drill holes and were combined with published data on remanent magnetism to generate two-dimensional magnetic models, based on an interpreted geologic cross-section. The resulting magnetic anomaly calculated from the models was compared with the observed aeromagnetic anomaly and was found to differ significantly from it. Furthermore, the calculated magnetic anomalies were found to be relatively insensitive to changes in the two units of interest.

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Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Examining the feasibility of modeling the subsurface structure of two volcanic units in drill-holes UE18r and ER-EC-2a using existing magnetic data
Series title:
Open-File Report
Series number:
2010-1112
Edition:
-
Year Published:
2010
Language:
ENGLISH
Publisher:
U.S. Geological Survey
Contributing office(s):
Western Region Geology and Geophysics Science Center
Description:
iii, 12 p.; Appendices
Online Only (Y/N):
Y
Additional Online Files(Y/N):
N