Preliminary aeromagnetic map of the Nevada Test Site and vicinity, Nevada

Kirchoff-Stein, K. S.; Ponce, David A.; Chuchel, Bruce A.

doi:10.3133/ofr89446

Cited by 4 publications

(2 citation statements)

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“…Numerous aeromagnetic surveys and related investigations have been conducted at the NTS in the past several decades mainly in support of the WTP (Kirchoff-Stein et al, 1989;McCafferty and Grauch, 1997;Ponce, 1999). Aeromagnetic data were used to help define the subsurface shape of the Climax and Gold Meadows granitic stocks (Bath et al, 1983;Phelps et al, 2004).…”

Section: Geophysical Investigationsmentioning

confidence: 99%

A Hydrostratigraphic System for Modeling Groundwater Flow and Radionuclide Migration at the Corrective Action Unit Scale, Nevada Test Site and Surrounding Areas, Clark, Lincoln, and Nye Counties, Nevada

Prothro¹,

Drellack²,

Mercadante³

2009

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Underground Test Area (UGTA) corrective action unit (CAU) groundwater flow and contaminant transport models of the Nevada Test Site (NTS) and vicinity are built upon hydrostratigraphic framework models (HFMs) that utilize the hydrostratigraphic unit (HSU) as the fundamental modeling component. The delineation and three-dimensional (3-D) modeling of HSUs within the highly complex geologic terrain that is the NTS requires a hydrostratigraphic system that is internally consistent, yet flexible enough to account for overlapping model areas, varied geologic terrain, and the development of multiple alternative HFMs. The UGTA CAUscale hydrostratigraphic system builds on more than 50 years of geologic and hydrologic work in the NTS region. It includes 76 HSUs developed from nearly 300 stratigraphic units that span more than 570 million years of geologic time, and includes rock units as diverse as marine carbonate and siliciclastic rocks, granitic intrusives, rhyolitic lavas and ash-flow tuffs, and alluvial valley-fill deposits.The UGTA CAU-scale hydrostratigraphic system uses a geology-based approach and two-level classification scheme. The first, or lowest, level of the hydrostratigraphic system is the hydrogeologic unit (HGU). Rocks in a model area are first classified as one of ten HGUs based on the rock's ability to transmit groundwater (i.e., nature of their porosity and permeability), which at the NTS is mainly a function of the rock's primary lithology, type and degree of postdepositional alteration, and propensity to fracture.

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Section: Geophysical Investigationsmentioning

confidence: 99%

A Hydrostratigraphic System for Modeling Groundwater Flow and Radionuclide Migration at the Corrective Action Unit Scale, Nevada Test Site and Surrounding Areas, Clark, Lincoln, and Nye Counties, Nevada

Prothro¹,

Drellack²,

Mercadante³

2009

View full text Add to dashboard Cite

show abstract

“…Numerous aeromagnetic surveys and investigations have been conducted at the NTS in the past several decades mainly in support of the WTP (Kirchoff-Stein et al, 1989;McCafferty and Grauch, 1997;Ponce, 1999). Aeromagnetic data have typically been utilized at the NTS to delineate buried structures by identifying linear magnetic anomalies within buried volcanic rocks.…”

Section: Aeromagnetic Datamentioning

confidence: 99%