The influence of metamorphic grade on arsenic in metasedimentary bedrock aquifers: A case study from Western New England, USA

The influence of metamorphic grade on arsenic in metasedimentary bedrock aquifers: A case study from Western New England, USA

Elevated As occurs in many meta-sedimentary bedrock aquifers where elevated bulk-rock As content is one of the primary controls on the concentration of As in groundwater. This study was designed to determine As concentrations in a black shale, black slate and black phyllite sequence that comprises t...

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Veröffentlicht in:The Science of the total environment 2015-02, Vol.505, p.1320-1330
Hauptverfasser: Ryan, Peter C., West, David P., Hattori, Keiko, Studwell, Sarah, Allen, David N., Kim, Jonathan
Format: Artikel
Sprache:eng
Schlagworte:
Aquifers
Arsenic
Arsenic - analysis
Bedrock
Bedrock aquifer
Chlorites
Elevated
Environmental Monitoring - methods
Geologic Sediments - chemistry
Groundwater
Groundwater - chemistry
Metamorphic
Metamorphism
New England
Phyllite
Shale
Slate
Slates
Water Pollutants, Chemical - analysis
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Zusammenfassung:Elevated As occurs in many meta-sedimentary bedrock aquifers where elevated bulk-rock As content is one of the primary controls on the concentration of As in groundwater. This study was designed to determine As concentrations in a black shale, black slate and black phyllite sequence that comprises the bedrock aquifer system of the Taconic Mountain region of southwestern Vermont and adjacent New York State. Variability in groundwater As concentrations provides the impetus for this study: 25% of wells in weakly metamorphosed shales and slates (
ISSN:0048-9697
1879-1026
DOI:10.1016/j.scitotenv.2014.05.021