Journal
APPLIED GEOCHEMISTRY
Volume 66, Issue -, Pages 82-87Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.apgeochem.2015.12.008
Keywords
Selenium; Molybdenum; Arsenic; Bowland Shale; Carboniferous; Shale gas
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Funding
- NERC [NE/L001764/1, NE/M010953/1]
- NERC [NE/L001764/1, NE/M010848/1, NE/M010953/1] Funding Source: UKRI
- Natural Environment Research Council [NE/L001764/1, NE/M010953/1, NE/M010848/1] Funding Source: researchfish
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The Carboniferous Bowland Shale in England, and its correlatives in Ireland, contain anomalously high concentrations of trace elements, including selenium (Se), molybdenum (Mo) and arsenic (As). High levels of these elements reflect high sulphur contents as these elements occur as trace constituents of pyrite. Anomalous Se in particular may have a volcanic provenance, from contemporary volcanic activity and/or drainage from Ordovician volcanogenic sulphide deposits. Following concern over the release of Se and As into groundwater during shale gas extraction in the US, the potential fate of Se and As during any future shale gas extraction from the Bowland Shale merits attention. It is at least an environmental issue that must be managed, but at best it could be an opportunity for extraction of Se in an environmentally sensitive manner. (C) 2015 The Authors. Published by Elsevier Ltd.
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