BET surface area distributions in polar stream sediments: Implications for silicate weathering in a cold-arid environment

•BET surface areas are compared for fine-grained Antarctic glacial stream sediments.•Variable and high-magnitude surface area values found in Antarctic polar streams.•Eolian processes and ephemeral streamflow influence surface area patterns.•Sediment surface areas from polar glaciers equal/exceed te...

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Bibliographic Details
Published in:Applied geochemistry 2015-01, Vol.52, p.31-42
Main Authors: Marra, Kristen R., Elwood Madden, Megan E., Soreghan, Gerilyn S., Hall, Brenda L.
Format: Article
Language:English
Subjects:
Channels
Drift
Glaciers
Sediments
Streams
Surface area
Valleys
Weathering
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Summary:•BET surface areas are compared for fine-grained Antarctic glacial stream sediments.•Variable and high-magnitude surface area values found in Antarctic polar streams.•Eolian processes and ephemeral streamflow influence surface area patterns.•Sediment surface areas from polar glaciers equal/exceed temperate glacier sediments. BET surface area values are critical for quantifying the amount of potentially reactive sediments available for chemical weathering and ultimately, prediction of silicate weathering fluxes. BET surface area values of fine-grained (
ISSN:0883-2927
1872-9134
DOI:10.1016/j.apgeochem.2014.11.005