Silicate in marine sediments from the Emerland Basin, North Atlantic
A method was developed to measure porosity and dissolved interstitial silicate at millimeter intervals or less in a sediment core. In cores from Emerald Basin (Scotian Shelf), interstitial concentrations near the sediment surface did not drop rapidly to bottom-water concentrations as measured in bot...
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1984
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.735060 2023-05-15T17:33:42+02:00 Silicate in marine sediments from the Emerland Basin, North Atlantic Andrews, Daniel Hargrave, B T MEDIAN LATITUDE: 44.200000 * MEDIAN LONGITUDE: -63.500000 * SOUTH-BOUND LATITUDE: 44.170000 * WEST-BOUND LONGITUDE: -63.525000 * NORTH-BOUND LATITUDE: 44.230000 * EAST-BOUND LONGITUDE: -63.475000 * DATE/TIME START: 1983-03-20T00:00:00 * DATE/TIME END: 1985-06-27T00:00:00 1984-03-15 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.735060 https://doi.org/10.1594/PANGAEA.735060 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.735060 https://doi.org/10.1594/PANGAEA.735060 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Andrews, Daniel; Hargrave, B T (1984): Close interval sampling of interstitial silicate and porosity in marine sediments. Geochimica et Cosmochimica Acta, 48(4), 711-722, https://doi.org/10.1016/0016-7037(84)90097-8 Core EmeraldBasin2-11 EmeraldBasin2-3 EmeraldBasin4-1 EmeraldBasin4-2 Silicon Cycling in the World Ocean SINOPS Dataset 1984 ftpangaea https://doi.org/10.1594/PANGAEA.735060 https://doi.org/10.1016/0016-7037(84)90097-8 2023-01-20T07:31:41Z A method was developed to measure porosity and dissolved interstitial silicate at millimeter intervals or less in a sediment core. In cores from Emerald Basin (Scotian Shelf), interstitial concentrations near the sediment surface did not drop rapidly to bottom-water concentrations as measured in bottle casts (28 µM) but remained as high as 166 µM in the upper 0.5 mm of sediment High rates of benthic silicate release were measured which could not be accounted for by interstitial concentration gradients or by ventilation of macro-invertebrate burrows. The silicate discontinuity observed between the sediments and water column suggests that a diffusive sublayer exists in a zone of viscous flow above the sediment surface. This is possible only if a surface reaction is primarily responsible for silicate release. By assuming a linear concentration gradient across this diffusive sublayer, the silicate release rates were used to estimate the thickness of the sublayer to be about 2 mm. Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science Burrows ENVELOPE(163.650,163.650,-74.300,-74.300) Emerald Basin ENVELOPE(162.500,162.500,-54.000,-54.000) ENVELOPE(-63.525000,-63.475000,44.230000,44.170000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Core EmeraldBasin2-11 EmeraldBasin2-3 EmeraldBasin4-1 EmeraldBasin4-2 Silicon Cycling in the World Ocean SINOPS |
spellingShingle |
Core EmeraldBasin2-11 EmeraldBasin2-3 EmeraldBasin4-1 EmeraldBasin4-2 Silicon Cycling in the World Ocean SINOPS Andrews, Daniel Hargrave, B T Silicate in marine sediments from the Emerland Basin, North Atlantic |
topic_facet |
Core EmeraldBasin2-11 EmeraldBasin2-3 EmeraldBasin4-1 EmeraldBasin4-2 Silicon Cycling in the World Ocean SINOPS |
description |
A method was developed to measure porosity and dissolved interstitial silicate at millimeter intervals or less in a sediment core. In cores from Emerald Basin (Scotian Shelf), interstitial concentrations near the sediment surface did not drop rapidly to bottom-water concentrations as measured in bottle casts (28 µM) but remained as high as 166 µM in the upper 0.5 mm of sediment High rates of benthic silicate release were measured which could not be accounted for by interstitial concentration gradients or by ventilation of macro-invertebrate burrows. The silicate discontinuity observed between the sediments and water column suggests that a diffusive sublayer exists in a zone of viscous flow above the sediment surface. This is possible only if a surface reaction is primarily responsible for silicate release. By assuming a linear concentration gradient across this diffusive sublayer, the silicate release rates were used to estimate the thickness of the sublayer to be about 2 mm. |
format |
Dataset |
author |
Andrews, Daniel Hargrave, B T |
author_facet |
Andrews, Daniel Hargrave, B T |
author_sort |
Andrews, Daniel |
title |
Silicate in marine sediments from the Emerland Basin, North Atlantic |
title_short |
Silicate in marine sediments from the Emerland Basin, North Atlantic |
title_full |
Silicate in marine sediments from the Emerland Basin, North Atlantic |
title_fullStr |
Silicate in marine sediments from the Emerland Basin, North Atlantic |
title_full_unstemmed |
Silicate in marine sediments from the Emerland Basin, North Atlantic |
title_sort |
silicate in marine sediments from the emerland basin, north atlantic |
publisher |
PANGAEA |
publishDate |
1984 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.735060 https://doi.org/10.1594/PANGAEA.735060 |
op_coverage |
MEDIAN LATITUDE: 44.200000 * MEDIAN LONGITUDE: -63.500000 * SOUTH-BOUND LATITUDE: 44.170000 * WEST-BOUND LONGITUDE: -63.525000 * NORTH-BOUND LATITUDE: 44.230000 * EAST-BOUND LONGITUDE: -63.475000 * DATE/TIME START: 1983-03-20T00:00:00 * DATE/TIME END: 1985-06-27T00:00:00 |
long_lat |
ENVELOPE(163.650,163.650,-74.300,-74.300) ENVELOPE(162.500,162.500,-54.000,-54.000) ENVELOPE(-63.525000,-63.475000,44.230000,44.170000) |
geographic |
Burrows Emerald Basin |
geographic_facet |
Burrows Emerald Basin |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Andrews, Daniel; Hargrave, B T (1984): Close interval sampling of interstitial silicate and porosity in marine sediments. Geochimica et Cosmochimica Acta, 48(4), 711-722, https://doi.org/10.1016/0016-7037(84)90097-8 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.735060 https://doi.org/10.1594/PANGAEA.735060 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.735060 https://doi.org/10.1016/0016-7037(84)90097-8 |
_version_ |
1766132292361650176 |