(Table 1) Clay and non-clay mineral composition of dirty ice samples from across the Arctic
Extensive dirty ice patches with up to 7 kg/m**2 sediment concentrations in layers of up to 10 cm thickness were encountered in 2005 and 2007 in numerous areas across the central Arctic. The Fe grain fingerprint determination of sources for these sampled dirty ice floes indicated both Russian and Ca...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.808630 2023-05-15T14:49:55+02:00 (Table 1) Clay and non-clay mineral composition of dirty ice samples from across the Arctic Darby, Dennis A Myers, Wesley B Jakobsson, Martin Rigor, Ignatius MEDIAN LATITUDE: 76.913688 * MEDIAN LONGITUDE: -27.893148 * SOUTH-BOUND LATITUDE: 66.800000 * WEST-BOUND LONGITUDE: -170.400000 * NORTH-BOUND LATITUDE: 89.991300 * EAST-BOUND LONGITUDE: 179.300000 * DATE/TIME START: 2005-08-30T00:00:00 * DATE/TIME END: 2007-08-21T00:00:00 * MINIMUM DEPTH, ice/snow: 0.05 m * MAXIMUM DEPTH, ice/snow: 0.05 m 2011-03-07 text/tab-separated-values, 1804 data points https://doi.pangaea.de/10.1594/PANGAEA.808630 https://doi.org/10.1594/PANGAEA.808630 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.808630 https://doi.org/10.1594/PANGAEA.808630 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Darby, Dennis A; Myers, Wesley B; Jakobsson, Martin; Rigor, Ignatius (2011): Modern dirty sea ice characteristics and sources: The role of anchor ice. Journal of Geophysical Research: Oceans, 116, C09008, https://doi.org/10.1029/2010JC006675 72-AJT-30/41 82-APB-10 89200-F3_9Avg 94BC01 95JB0003 Albite Amphibole Andesine Anorthite Anorthoclase Arctic Area/locality Biotite Bytownite CA06_18Avg Calcite Chlorite Depth bottom/max ice/snow top/min Difference Dolomite EL7 Event label GL30 GS870817-G3 H1-6 H3-10 H3-11 H3-5 H3-8 H3-9 ICEM Ice measurement IK93 Illite Kalifeldspar Kaolinite Labradorite Latitude of event LOMROG07-DICE-1 LOMROG07-DICE-2 LOMROG07-DICE-3 LOMROG07-DICE-4A LOMROG07-DICE-5 LOMROG-I Longitude of event Dataset 2011 ftpangaea https://doi.org/10.1594/PANGAEA.808630 https://doi.org/10.1029/2010JC006675 2023-01-20T09:00:48Z Extensive dirty ice patches with up to 7 kg/m**2 sediment concentrations in layers of up to 10 cm thickness were encountered in 2005 and 2007 in numerous areas across the central Arctic. The Fe grain fingerprint determination of sources for these sampled dirty ice floes indicated both Russian and Canadian sources, with the latter dominating. The presence of benthic shells and sea weeds along with thick layers (2-10 cm) of sediment covering 5-10 m2 indicates an anchor ice entrainment origin as opposed to suspension freezing for some of these floes. The anchor ice origin might explain the dominance of Canadian sources where only narrow flaw leads occur that would not favor suspension freezing as an entrainment process. Expandable clays, commonly used as an indicator of a Kara Sea origin for dirty sea ice, are present in moderately high percentages (>20%) in many circum-Arctic source areas, including the Arctic coasts of North America. Some differences between the Russian and the North American coastal areas are found in clay mineral abundance, primarily the much higher abundance of chlorite in North America and the northern Barents Sea as opposed to the rest of the Russian Arctic. However, sea ice clay mineralogy matched many source areas, making it difficult to use as a provenance tool by itself. The bulk mineralogy (clay and non-clay) does not match specific sources possibly due to reworking of the sediment in dirty floes through summer melting or the failure to characterize all possible source areas. Dataset Arctic Barents Sea Kara Sea Sea ice PANGAEA - Data Publisher for Earth & Environmental Science Arctic Barents Sea Kara Sea ENVELOPE(-170.400000,179.300000,89.991300,66.800000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
72-AJT-30/41 82-APB-10 89200-F3_9Avg 94BC01 95JB0003 Albite Amphibole Andesine Anorthite Anorthoclase Arctic Area/locality Biotite Bytownite CA06_18Avg Calcite Chlorite Depth bottom/max ice/snow top/min Difference Dolomite EL7 Event label GL30 GS870817-G3 H1-6 H3-10 H3-11 H3-5 H3-8 H3-9 ICEM Ice measurement IK93 Illite Kalifeldspar Kaolinite Labradorite Latitude of event LOMROG07-DICE-1 LOMROG07-DICE-2 LOMROG07-DICE-3 LOMROG07-DICE-4A LOMROG07-DICE-5 LOMROG-I Longitude of event |
spellingShingle |
72-AJT-30/41 82-APB-10 89200-F3_9Avg 94BC01 95JB0003 Albite Amphibole Andesine Anorthite Anorthoclase Arctic Area/locality Biotite Bytownite CA06_18Avg Calcite Chlorite Depth bottom/max ice/snow top/min Difference Dolomite EL7 Event label GL30 GS870817-G3 H1-6 H3-10 H3-11 H3-5 H3-8 H3-9 ICEM Ice measurement IK93 Illite Kalifeldspar Kaolinite Labradorite Latitude of event LOMROG07-DICE-1 LOMROG07-DICE-2 LOMROG07-DICE-3 LOMROG07-DICE-4A LOMROG07-DICE-5 LOMROG-I Longitude of event Darby, Dennis A Myers, Wesley B Jakobsson, Martin Rigor, Ignatius (Table 1) Clay and non-clay mineral composition of dirty ice samples from across the Arctic |
topic_facet |
72-AJT-30/41 82-APB-10 89200-F3_9Avg 94BC01 95JB0003 Albite Amphibole Andesine Anorthite Anorthoclase Arctic Area/locality Biotite Bytownite CA06_18Avg Calcite Chlorite Depth bottom/max ice/snow top/min Difference Dolomite EL7 Event label GL30 GS870817-G3 H1-6 H3-10 H3-11 H3-5 H3-8 H3-9 ICEM Ice measurement IK93 Illite Kalifeldspar Kaolinite Labradorite Latitude of event LOMROG07-DICE-1 LOMROG07-DICE-2 LOMROG07-DICE-3 LOMROG07-DICE-4A LOMROG07-DICE-5 LOMROG-I Longitude of event |
description |
Extensive dirty ice patches with up to 7 kg/m**2 sediment concentrations in layers of up to 10 cm thickness were encountered in 2005 and 2007 in numerous areas across the central Arctic. The Fe grain fingerprint determination of sources for these sampled dirty ice floes indicated both Russian and Canadian sources, with the latter dominating. The presence of benthic shells and sea weeds along with thick layers (2-10 cm) of sediment covering 5-10 m2 indicates an anchor ice entrainment origin as opposed to suspension freezing for some of these floes. The anchor ice origin might explain the dominance of Canadian sources where only narrow flaw leads occur that would not favor suspension freezing as an entrainment process. Expandable clays, commonly used as an indicator of a Kara Sea origin for dirty sea ice, are present in moderately high percentages (>20%) in many circum-Arctic source areas, including the Arctic coasts of North America. Some differences between the Russian and the North American coastal areas are found in clay mineral abundance, primarily the much higher abundance of chlorite in North America and the northern Barents Sea as opposed to the rest of the Russian Arctic. However, sea ice clay mineralogy matched many source areas, making it difficult to use as a provenance tool by itself. The bulk mineralogy (clay and non-clay) does not match specific sources possibly due to reworking of the sediment in dirty floes through summer melting or the failure to characterize all possible source areas. |
format |
Dataset |
author |
Darby, Dennis A Myers, Wesley B Jakobsson, Martin Rigor, Ignatius |
author_facet |
Darby, Dennis A Myers, Wesley B Jakobsson, Martin Rigor, Ignatius |
author_sort |
Darby, Dennis A |
title |
(Table 1) Clay and non-clay mineral composition of dirty ice samples from across the Arctic |
title_short |
(Table 1) Clay and non-clay mineral composition of dirty ice samples from across the Arctic |
title_full |
(Table 1) Clay and non-clay mineral composition of dirty ice samples from across the Arctic |
title_fullStr |
(Table 1) Clay and non-clay mineral composition of dirty ice samples from across the Arctic |
title_full_unstemmed |
(Table 1) Clay and non-clay mineral composition of dirty ice samples from across the Arctic |
title_sort |
(table 1) clay and non-clay mineral composition of dirty ice samples from across the arctic |
publisher |
PANGAEA |
publishDate |
2011 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.808630 https://doi.org/10.1594/PANGAEA.808630 |
op_coverage |
MEDIAN LATITUDE: 76.913688 * MEDIAN LONGITUDE: -27.893148 * SOUTH-BOUND LATITUDE: 66.800000 * WEST-BOUND LONGITUDE: -170.400000 * NORTH-BOUND LATITUDE: 89.991300 * EAST-BOUND LONGITUDE: 179.300000 * DATE/TIME START: 2005-08-30T00:00:00 * DATE/TIME END: 2007-08-21T00:00:00 * MINIMUM DEPTH, ice/snow: 0.05 m * MAXIMUM DEPTH, ice/snow: 0.05 m |
long_lat |
ENVELOPE(-170.400000,179.300000,89.991300,66.800000) |
geographic |
Arctic Barents Sea Kara Sea |
geographic_facet |
Arctic Barents Sea Kara Sea |
genre |
Arctic Barents Sea Kara Sea Sea ice |
genre_facet |
Arctic Barents Sea Kara Sea Sea ice |
op_source |
Supplement to: Darby, Dennis A; Myers, Wesley B; Jakobsson, Martin; Rigor, Ignatius (2011): Modern dirty sea ice characteristics and sources: The role of anchor ice. Journal of Geophysical Research: Oceans, 116, C09008, https://doi.org/10.1029/2010JC006675 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.808630 https://doi.org/10.1594/PANGAEA.808630 |
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.808630 https://doi.org/10.1029/2010JC006675 |
_version_ |
1766320989722902528 |