Isotopic ratios and ion composition of massive ground ice on Herschel Island
Herschel Island in the southern Beaufort Sea is a push moraine at the northwestern-most limit of the Laurentide Ice Sheet. Stable water isotope (d18O, dD) and hydrochemical studies were applied to two tabular massive ground ice bodies to unravel their genetic origin. Buried glacier ice or basal rege...
Main Authors: | , , , , , |
---|---|
Format: | Other/Unknown Material |
Language: | English |
Published: |
PANGAEA
2011
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.809946 https://doi.org/10.1594/PANGAEA.809946 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.809946 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.809946 2024-09-15T17:51:05+00:00 Isotopic ratios and ion composition of massive ground ice on Herschel Island Fritz, Michael Wetterich, Sebastian Meyer, Hanno Schirrmeister, Lutz Lantuit, Hugues Pollard, Wayne H MEDIAN LATITUDE: 69.596500 * MEDIAN LONGITUDE: -139.092000 * SOUTH-BOUND LATITUDE: 69.568000 * WEST-BOUND LONGITUDE: -139.170000 * NORTH-BOUND LATITUDE: 69.625000 * EAST-BOUND LONGITUDE: -139.014000 2011 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.809946 https://doi.org/10.1594/PANGAEA.809946 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.809946 https://doi.org/10.1594/PANGAEA.809946 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Fritz, Michael; Wetterich, Sebastian; Meyer, Hanno; Schirrmeister, Lutz; Lantuit, Hugues; Pollard, Wayne H (2011): Origin and characteristics of massive ground ice on Herschel Island (western Canadian Arctic) as revealed by stable water isotope and hydrochemical signatures. Permafrost and Periglacial Processes, 22(1), 26-38, https://doi.org/10.1002/ppp.714 AWI_PerDyn International Polar Year (2007-2008) IPY Permafrost Research (Periglacial Dynamics) @ AWI dataset publication series 2011 ftpangaea https://doi.org/10.1594/PANGAEA.80994610.1002/ppp.714 2024-07-24T02:31:21Z Herschel Island in the southern Beaufort Sea is a push moraine at the northwestern-most limit of the Laurentide Ice Sheet. Stable water isotope (d18O, dD) and hydrochemical studies were applied to two tabular massive ground ice bodies to unravel their genetic origin. Buried glacier ice or basal regelation ice was encountered beneath an ice-rich diamicton with strong glaciotectonic deformation structures. The massive ice isotopic composition was highly depleted in heavy isotopes (mean d18O: -33 per mil; mean dD: -258 per mil), suggesting full-glacial conditions during ice formation. Other massive ice of unknown origin with a very large d18O range (from -39 to -21 per mil) was found adjacent to large, striated boulders. A clear freezing slope was present with progressive depletion in heavy isotopes towards the centre of the ice body. Fractionation must have taken place during closed-system freezing, possibly of a glacial meltwater pond. Both massive ground ice bodies exhibited a mixed ion composition suggestive of terrestrial waters with a marine influence. Hydrochemical signatures resemble the Herschel Island sediments that are derived from nearshore marine deposits upthrust by the Laurentide ice. A prolonged contact between water feeding the ice bodies and the surrounding sediment is therefore inferred. Other/Unknown Material Arctic Beaufort Sea Herschel Island Ice Ice Sheet International Polar Year IPY permafrost Permafrost and Periglacial Processes PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-139.170000,-139.014000,69.625000,69.568000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI_PerDyn International Polar Year (2007-2008) IPY Permafrost Research (Periglacial Dynamics) @ AWI |
spellingShingle |
AWI_PerDyn International Polar Year (2007-2008) IPY Permafrost Research (Periglacial Dynamics) @ AWI Fritz, Michael Wetterich, Sebastian Meyer, Hanno Schirrmeister, Lutz Lantuit, Hugues Pollard, Wayne H Isotopic ratios and ion composition of massive ground ice on Herschel Island |
topic_facet |
AWI_PerDyn International Polar Year (2007-2008) IPY Permafrost Research (Periglacial Dynamics) @ AWI |
description |
Herschel Island in the southern Beaufort Sea is a push moraine at the northwestern-most limit of the Laurentide Ice Sheet. Stable water isotope (d18O, dD) and hydrochemical studies were applied to two tabular massive ground ice bodies to unravel their genetic origin. Buried glacier ice or basal regelation ice was encountered beneath an ice-rich diamicton with strong glaciotectonic deformation structures. The massive ice isotopic composition was highly depleted in heavy isotopes (mean d18O: -33 per mil; mean dD: -258 per mil), suggesting full-glacial conditions during ice formation. Other massive ice of unknown origin with a very large d18O range (from -39 to -21 per mil) was found adjacent to large, striated boulders. A clear freezing slope was present with progressive depletion in heavy isotopes towards the centre of the ice body. Fractionation must have taken place during closed-system freezing, possibly of a glacial meltwater pond. Both massive ground ice bodies exhibited a mixed ion composition suggestive of terrestrial waters with a marine influence. Hydrochemical signatures resemble the Herschel Island sediments that are derived from nearshore marine deposits upthrust by the Laurentide ice. A prolonged contact between water feeding the ice bodies and the surrounding sediment is therefore inferred. |
format |
Other/Unknown Material |
author |
Fritz, Michael Wetterich, Sebastian Meyer, Hanno Schirrmeister, Lutz Lantuit, Hugues Pollard, Wayne H |
author_facet |
Fritz, Michael Wetterich, Sebastian Meyer, Hanno Schirrmeister, Lutz Lantuit, Hugues Pollard, Wayne H |
author_sort |
Fritz, Michael |
title |
Isotopic ratios and ion composition of massive ground ice on Herschel Island |
title_short |
Isotopic ratios and ion composition of massive ground ice on Herschel Island |
title_full |
Isotopic ratios and ion composition of massive ground ice on Herschel Island |
title_fullStr |
Isotopic ratios and ion composition of massive ground ice on Herschel Island |
title_full_unstemmed |
Isotopic ratios and ion composition of massive ground ice on Herschel Island |
title_sort |
isotopic ratios and ion composition of massive ground ice on herschel island |
publisher |
PANGAEA |
publishDate |
2011 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.809946 https://doi.org/10.1594/PANGAEA.809946 |
op_coverage |
MEDIAN LATITUDE: 69.596500 * MEDIAN LONGITUDE: -139.092000 * SOUTH-BOUND LATITUDE: 69.568000 * WEST-BOUND LONGITUDE: -139.170000 * NORTH-BOUND LATITUDE: 69.625000 * EAST-BOUND LONGITUDE: -139.014000 |
long_lat |
ENVELOPE(-139.170000,-139.014000,69.625000,69.568000) |
genre |
Arctic Beaufort Sea Herschel Island Ice Ice Sheet International Polar Year IPY permafrost Permafrost and Periglacial Processes |
genre_facet |
Arctic Beaufort Sea Herschel Island Ice Ice Sheet International Polar Year IPY permafrost Permafrost and Periglacial Processes |
op_source |
Supplement to: Fritz, Michael; Wetterich, Sebastian; Meyer, Hanno; Schirrmeister, Lutz; Lantuit, Hugues; Pollard, Wayne H (2011): Origin and characteristics of massive ground ice on Herschel Island (western Canadian Arctic) as revealed by stable water isotope and hydrochemical signatures. Permafrost and Periglacial Processes, 22(1), 26-38, https://doi.org/10.1002/ppp.714 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.809946 https://doi.org/10.1594/PANGAEA.809946 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.80994610.1002/ppp.714 |
_version_ |
1810292900229021696 |