Early Cretaceous methane seepage system and associated carbonates, biota and geochemistry, Sverdrup Basin, Ellef Ringnes Island, Nunavut ...
Over one hundred carbonate deposits, interpreted as having formed at methane seepage sites in the Sverdrup Basin have been discovered on Ellef Ringnes Island, Canadian Arctic. The deposits, up to 2.7 metres tall and 60 metres wide, are found within the lower member of the Lower Cretaceous Christophe...
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Online Access: | https://dx.doi.org/10.11575/prism/25767 https://prism.ucalgary.ca/handle/11023/1102 |
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ftdatacite:10.11575/prism/25767 2023-11-05T03:38:06+01:00 Early Cretaceous methane seepage system and associated carbonates, biota and geochemistry, Sverdrup Basin, Ellef Ringnes Island, Nunavut ... Williscroft, Krista 2013 https://dx.doi.org/10.11575/prism/25767 https://prism.ucalgary.ca/handle/11023/1102 en eng Graduate Studies University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission. Biogeochemistry Geochemistry FOS Earth and related environmental sciences Geology Arctic Methane Seep Carbonate Ellef Ringnes article master thesis CreativeWork Other 2013 ftdatacite https://doi.org/10.11575/prism/25767 2023-10-09T10:52:52Z Over one hundred carbonate deposits, interpreted as having formed at methane seepage sites in the Sverdrup Basin have been discovered on Ellef Ringnes Island, Canadian Arctic. The deposits, up to 2.7 metres tall and 60 metres wide, are found within the lower member of the Lower Cretaceous Christopher Formation, a silty marine shale. The carbonates have complex and heterogeneous structures typical of seep carbonates, including banded botryoidal and clotted textures as well as void filling sparite. Stable carbon isotopes show highly 13C-depleted values, as low as δ13CVPDB = -53‰, indicative of authigenic carbonate precipitation via the anaerobic oxidation of biogenic methane. Abundant and well-preserved fauna include multiple species of bivalves, worm tubes, ammonites and gastropods. Methane seepage is calculated to have lasted ~500,000 years and was brought about by a tensional stress regime as well as salt diapirism related faulting. ... Master Thesis arctic methane Arctic Ellef Ringnes Island Nunavut sverdrup basin DataCite Metadata Store (German National Library of Science and Technology) |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
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English |
topic |
Biogeochemistry Geochemistry FOS Earth and related environmental sciences Geology Arctic Methane Seep Carbonate Ellef Ringnes |
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Biogeochemistry Geochemistry FOS Earth and related environmental sciences Geology Arctic Methane Seep Carbonate Ellef Ringnes Williscroft, Krista Early Cretaceous methane seepage system and associated carbonates, biota and geochemistry, Sverdrup Basin, Ellef Ringnes Island, Nunavut ... |
topic_facet |
Biogeochemistry Geochemistry FOS Earth and related environmental sciences Geology Arctic Methane Seep Carbonate Ellef Ringnes |
description |
Over one hundred carbonate deposits, interpreted as having formed at methane seepage sites in the Sverdrup Basin have been discovered on Ellef Ringnes Island, Canadian Arctic. The deposits, up to 2.7 metres tall and 60 metres wide, are found within the lower member of the Lower Cretaceous Christopher Formation, a silty marine shale. The carbonates have complex and heterogeneous structures typical of seep carbonates, including banded botryoidal and clotted textures as well as void filling sparite. Stable carbon isotopes show highly 13C-depleted values, as low as δ13CVPDB = -53‰, indicative of authigenic carbonate precipitation via the anaerobic oxidation of biogenic methane. Abundant and well-preserved fauna include multiple species of bivalves, worm tubes, ammonites and gastropods. Methane seepage is calculated to have lasted ~500,000 years and was brought about by a tensional stress regime as well as salt diapirism related faulting. ... |
format |
Master Thesis |
author |
Williscroft, Krista |
author_facet |
Williscroft, Krista |
author_sort |
Williscroft, Krista |
title |
Early Cretaceous methane seepage system and associated carbonates, biota and geochemistry, Sverdrup Basin, Ellef Ringnes Island, Nunavut ... |
title_short |
Early Cretaceous methane seepage system and associated carbonates, biota and geochemistry, Sverdrup Basin, Ellef Ringnes Island, Nunavut ... |
title_full |
Early Cretaceous methane seepage system and associated carbonates, biota and geochemistry, Sverdrup Basin, Ellef Ringnes Island, Nunavut ... |
title_fullStr |
Early Cretaceous methane seepage system and associated carbonates, biota and geochemistry, Sverdrup Basin, Ellef Ringnes Island, Nunavut ... |
title_full_unstemmed |
Early Cretaceous methane seepage system and associated carbonates, biota and geochemistry, Sverdrup Basin, Ellef Ringnes Island, Nunavut ... |
title_sort |
early cretaceous methane seepage system and associated carbonates, biota and geochemistry, sverdrup basin, ellef ringnes island, nunavut ... |
publisher |
Graduate Studies |
publishDate |
2013 |
url |
https://dx.doi.org/10.11575/prism/25767 https://prism.ucalgary.ca/handle/11023/1102 |
genre |
arctic methane Arctic Ellef Ringnes Island Nunavut sverdrup basin |
genre_facet |
arctic methane Arctic Ellef Ringnes Island Nunavut sverdrup basin |
op_rights |
University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission. |
op_doi |
https://doi.org/10.11575/prism/25767 |
_version_ |
1781693776784261120 |