High latitude meteoric δ 18 O compositions from the Cenomanian Bastion Ridge Formation, Axel Heiberg Island, Canadian Arctic Archipelago: A palaeoclimate proxy from the Sverdrup Basin
Stable isotope analyses of a siderite-cemented siltstone from the Cenomanian Bastion Ridge Formation, Axel Heiberg Island, Canada, produce a range of δ 18 O values of -21.9 to -17 18.4‰ VPDB, and δ 13 C values ranging from 2.0 to 4.4‰ VPDB. A meteoric siderite line of -18.95 ± 0.33‰ VPDB is calculat...
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Geological Society of London
2019
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Online Access: | https://dx.doi.org/10.6084/m9.figshare.c.4703885 https://geolsoc.figshare.com/collections/High_latitude_meteoric_sup_18_sup_O_compositions_from_the_Cenomanian_Bastion_Ridge_Formation_Axel_Heiberg_Island_Canadian_Arctic_Archipelago_A_palaeoclimate_proxy_from_the_Sverdrup_Basin/4703885 |
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ftdatacite:10.6084/m9.figshare.c.4703885 2023-05-15T14:28:54+02:00 High latitude meteoric δ 18 O compositions from the Cenomanian Bastion Ridge Formation, Axel Heiberg Island, Canadian Arctic Archipelago: A palaeoclimate proxy from the Sverdrup Basin Ross, Jeffrey B. G. A. Ludvigson C. J. Schröder-Adams M. B. Suarez 2019 https://dx.doi.org/10.6084/m9.figshare.c.4703885 https://geolsoc.figshare.com/collections/High_latitude_meteoric_sup_18_sup_O_compositions_from_the_Cenomanian_Bastion_Ridge_Formation_Axel_Heiberg_Island_Canadian_Arctic_Archipelago_A_palaeoclimate_proxy_from_the_Sverdrup_Basin/4703885 unknown Geological Society of London https://dx.doi.org/10.1144/sp498-2018-134 CC BY 4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Geology FOS Earth and related environmental sciences Collection article 2019 ftdatacite https://doi.org/10.6084/m9.figshare.c.4703885 https://doi.org/10.1144/sp498-2018-134 2021-11-05T12:55:41Z Stable isotope analyses of a siderite-cemented siltstone from the Cenomanian Bastion Ridge Formation, Axel Heiberg Island, Canada, produce a range of δ 18 O values of -21.9 to -17 18.4‰ VPDB, and δ 13 C values ranging from 2.0 to 4.4‰ VPDB. A meteoric siderite line of -18.95 ± 0.33‰ VPDB is calculated from siderite cements of the authigenic component. At estimated palaeolatitude of 68-72° N and palaeotemperature range from 12.6 to 13.7°C, the calculated δ 18 O range of palaeoprecipitation is -23.3 to -23.0‰ VSMOW. This result is compatible with other published meteoric water δ 18 O datasets from Cretaceous Arctic studies, but are near the lower end of this range of estimated δ 18 O values. The modern δ 18 O empirical relationship of Dansgaard and Earth System models simulating meteoric δ 18 O values do not yield results for palaeopolar regions that match proxy δ 18 O datasets. Orographic effects of contemporaneous mountain belts, and seasonal biases in groundwater recharge have been proposed to explain this paradox regarding depleted meteoric water δ 18 O values from proxy data in greenhouse worlds. Evidence for local to regional orographic effects and alpine snowmelt biasing groundwater recharge is lacking for the Sverdrup Basin deposits, further indicating that the Dansgaard relationship does not apply to ancient greenhouse worlds. Article in Journal/Newspaper Arctic Archipelago Arctic Axel Heiberg Island Canadian Arctic Archipelago sverdrup basin DataCite Metadata Store (German National Library of Science and Technology) Arctic Canadian Arctic Archipelago Canada Heiberg ENVELOPE(13.964,13.964,66.424,66.424) Axel Heiberg Island ENVELOPE(-91.001,-91.001,79.752,79.752) Bastion Ridge ENVELOPE(-90.801,-90.801,79.352,79.352) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Geology FOS Earth and related environmental sciences |
spellingShingle |
Geology FOS Earth and related environmental sciences Ross, Jeffrey B. G. A. Ludvigson C. J. Schröder-Adams M. B. Suarez High latitude meteoric δ 18 O compositions from the Cenomanian Bastion Ridge Formation, Axel Heiberg Island, Canadian Arctic Archipelago: A palaeoclimate proxy from the Sverdrup Basin |
topic_facet |
Geology FOS Earth and related environmental sciences |
description |
Stable isotope analyses of a siderite-cemented siltstone from the Cenomanian Bastion Ridge Formation, Axel Heiberg Island, Canada, produce a range of δ 18 O values of -21.9 to -17 18.4‰ VPDB, and δ 13 C values ranging from 2.0 to 4.4‰ VPDB. A meteoric siderite line of -18.95 ± 0.33‰ VPDB is calculated from siderite cements of the authigenic component. At estimated palaeolatitude of 68-72° N and palaeotemperature range from 12.6 to 13.7°C, the calculated δ 18 O range of palaeoprecipitation is -23.3 to -23.0‰ VSMOW. This result is compatible with other published meteoric water δ 18 O datasets from Cretaceous Arctic studies, but are near the lower end of this range of estimated δ 18 O values. The modern δ 18 O empirical relationship of Dansgaard and Earth System models simulating meteoric δ 18 O values do not yield results for palaeopolar regions that match proxy δ 18 O datasets. Orographic effects of contemporaneous mountain belts, and seasonal biases in groundwater recharge have been proposed to explain this paradox regarding depleted meteoric water δ 18 O values from proxy data in greenhouse worlds. Evidence for local to regional orographic effects and alpine snowmelt biasing groundwater recharge is lacking for the Sverdrup Basin deposits, further indicating that the Dansgaard relationship does not apply to ancient greenhouse worlds. |
format |
Article in Journal/Newspaper |
author |
Ross, Jeffrey B. G. A. Ludvigson C. J. Schröder-Adams M. B. Suarez |
author_facet |
Ross, Jeffrey B. G. A. Ludvigson C. J. Schröder-Adams M. B. Suarez |
author_sort |
Ross, Jeffrey B. |
title |
High latitude meteoric δ 18 O compositions from the Cenomanian Bastion Ridge Formation, Axel Heiberg Island, Canadian Arctic Archipelago: A palaeoclimate proxy from the Sverdrup Basin |
title_short |
High latitude meteoric δ 18 O compositions from the Cenomanian Bastion Ridge Formation, Axel Heiberg Island, Canadian Arctic Archipelago: A palaeoclimate proxy from the Sverdrup Basin |
title_full |
High latitude meteoric δ 18 O compositions from the Cenomanian Bastion Ridge Formation, Axel Heiberg Island, Canadian Arctic Archipelago: A palaeoclimate proxy from the Sverdrup Basin |
title_fullStr |
High latitude meteoric δ 18 O compositions from the Cenomanian Bastion Ridge Formation, Axel Heiberg Island, Canadian Arctic Archipelago: A palaeoclimate proxy from the Sverdrup Basin |
title_full_unstemmed |
High latitude meteoric δ 18 O compositions from the Cenomanian Bastion Ridge Formation, Axel Heiberg Island, Canadian Arctic Archipelago: A palaeoclimate proxy from the Sverdrup Basin |
title_sort |
high latitude meteoric δ 18 o compositions from the cenomanian bastion ridge formation, axel heiberg island, canadian arctic archipelago: a palaeoclimate proxy from the sverdrup basin |
publisher |
Geological Society of London |
publishDate |
2019 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.4703885 https://geolsoc.figshare.com/collections/High_latitude_meteoric_sup_18_sup_O_compositions_from_the_Cenomanian_Bastion_Ridge_Formation_Axel_Heiberg_Island_Canadian_Arctic_Archipelago_A_palaeoclimate_proxy_from_the_Sverdrup_Basin/4703885 |
long_lat |
ENVELOPE(13.964,13.964,66.424,66.424) ENVELOPE(-91.001,-91.001,79.752,79.752) ENVELOPE(-90.801,-90.801,79.352,79.352) |
geographic |
Arctic Canadian Arctic Archipelago Canada Heiberg Axel Heiberg Island Bastion Ridge |
geographic_facet |
Arctic Canadian Arctic Archipelago Canada Heiberg Axel Heiberg Island Bastion Ridge |
genre |
Arctic Archipelago Arctic Axel Heiberg Island Canadian Arctic Archipelago sverdrup basin |
genre_facet |
Arctic Archipelago Arctic Axel Heiberg Island Canadian Arctic Archipelago sverdrup basin |
op_relation |
https://dx.doi.org/10.1144/sp498-2018-134 |
op_rights |
CC BY 4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.4703885 https://doi.org/10.1144/sp498-2018-134 |
_version_ |
1766303037969661952 |