Use of multiple oxygen isotope proxies for elucidating Arctic Cretaceous palaeo-hydrology
Stable oxygen isotope analysis of siderite and dinosaur tooth enamel phosphate from the Campanian–Maastrichtian Prince Creek Formation, Alaska, USA, are analysed to determine the palaeohydrology of the ancient Colville Basin north of the Ancestral Brooks Range. δ 18 O of freshwater siderites relativ...
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ftgeosoclonfig:oai:figshare.com:article/3453407 2023-05-15T15:10:26+02:00 Use of multiple oxygen isotope proxies for elucidating Arctic Cretaceous palaeo-hydrology Celina A. Suarez G. A. Ludvigson L. A. Gonzalez A. R. Fiorillo P. P. Flaig P. J. McCarthy 2016-06-21T11:23:04Z https://doi.org/10.6084/m9.figshare.3453407.v1 https://figshare.com/articles/Use_of_multiple_oxygen_isotope_proxies_for_elucidating_Arctic_Cretaceous_palaeo-hydrology/3453407 unknown doi:10.6084/m9.figshare.3453407.v1 https://figshare.com/articles/Use_of_multiple_oxygen_isotope_proxies_for_elucidating_Arctic_Cretaceous_palaeo-hydrology/3453407 CC BY 4.0 CC-BY Geology 6.3 Ancestral Brooks Range oxygen isotope proxies Cretaceous body temperatures Brooks Range Ingested water compositions proxy circulation models siderite δ 18 O dinosaur tooth enamel phosphate dinosaur teeth corroborating evidence rainout effects hydrological cycle USA Colville Basin Dataset 2016 ftgeosoclonfig https://doi.org/10.6084/m9.figshare.3453407.v1 2020-02-21T07:24:16Z Stable oxygen isotope analysis of siderite and dinosaur tooth enamel phosphate from the Campanian–Maastrichtian Prince Creek Formation, Alaska, USA, are analysed to determine the palaeohydrology of the ancient Colville Basin north of the Ancestral Brooks Range. δ 18 O of freshwater siderites relative to V-PDB ranges between −14.86 and −16.21‰. Dinosaur tooth enamel δ 18 O from three different sites (Kikak–Tegoseak, Pediomys Point, Liscomb) range between +3.9‰ and +10.2.0‰. δ 18 O meteoric water are calculated from δ 18 O siderite that formed at seasonal temperatures ranging from −2 to 14.5 °C, with a mean annual temperature of 6.3 °C. At 6.3 °C, the δ 18 O w calculated from siderite ranged between −22.23 and −20.89‰ V-SMOW. Ingested water compositions are estimated from dinosaur teeth assuming body temperatures of 37 °C and local relative humidity of 77.5%, resulting in values ranging from −28.7 to −20.4‰ V-SMOW, suggesting consumption of meteoric water and orographically depleted runoff from the Brooks Range. The ranges in calculated δ 18 O meteoric water are compatible between the two proxies, and are mutually corroborating evidence of extremely 18 O-depleted precipitation at high latitudes during the Late Cretaceous relative to those generated using general circulation models. This depletion is proposed to result from increased rainout effects from an intensified hydrological cycle, which probably played a role in sustaining polar warmth. Dataset Arctic Brooks Range Alaska Geological Society of London: Figshare Arctic Prince Creek ENVELOPE(-38.067,-38.067,-54.017,-54.017) |
institution |
Open Polar |
collection |
Geological Society of London: Figshare |
op_collection_id |
ftgeosoclonfig |
language |
unknown |
topic |
Geology 6.3 Ancestral Brooks Range oxygen isotope proxies Cretaceous body temperatures Brooks Range Ingested water compositions proxy circulation models siderite δ 18 O dinosaur tooth enamel phosphate dinosaur teeth corroborating evidence rainout effects hydrological cycle USA Colville Basin |
spellingShingle |
Geology 6.3 Ancestral Brooks Range oxygen isotope proxies Cretaceous body temperatures Brooks Range Ingested water compositions proxy circulation models siderite δ 18 O dinosaur tooth enamel phosphate dinosaur teeth corroborating evidence rainout effects hydrological cycle USA Colville Basin Celina A. Suarez G. A. Ludvigson L. A. Gonzalez A. R. Fiorillo P. P. Flaig P. J. McCarthy Use of multiple oxygen isotope proxies for elucidating Arctic Cretaceous palaeo-hydrology |
topic_facet |
Geology 6.3 Ancestral Brooks Range oxygen isotope proxies Cretaceous body temperatures Brooks Range Ingested water compositions proxy circulation models siderite δ 18 O dinosaur tooth enamel phosphate dinosaur teeth corroborating evidence rainout effects hydrological cycle USA Colville Basin |
description |
Stable oxygen isotope analysis of siderite and dinosaur tooth enamel phosphate from the Campanian–Maastrichtian Prince Creek Formation, Alaska, USA, are analysed to determine the palaeohydrology of the ancient Colville Basin north of the Ancestral Brooks Range. δ 18 O of freshwater siderites relative to V-PDB ranges between −14.86 and −16.21‰. Dinosaur tooth enamel δ 18 O from three different sites (Kikak–Tegoseak, Pediomys Point, Liscomb) range between +3.9‰ and +10.2.0‰. δ 18 O meteoric water are calculated from δ 18 O siderite that formed at seasonal temperatures ranging from −2 to 14.5 °C, with a mean annual temperature of 6.3 °C. At 6.3 °C, the δ 18 O w calculated from siderite ranged between −22.23 and −20.89‰ V-SMOW. Ingested water compositions are estimated from dinosaur teeth assuming body temperatures of 37 °C and local relative humidity of 77.5%, resulting in values ranging from −28.7 to −20.4‰ V-SMOW, suggesting consumption of meteoric water and orographically depleted runoff from the Brooks Range. The ranges in calculated δ 18 O meteoric water are compatible between the two proxies, and are mutually corroborating evidence of extremely 18 O-depleted precipitation at high latitudes during the Late Cretaceous relative to those generated using general circulation models. This depletion is proposed to result from increased rainout effects from an intensified hydrological cycle, which probably played a role in sustaining polar warmth. |
format |
Dataset |
author |
Celina A. Suarez G. A. Ludvigson L. A. Gonzalez A. R. Fiorillo P. P. Flaig P. J. McCarthy |
author_facet |
Celina A. Suarez G. A. Ludvigson L. A. Gonzalez A. R. Fiorillo P. P. Flaig P. J. McCarthy |
author_sort |
Celina A. Suarez |
title |
Use of multiple oxygen isotope proxies for elucidating Arctic Cretaceous palaeo-hydrology |
title_short |
Use of multiple oxygen isotope proxies for elucidating Arctic Cretaceous palaeo-hydrology |
title_full |
Use of multiple oxygen isotope proxies for elucidating Arctic Cretaceous palaeo-hydrology |
title_fullStr |
Use of multiple oxygen isotope proxies for elucidating Arctic Cretaceous palaeo-hydrology |
title_full_unstemmed |
Use of multiple oxygen isotope proxies for elucidating Arctic Cretaceous palaeo-hydrology |
title_sort |
use of multiple oxygen isotope proxies for elucidating arctic cretaceous palaeo-hydrology |
publishDate |
2016 |
url |
https://doi.org/10.6084/m9.figshare.3453407.v1 https://figshare.com/articles/Use_of_multiple_oxygen_isotope_proxies_for_elucidating_Arctic_Cretaceous_palaeo-hydrology/3453407 |
long_lat |
ENVELOPE(-38.067,-38.067,-54.017,-54.017) |
geographic |
Arctic Prince Creek |
geographic_facet |
Arctic Prince Creek |
genre |
Arctic Brooks Range Alaska |
genre_facet |
Arctic Brooks Range Alaska |
op_relation |
doi:10.6084/m9.figshare.3453407.v1 https://figshare.com/articles/Use_of_multiple_oxygen_isotope_proxies_for_elucidating_Arctic_Cretaceous_palaeo-hydrology/3453407 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.3453407.v1 |
_version_ |
1766341470312202240 |