Late Cretaceous (Cenomanian to Campanian) Dinoflagellate Cyst Assemblages and Palaeoproductivity Signals from the Kanguk Formation, Sverdrup Basin, Nunavut, Canada
The response of the Polar Sea to Cretaceous carbon perturbations is poorly understood and palaeotemperature data from the Arctic are limited. To understand high latitude palaeoceanographic dynamics, dinocyst assemblages were collected from a composite Cenomanian to Campanian section from the Bastion...
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ftcarletonuniv:oai:curve.carleton.ca:32564 2023-05-15T15:03:19+02:00 Late Cretaceous (Cenomanian to Campanian) Dinoflagellate Cyst Assemblages and Palaeoproductivity Signals from the Kanguk Formation, Sverdrup Basin, Nunavut, Canada Froude, Gregory 2018 https://curve.carleton.ca/8dc90614-d58e-46d5-9192-20c890bc999b https://doi.org/10.22215/etd/2018-13379 http://catalogue.library.carleton.ca/record=b4528578 unknown https://curve.carleton.ca/8dc90614-d58e-46d5-9192-20c890bc999b https://doi.org/10.22215/etd/2018-13379 http://catalogue.library.carleton.ca/record=b4528578 Thesis/Dissertation 2018 ftcarletonuniv https://doi.org/10.22215/etd/2018-13379 2022-01-23T08:09:49Z The response of the Polar Sea to Cretaceous carbon perturbations is poorly understood and palaeotemperature data from the Arctic are limited. To understand high latitude palaeoceanographic dynamics, dinocyst assemblages were collected from a composite Cenomanian to Campanian section from the Bastion Ridge and Kanguk formations within the Sverdrup Basin at Glacier Fiord, Axel Heiberg Island and Slidre Fiord, Ellesmere Island. Dinocyst assemblages were compared to carbon isotope and benthic foraminiferal age data indicating that age ranges for several Late Cretaceous dinocyst taxa need regional revision. At Glacier Fiord a turnover in dinocyst assemblages reveal a change from a brackish to marine palaeoenvironmental change before the onset of OAE 2. A correlation between δ13Corg, peridiniod dinoflagellate cysts and cooling global sea surface temperatures indicate an increase in palaeoproductivity during a Coniacian to Campanian cooling trend. Three dinocyst biozonations are proposed for the Sverdrup Basin. Thesis Arctic Axel Heiberg Island Ellesmere Island Foraminifera* glacier* Nunavut sverdrup basin CURVE - Carleton University Research Virtual Environment Arctic Nunavut Ellesmere Island Canada Heiberg ENVELOPE(13.964,13.964,66.424,66.424) Axel Heiberg Island ENVELOPE(-91.001,-91.001,79.752,79.752) The Bastion ENVELOPE(-136.705,-136.705,67.655,67.655) Bastion Ridge ENVELOPE(-90.801,-90.801,79.352,79.352) Glacier Fiord ENVELOPE(-89.483,-89.483,78.369,78.369) Slidre Fiord ENVELOPE(-86.249,-86.249,80.002,80.002) |
institution |
Open Polar |
collection |
CURVE - Carleton University Research Virtual Environment |
op_collection_id |
ftcarletonuniv |
language |
unknown |
description |
The response of the Polar Sea to Cretaceous carbon perturbations is poorly understood and palaeotemperature data from the Arctic are limited. To understand high latitude palaeoceanographic dynamics, dinocyst assemblages were collected from a composite Cenomanian to Campanian section from the Bastion Ridge and Kanguk formations within the Sverdrup Basin at Glacier Fiord, Axel Heiberg Island and Slidre Fiord, Ellesmere Island. Dinocyst assemblages were compared to carbon isotope and benthic foraminiferal age data indicating that age ranges for several Late Cretaceous dinocyst taxa need regional revision. At Glacier Fiord a turnover in dinocyst assemblages reveal a change from a brackish to marine palaeoenvironmental change before the onset of OAE 2. A correlation between δ13Corg, peridiniod dinoflagellate cysts and cooling global sea surface temperatures indicate an increase in palaeoproductivity during a Coniacian to Campanian cooling trend. Three dinocyst biozonations are proposed for the Sverdrup Basin. |
format |
Thesis |
author |
Froude, Gregory |
spellingShingle |
Froude, Gregory Late Cretaceous (Cenomanian to Campanian) Dinoflagellate Cyst Assemblages and Palaeoproductivity Signals from the Kanguk Formation, Sverdrup Basin, Nunavut, Canada |
author_facet |
Froude, Gregory |
author_sort |
Froude, Gregory |
title |
Late Cretaceous (Cenomanian to Campanian) Dinoflagellate Cyst Assemblages and Palaeoproductivity Signals from the Kanguk Formation, Sverdrup Basin, Nunavut, Canada |
title_short |
Late Cretaceous (Cenomanian to Campanian) Dinoflagellate Cyst Assemblages and Palaeoproductivity Signals from the Kanguk Formation, Sverdrup Basin, Nunavut, Canada |
title_full |
Late Cretaceous (Cenomanian to Campanian) Dinoflagellate Cyst Assemblages and Palaeoproductivity Signals from the Kanguk Formation, Sverdrup Basin, Nunavut, Canada |
title_fullStr |
Late Cretaceous (Cenomanian to Campanian) Dinoflagellate Cyst Assemblages and Palaeoproductivity Signals from the Kanguk Formation, Sverdrup Basin, Nunavut, Canada |
title_full_unstemmed |
Late Cretaceous (Cenomanian to Campanian) Dinoflagellate Cyst Assemblages and Palaeoproductivity Signals from the Kanguk Formation, Sverdrup Basin, Nunavut, Canada |
title_sort |
late cretaceous (cenomanian to campanian) dinoflagellate cyst assemblages and palaeoproductivity signals from the kanguk formation, sverdrup basin, nunavut, canada |
publishDate |
2018 |
url |
https://curve.carleton.ca/8dc90614-d58e-46d5-9192-20c890bc999b https://doi.org/10.22215/etd/2018-13379 http://catalogue.library.carleton.ca/record=b4528578 |
long_lat |
ENVELOPE(13.964,13.964,66.424,66.424) ENVELOPE(-91.001,-91.001,79.752,79.752) ENVELOPE(-136.705,-136.705,67.655,67.655) ENVELOPE(-90.801,-90.801,79.352,79.352) ENVELOPE(-89.483,-89.483,78.369,78.369) ENVELOPE(-86.249,-86.249,80.002,80.002) |
geographic |
Arctic Nunavut Ellesmere Island Canada Heiberg Axel Heiberg Island The Bastion Bastion Ridge Glacier Fiord Slidre Fiord |
geographic_facet |
Arctic Nunavut Ellesmere Island Canada Heiberg Axel Heiberg Island The Bastion Bastion Ridge Glacier Fiord Slidre Fiord |
genre |
Arctic Axel Heiberg Island Ellesmere Island Foraminifera* glacier* Nunavut sverdrup basin |
genre_facet |
Arctic Axel Heiberg Island Ellesmere Island Foraminifera* glacier* Nunavut sverdrup basin |
op_relation |
https://curve.carleton.ca/8dc90614-d58e-46d5-9192-20c890bc999b https://doi.org/10.22215/etd/2018-13379 http://catalogue.library.carleton.ca/record=b4528578 |
op_doi |
https://doi.org/10.22215/etd/2018-13379 |
_version_ |
1766335172661215232 |