Correlating Middle Cretaceous Palynological Records from the Canadian High Arctic Based on a Section from the Sverdrup Basin and Samples from the Eclipse Trough
Quantitative palynological analyses undertaken on the middle Cretaceous Hassel Formation of the Sverdrup Basin and reputedly equivalent rocks from the Eclipse Trough, about 850 km east, provide convincing evidence that they are coeval and of Late Albian—Cenomanian age. We base this conclusion on sta...
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AASP: The Palynological Society
2012
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Online Access: | https://doi.org/10.1080/01916122.2012.670411 |
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ftbioone:10.1080/01916122.2012.670411 2024-06-02T08:01:25+00:00 Correlating Middle Cretaceous Palynological Records from the Canadian High Arctic Based on a Section from the Sverdrup Basin and Samples from the Eclipse Trough Jennifer M. Galloway Arthur R. Sweet Adam Pugh Claudia J. Schröder-Adams Graeme T. Swindles James W. Haggart Ashton F. Embry Jennifer M. Galloway Arthur R. Sweet Adam Pugh Claudia J. Schröder-Adams Graeme T. Swindles James W. Haggart Ashton F. Embry world 2012-12-01 text/HTML https://doi.org/10.1080/01916122.2012.670411 en eng AASP: The Palynological Society doi:10.1080/01916122.2012.670411 All rights reserved. https://doi.org/10.1080/01916122.2012.670411 Text 2012 ftbioone https://doi.org/10.1080/01916122.2012.670411 2024-05-07T00:50:35Z Quantitative palynological analyses undertaken on the middle Cretaceous Hassel Formation of the Sverdrup Basin and reputedly equivalent rocks from the Eclipse Trough, about 850 km east, provide convincing evidence that they are coeval and of Late Albian—Cenomanian age. We base this conclusion on statistical definition of two palynomorph populations that occur in both spot samples from the Eclipse Trough and in samples from a measured section at Hoodoo Dome, Ellef Ringnes Island in the central Sverdrup Basin, which demonstrate a broad correlation to previously reported palynofloras from North America. By applying ordination techniques, we demonstrate that the range of variability of palynomorph composition of samples from the reputed Hassel Formation in the Eclipse Trough are within the range of variability defined for samples from the Hassel Formation, Hoodoo Dome. Comparable proportions of dicotyledonous angiosperm pollen characterize samples from both localities, but diversity and relative abundance are lower in both of the Canadian Arctic deposits than in more southern Middle and Late Albian—Cenomanian-aged rocks of North America. To explain this, we propose that restricted angiosperm diversity and continued dominance of gymnosperms and ferns into the Cenomanian in the Canadian Arctic reflect relatively cool continental climate conditions or barriers to migration, such as the Western Interior Seaway. Text Arctic Ellef Ringnes Island sverdrup basin BioOne Online Journals Arctic Hassel ENVELOPE(-164.467,-164.467,-86.467,-86.467) Ellef Ringnes Island ENVELOPE(-102.256,-102.256,78.502,78.502) Hoodoo Dome ENVELOPE(-100.089,-100.089,78.135,78.135) Palynology 36 2 277 302 |
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Open Polar |
collection |
BioOne Online Journals |
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ftbioone |
language |
English |
description |
Quantitative palynological analyses undertaken on the middle Cretaceous Hassel Formation of the Sverdrup Basin and reputedly equivalent rocks from the Eclipse Trough, about 850 km east, provide convincing evidence that they are coeval and of Late Albian—Cenomanian age. We base this conclusion on statistical definition of two palynomorph populations that occur in both spot samples from the Eclipse Trough and in samples from a measured section at Hoodoo Dome, Ellef Ringnes Island in the central Sverdrup Basin, which demonstrate a broad correlation to previously reported palynofloras from North America. By applying ordination techniques, we demonstrate that the range of variability of palynomorph composition of samples from the reputed Hassel Formation in the Eclipse Trough are within the range of variability defined for samples from the Hassel Formation, Hoodoo Dome. Comparable proportions of dicotyledonous angiosperm pollen characterize samples from both localities, but diversity and relative abundance are lower in both of the Canadian Arctic deposits than in more southern Middle and Late Albian—Cenomanian-aged rocks of North America. To explain this, we propose that restricted angiosperm diversity and continued dominance of gymnosperms and ferns into the Cenomanian in the Canadian Arctic reflect relatively cool continental climate conditions or barriers to migration, such as the Western Interior Seaway. |
author2 |
Jennifer M. Galloway Arthur R. Sweet Adam Pugh Claudia J. Schröder-Adams Graeme T. Swindles James W. Haggart Ashton F. Embry |
format |
Text |
author |
Jennifer M. Galloway Arthur R. Sweet Adam Pugh Claudia J. Schröder-Adams Graeme T. Swindles James W. Haggart Ashton F. Embry |
spellingShingle |
Jennifer M. Galloway Arthur R. Sweet Adam Pugh Claudia J. Schröder-Adams Graeme T. Swindles James W. Haggart Ashton F. Embry Correlating Middle Cretaceous Palynological Records from the Canadian High Arctic Based on a Section from the Sverdrup Basin and Samples from the Eclipse Trough |
author_facet |
Jennifer M. Galloway Arthur R. Sweet Adam Pugh Claudia J. Schröder-Adams Graeme T. Swindles James W. Haggart Ashton F. Embry |
author_sort |
Jennifer M. Galloway |
title |
Correlating Middle Cretaceous Palynological Records from the Canadian High Arctic Based on a Section from the Sverdrup Basin and Samples from the Eclipse Trough |
title_short |
Correlating Middle Cretaceous Palynological Records from the Canadian High Arctic Based on a Section from the Sverdrup Basin and Samples from the Eclipse Trough |
title_full |
Correlating Middle Cretaceous Palynological Records from the Canadian High Arctic Based on a Section from the Sverdrup Basin and Samples from the Eclipse Trough |
title_fullStr |
Correlating Middle Cretaceous Palynological Records from the Canadian High Arctic Based on a Section from the Sverdrup Basin and Samples from the Eclipse Trough |
title_full_unstemmed |
Correlating Middle Cretaceous Palynological Records from the Canadian High Arctic Based on a Section from the Sverdrup Basin and Samples from the Eclipse Trough |
title_sort |
correlating middle cretaceous palynological records from the canadian high arctic based on a section from the sverdrup basin and samples from the eclipse trough |
publisher |
AASP: The Palynological Society |
publishDate |
2012 |
url |
https://doi.org/10.1080/01916122.2012.670411 |
op_coverage |
world |
long_lat |
ENVELOPE(-164.467,-164.467,-86.467,-86.467) ENVELOPE(-102.256,-102.256,78.502,78.502) ENVELOPE(-100.089,-100.089,78.135,78.135) |
geographic |
Arctic Hassel Ellef Ringnes Island Hoodoo Dome |
geographic_facet |
Arctic Hassel Ellef Ringnes Island Hoodoo Dome |
genre |
Arctic Ellef Ringnes Island sverdrup basin |
genre_facet |
Arctic Ellef Ringnes Island sverdrup basin |
op_source |
https://doi.org/10.1080/01916122.2012.670411 |
op_relation |
doi:10.1080/01916122.2012.670411 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1080/01916122.2012.670411 |
container_title |
Palynology |
container_volume |
36 |
container_issue |
2 |
container_start_page |
277 |
op_container_end_page |
302 |
_version_ |
1800745774374453248 |