The Late Cretaceous Boreal Sea: Biostratigraphy and Paleoenvironmental Analysis of the Smoking Hills and Mason River formations in the Horton River area, Northwest Territories, Canada
Micropaleontological and geochemical analyses of the Upper Cretaceous Smoking Hills and Mason River formations in the Anderson Basin, northern mainland coast of Arctic Canada, were used to evaluate the marine and terrestrial environmental conditions that prevailed in the southern extent of the Borea...
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Graduate Studies
2024
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ftunivcalgary:oai:prism.ucalgary.ca:1880/117962 2024-02-11T10:00:55+01:00 The Late Cretaceous Boreal Sea: Biostratigraphy and Paleoenvironmental Analysis of the Smoking Hills and Mason River formations in the Horton River area, Northwest Territories, Canada Diaz-Tamayo, Juan F. Pedersen, Per K. Galloway, Jennifer M. Dutchak, Alex Bringué, Manuel Fowler, Martin Henderson, Charles 2024-01-11 application/pdf application/vnd.ms-excel https://hdl.handle.net/1880/117962 en eng Graduate Studies University of Calgary Diaz-Tamayo, J. F. (2024). The Late Cretaceous Boreal Sea: Biostratigraphy and paleoenvironmental analysis of the Smoking Hills and Mason River formations in the Horton River area, Northwest Territories, Canada (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. https://hdl.handle.net/1880/117962 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. Late Cretaceous Siliceous micofossils Boreal Sea Micropaleontology Biomarkers Smoking Hills and Mason River formations Canadian Arctic Geochemistry Geology Paleontology doctoral thesis 2024 ftunivcalgary 2024-01-21T18:44:15Z Micropaleontological and geochemical analyses of the Upper Cretaceous Smoking Hills and Mason River formations in the Anderson Basin, northern mainland coast of Arctic Canada, were used to evaluate the marine and terrestrial environmental conditions that prevailed in the southern extent of the Boreal Sea at the end of the Cretaceous. The radiolarian biozonation proposed in this study and its correlation with diatom, silicoflagellate and palynological biozones previously reported in the same area indicate a late Santonian-middle Campanian age for the Smoking Hills Formation and a middle Campanian-early Maastrichtian age for the Mason River Formation. The Smoking Hills Formation was deposited during marine transgression and water column stratification, and planktic communities were dominated by dinoflagellates, red algae, green algae and probably diatoms and silicoflagellates. Bottom waters were predominantly anoxic-euxinic during the deposition of this unit, with short intervals of ventilation as evidenced by the presence of benthic foraminifera. Terrigenous input increased considerably during the deposition of the Mason River Formation and fueled marine primary productivity. Marine planktic communities were dominated by diatoms, silicoflagellates, and probably red and green algae. Bottom waters were fully oxygenated and dominated by sponges. Total concentrations of polycyclic aromatic hydrocarbons indicate that angiosperms diversified during the early Maastrichtian and contributed considerably to the organic matter preserved in the Mason River Formation. These compounds also show evidence of increased wildfire activity and erosion rates in continental areas, increasing the amount of soil-derived organic matter in the marine basin. The integration of micropaleontological with elemental and organic geochemical data presented in this study provides new insight into the response of planktic communities to environmental perturbations in a Cretaceous Arctic shelf ecosystem. Additionally, the findings provided here, ... Doctoral or Postdoctoral Thesis Arctic Foraminifera* Horton River Northwest Territories PRISM - University of Calgary Digital Repository Arctic Northwest Territories Canada Smoking Hills ENVELOPE(-126.638,-126.638,69.559,69.559) Horton River ENVELOPE(-126.872,-126.872,69.942,69.942) Mason River ENVELOPE(-128.317,-128.317,69.939,69.939) |
institution |
Open Polar |
collection |
PRISM - University of Calgary Digital Repository |
op_collection_id |
ftunivcalgary |
language |
English |
topic |
Late Cretaceous Siliceous micofossils Boreal Sea Micropaleontology Biomarkers Smoking Hills and Mason River formations Canadian Arctic Geochemistry Geology Paleontology |
spellingShingle |
Late Cretaceous Siliceous micofossils Boreal Sea Micropaleontology Biomarkers Smoking Hills and Mason River formations Canadian Arctic Geochemistry Geology Paleontology Diaz-Tamayo, Juan F. The Late Cretaceous Boreal Sea: Biostratigraphy and Paleoenvironmental Analysis of the Smoking Hills and Mason River formations in the Horton River area, Northwest Territories, Canada |
topic_facet |
Late Cretaceous Siliceous micofossils Boreal Sea Micropaleontology Biomarkers Smoking Hills and Mason River formations Canadian Arctic Geochemistry Geology Paleontology |
description |
Micropaleontological and geochemical analyses of the Upper Cretaceous Smoking Hills and Mason River formations in the Anderson Basin, northern mainland coast of Arctic Canada, were used to evaluate the marine and terrestrial environmental conditions that prevailed in the southern extent of the Boreal Sea at the end of the Cretaceous. The radiolarian biozonation proposed in this study and its correlation with diatom, silicoflagellate and palynological biozones previously reported in the same area indicate a late Santonian-middle Campanian age for the Smoking Hills Formation and a middle Campanian-early Maastrichtian age for the Mason River Formation. The Smoking Hills Formation was deposited during marine transgression and water column stratification, and planktic communities were dominated by dinoflagellates, red algae, green algae and probably diatoms and silicoflagellates. Bottom waters were predominantly anoxic-euxinic during the deposition of this unit, with short intervals of ventilation as evidenced by the presence of benthic foraminifera. Terrigenous input increased considerably during the deposition of the Mason River Formation and fueled marine primary productivity. Marine planktic communities were dominated by diatoms, silicoflagellates, and probably red and green algae. Bottom waters were fully oxygenated and dominated by sponges. Total concentrations of polycyclic aromatic hydrocarbons indicate that angiosperms diversified during the early Maastrichtian and contributed considerably to the organic matter preserved in the Mason River Formation. These compounds also show evidence of increased wildfire activity and erosion rates in continental areas, increasing the amount of soil-derived organic matter in the marine basin. The integration of micropaleontological with elemental and organic geochemical data presented in this study provides new insight into the response of planktic communities to environmental perturbations in a Cretaceous Arctic shelf ecosystem. Additionally, the findings provided here, ... |
author2 |
Pedersen, Per K. Galloway, Jennifer M. Dutchak, Alex Bringué, Manuel Fowler, Martin Henderson, Charles |
format |
Doctoral or Postdoctoral Thesis |
author |
Diaz-Tamayo, Juan F. |
author_facet |
Diaz-Tamayo, Juan F. |
author_sort |
Diaz-Tamayo, Juan F. |
title |
The Late Cretaceous Boreal Sea: Biostratigraphy and Paleoenvironmental Analysis of the Smoking Hills and Mason River formations in the Horton River area, Northwest Territories, Canada |
title_short |
The Late Cretaceous Boreal Sea: Biostratigraphy and Paleoenvironmental Analysis of the Smoking Hills and Mason River formations in the Horton River area, Northwest Territories, Canada |
title_full |
The Late Cretaceous Boreal Sea: Biostratigraphy and Paleoenvironmental Analysis of the Smoking Hills and Mason River formations in the Horton River area, Northwest Territories, Canada |
title_fullStr |
The Late Cretaceous Boreal Sea: Biostratigraphy and Paleoenvironmental Analysis of the Smoking Hills and Mason River formations in the Horton River area, Northwest Territories, Canada |
title_full_unstemmed |
The Late Cretaceous Boreal Sea: Biostratigraphy and Paleoenvironmental Analysis of the Smoking Hills and Mason River formations in the Horton River area, Northwest Territories, Canada |
title_sort |
late cretaceous boreal sea: biostratigraphy and paleoenvironmental analysis of the smoking hills and mason river formations in the horton river area, northwest territories, canada |
publisher |
Graduate Studies |
publishDate |
2024 |
url |
https://hdl.handle.net/1880/117962 |
long_lat |
ENVELOPE(-126.638,-126.638,69.559,69.559) ENVELOPE(-126.872,-126.872,69.942,69.942) ENVELOPE(-128.317,-128.317,69.939,69.939) |
geographic |
Arctic Northwest Territories Canada Smoking Hills Horton River Mason River |
geographic_facet |
Arctic Northwest Territories Canada Smoking Hills Horton River Mason River |
genre |
Arctic Foraminifera* Horton River Northwest Territories |
genre_facet |
Arctic Foraminifera* Horton River Northwest Territories |
op_relation |
Diaz-Tamayo, J. F. (2024). The Late Cretaceous Boreal Sea: Biostratigraphy and paleoenvironmental analysis of the Smoking Hills and Mason River formations in the Horton River area, Northwest Territories, Canada (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. https://hdl.handle.net/1880/117962 |
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. |
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