Sedimentology and tectonic history of the Eureka Sound and Beaufort formations, southern Ellesmere Island, Arctic, Canada
The Eureka Sound Formation in the eastern Canadian Arctic Archipelago is an Upper Cretaceous to Paleogene pre- and syn-tectonic deposit that records the uplift and segmentation of the Early Carboniferous to Tertiary Sverdrup Basin. Scattered outliers of the Eureka Sound Formation on southern Ellesme...
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ftunivbritcolcir:oai:circle.library.ubc.ca:2429/24904 2023-05-15T14:29:02+02:00 Sedimentology and tectonic history of the Eureka Sound and Beaufort formations, southern Ellesmere Island, Arctic, Canada Riediger, Cynthia Louise 1985 http://hdl.handle.net/2429/24904 eng eng University of British Columbia For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. Geology - Ellesmere Land - Judge Daly Basin Sedimentation and deposition - Northwest Territories Text Thesis/Dissertation 1985 ftunivbritcolcir 2019-10-15T17:57:22Z The Eureka Sound Formation in the eastern Canadian Arctic Archipelago is an Upper Cretaceous to Paleogene pre- and syn-tectonic deposit that records the uplift and segmentation of the Early Carboniferous to Tertiary Sverdrup Basin. Scattered outliers of the Eureka Sound Formation on southern Ellesmere Island rest unconformably on or are faulted against Devonian strata. In the vicinity of Vendom, Stenkul, Baumann and Sor Fiords, the Eureka Sound Formation attains a maximum thickness of 480 m and comprises a sequence of nonmarine and brackish water deposits that ranges in age from mid-Paleocene to Late Eocene. Eureka Sound strata which crop out along the shores of Stenkul Fiord are divided into four lithofacies assemblages. The stratigraphic section is composed mainly of two nonmarine assemblages which alternate throughout the sequence. Lithofacies Assemblage I consists of fining-upward sandstones which attain thicknesses of 20 m and are interpreted as fluvial deposits. Lithofacies Assemblage II comprises interbedded mudstones and coal in seams up to 8 m thick, and are interpreted as floodbasin deposits of an alluvial plain. Two marine lithofacies assemblages (III, IV) are recognized locally and constitute a minor part of the stratigraphic succession. Lithofacies Assemblage III comprises the basal strata in the study area and consists of approximately 90 m of buff-weathering mudstones and interbedded thin coals which were deposit ed in brackish lagoonal, estuarine and salt marsh environments. Lithofacies Assemblage IV occurs locally in the middle of the stratigraphic section and consists of up to 10m of white, well sorted quartz arenites and minor mudstones, which are interpreted as deposits of a barrier island system. To the northeast of Stenkul Fiord at Makinson Inlet, outliers of the Eureka Sound Formation rest unconformably on Paleozoic strata, and are in turn overlain with angular unconformity by as much as 120 m of Early Miocene fanglomerates of the Beaufort Formation. The ages of these sediments, in conjunction with ages reported from the Eureka Sound and Beaufort Formations in other parts of Ellesmere and Axel Heiberg Islands, bracket the timing of the orogenic phase of the Eurekan orogeny in the eastern Arctic as Late Eocene to Miocene. Science, Faculty of Earth, Ocean and Atmospheric Sciences, Department of Graduate Thesis Arctic Archipelago Arctic Canadian Arctic Archipelago Ellesmere Island Eureka Sound Northwest Territories sverdrup basin University of British Columbia: cIRcle - UBC's Information Repository Arctic Barrier Island ENVELOPE(78.396,78.396,-68.431,-68.431) Buff ENVELOPE(-64.567,-64.567,-64.833,-64.833) Canada Canadian Arctic Archipelago Daly ENVELOPE(63.761,63.761,-67.513,-67.513) Ellesmere Island Eureka ENVELOPE(-85.940,-85.940,79.990,79.990) Eureka Sound ENVELOPE(-84.999,-84.999,79.002,79.002) Heiberg ENVELOPE(13.964,13.964,66.424,66.424) Makinson Inlet ENVELOPE(-79.665,-79.665,77.268,77.268) Northwest Territories |
institution |
Open Polar |
collection |
University of British Columbia: cIRcle - UBC's Information Repository |
op_collection_id |
ftunivbritcolcir |
language |
English |
topic |
Geology - Ellesmere Land - Judge Daly Basin Sedimentation and deposition - Northwest Territories |
spellingShingle |
Geology - Ellesmere Land - Judge Daly Basin Sedimentation and deposition - Northwest Territories Riediger, Cynthia Louise Sedimentology and tectonic history of the Eureka Sound and Beaufort formations, southern Ellesmere Island, Arctic, Canada |
topic_facet |
Geology - Ellesmere Land - Judge Daly Basin Sedimentation and deposition - Northwest Territories |
description |
The Eureka Sound Formation in the eastern Canadian Arctic Archipelago is an Upper Cretaceous to Paleogene pre- and syn-tectonic deposit that records the uplift and segmentation of the Early Carboniferous to Tertiary Sverdrup Basin. Scattered outliers of the Eureka Sound Formation on southern Ellesmere Island rest unconformably on or are faulted against Devonian strata. In the vicinity of Vendom, Stenkul, Baumann and Sor Fiords, the Eureka Sound Formation attains a maximum thickness of 480 m and comprises a sequence of nonmarine and brackish water deposits that ranges in age from mid-Paleocene to Late Eocene. Eureka Sound strata which crop out along the shores of Stenkul Fiord are divided into four lithofacies assemblages. The stratigraphic section is composed mainly of two nonmarine assemblages which alternate throughout the sequence. Lithofacies Assemblage I consists of fining-upward sandstones which attain thicknesses of 20 m and are interpreted as fluvial deposits. Lithofacies Assemblage II comprises interbedded mudstones and coal in seams up to 8 m thick, and are interpreted as floodbasin deposits of an alluvial plain. Two marine lithofacies assemblages (III, IV) are recognized locally and constitute a minor part of the stratigraphic succession. Lithofacies Assemblage III comprises the basal strata in the study area and consists of approximately 90 m of buff-weathering mudstones and interbedded thin coals which were deposit ed in brackish lagoonal, estuarine and salt marsh environments. Lithofacies Assemblage IV occurs locally in the middle of the stratigraphic section and consists of up to 10m of white, well sorted quartz arenites and minor mudstones, which are interpreted as deposits of a barrier island system. To the northeast of Stenkul Fiord at Makinson Inlet, outliers of the Eureka Sound Formation rest unconformably on Paleozoic strata, and are in turn overlain with angular unconformity by as much as 120 m of Early Miocene fanglomerates of the Beaufort Formation. The ages of these sediments, in conjunction with ages reported from the Eureka Sound and Beaufort Formations in other parts of Ellesmere and Axel Heiberg Islands, bracket the timing of the orogenic phase of the Eurekan orogeny in the eastern Arctic as Late Eocene to Miocene. Science, Faculty of Earth, Ocean and Atmospheric Sciences, Department of Graduate |
format |
Thesis |
author |
Riediger, Cynthia Louise |
author_facet |
Riediger, Cynthia Louise |
author_sort |
Riediger, Cynthia Louise |
title |
Sedimentology and tectonic history of the Eureka Sound and Beaufort formations, southern Ellesmere Island, Arctic, Canada |
title_short |
Sedimentology and tectonic history of the Eureka Sound and Beaufort formations, southern Ellesmere Island, Arctic, Canada |
title_full |
Sedimentology and tectonic history of the Eureka Sound and Beaufort formations, southern Ellesmere Island, Arctic, Canada |
title_fullStr |
Sedimentology and tectonic history of the Eureka Sound and Beaufort formations, southern Ellesmere Island, Arctic, Canada |
title_full_unstemmed |
Sedimentology and tectonic history of the Eureka Sound and Beaufort formations, southern Ellesmere Island, Arctic, Canada |
title_sort |
sedimentology and tectonic history of the eureka sound and beaufort formations, southern ellesmere island, arctic, canada |
publisher |
University of British Columbia |
publishDate |
1985 |
url |
http://hdl.handle.net/2429/24904 |
long_lat |
ENVELOPE(78.396,78.396,-68.431,-68.431) ENVELOPE(-64.567,-64.567,-64.833,-64.833) ENVELOPE(63.761,63.761,-67.513,-67.513) ENVELOPE(-85.940,-85.940,79.990,79.990) ENVELOPE(-84.999,-84.999,79.002,79.002) ENVELOPE(13.964,13.964,66.424,66.424) ENVELOPE(-79.665,-79.665,77.268,77.268) |
geographic |
Arctic Barrier Island Buff Canada Canadian Arctic Archipelago Daly Ellesmere Island Eureka Eureka Sound Heiberg Makinson Inlet Northwest Territories |
geographic_facet |
Arctic Barrier Island Buff Canada Canadian Arctic Archipelago Daly Ellesmere Island Eureka Eureka Sound Heiberg Makinson Inlet Northwest Territories |
genre |
Arctic Archipelago Arctic Canadian Arctic Archipelago Ellesmere Island Eureka Sound Northwest Territories sverdrup basin |
genre_facet |
Arctic Archipelago Arctic Canadian Arctic Archipelago Ellesmere Island Eureka Sound Northwest Territories sverdrup basin |
op_rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. |
_version_ |
1766303138031075328 |