Late Quaternary landscape evolution in a region of stable postglacial relative sea levels, British Columbia central coast, Canada
After retreat of the Cordilleran Ice Sheet ( CIS ) and subsequent glacio‐isostatic adjustment of the central coast of British Columbia ( BC ), Canada, a complex coastline emerged as relative sea level rapidly reached equilibrium and maintained stability over the end of the Late Pleistocene and Holoc...
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crwiley:10.1111/bor.12297 2024-06-02T08:08:20+00:00 Late Quaternary landscape evolution in a region of stable postglacial relative sea levels, British Columbia central coast, Canada Eamer, Jordan B. R. Shugar, Daniel H. Walker, Ian J. Neudorf, Christina M. Lian, Olav B. Eamer, Jennifer L. Bryce, Jordan Biln, Libby Natural Sciences and Engineering Research Council of Canada 2017 http://dx.doi.org/10.1111/bor.12297 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fbor.12297 https://onlinelibrary.wiley.com/doi/pdf/10.1111/bor.12297 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Boreas volume 47, issue 3, page 738-753 ISSN 0300-9483 1502-3885 journal-article 2017 crwiley https://doi.org/10.1111/bor.12297 2024-05-03T12:02:25Z After retreat of the Cordilleran Ice Sheet ( CIS ) and subsequent glacio‐isostatic adjustment of the central coast of British Columbia ( BC ), Canada, a complex coastline emerged as relative sea level rapidly reached equilibrium and maintained stability over the end of the Late Pleistocene and Holocene. This study provides a late Quaternary reconstruction of the landscape evolution of a geographically distinct location on the central BC coast, northwest Calvert Island, which experienced a re‐advance of the CIS near the end of the Late Pleistocene and minimal subsequent relative sea‐level change. Geomorphological observations from Li DAR imagery, sedimentological and palaeoecological evidence from exposures, cores and shovel pits, and a robust luminescence and 14 C‐based chronology spanning the last 15 000 years are used to reconstruct the landscape of northwest Calvert Island following CIS retreat. A single‐aliquot regenerative dose protocol that was developed specifically for luminescence dating of the sediments on Calvert Island was utilized in this study. Localized proglacial sedimentation was linked to the glacial re‐advance experienced at the end of the Late Pleistocene. Extensive coastal reconfiguration (e.g. rapid shoreline progradation of >1 m a −1 ) occurred in the absence of extensive RSL change, which was the main driver of coastal change elsewhere along the BC coast. Changes in climate, small magnitude changes in RSL , and fire all probably played a role in isolated aeolian landform development and stabilization in the study area. An important contribution of this study is the documentation of the multi‐disciplinary approach for reconstructing palaeogeography, using multiple geochronological methods, micro‐ and macro‐sedimentology, the palaeoecology inferred from both macro and microfossils (e.g. diatoms and foraminifers), stratigraphy, field mapping and remote sensing. In addition, these findings inform our understanding of the drivers of coastal sedimentary processes, particularly in the ... Article in Journal/Newspaper Ice Sheet Wiley Online Library British Columbia ENVELOPE(-125.003,-125.003,54.000,54.000) Canada Boreas 47 3 738 753 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
After retreat of the Cordilleran Ice Sheet ( CIS ) and subsequent glacio‐isostatic adjustment of the central coast of British Columbia ( BC ), Canada, a complex coastline emerged as relative sea level rapidly reached equilibrium and maintained stability over the end of the Late Pleistocene and Holocene. This study provides a late Quaternary reconstruction of the landscape evolution of a geographically distinct location on the central BC coast, northwest Calvert Island, which experienced a re‐advance of the CIS near the end of the Late Pleistocene and minimal subsequent relative sea‐level change. Geomorphological observations from Li DAR imagery, sedimentological and palaeoecological evidence from exposures, cores and shovel pits, and a robust luminescence and 14 C‐based chronology spanning the last 15 000 years are used to reconstruct the landscape of northwest Calvert Island following CIS retreat. A single‐aliquot regenerative dose protocol that was developed specifically for luminescence dating of the sediments on Calvert Island was utilized in this study. Localized proglacial sedimentation was linked to the glacial re‐advance experienced at the end of the Late Pleistocene. Extensive coastal reconfiguration (e.g. rapid shoreline progradation of >1 m a −1 ) occurred in the absence of extensive RSL change, which was the main driver of coastal change elsewhere along the BC coast. Changes in climate, small magnitude changes in RSL , and fire all probably played a role in isolated aeolian landform development and stabilization in the study area. An important contribution of this study is the documentation of the multi‐disciplinary approach for reconstructing palaeogeography, using multiple geochronological methods, micro‐ and macro‐sedimentology, the palaeoecology inferred from both macro and microfossils (e.g. diatoms and foraminifers), stratigraphy, field mapping and remote sensing. In addition, these findings inform our understanding of the drivers of coastal sedimentary processes, particularly in the ... |
author2 |
Natural Sciences and Engineering Research Council of Canada |
format |
Article in Journal/Newspaper |
author |
Eamer, Jordan B. R. Shugar, Daniel H. Walker, Ian J. Neudorf, Christina M. Lian, Olav B. Eamer, Jennifer L. Bryce, Jordan Biln, Libby |
spellingShingle |
Eamer, Jordan B. R. Shugar, Daniel H. Walker, Ian J. Neudorf, Christina M. Lian, Olav B. Eamer, Jennifer L. Bryce, Jordan Biln, Libby Late Quaternary landscape evolution in a region of stable postglacial relative sea levels, British Columbia central coast, Canada |
author_facet |
Eamer, Jordan B. R. Shugar, Daniel H. Walker, Ian J. Neudorf, Christina M. Lian, Olav B. Eamer, Jennifer L. Bryce, Jordan Biln, Libby |
author_sort |
Eamer, Jordan B. R. |
title |
Late Quaternary landscape evolution in a region of stable postglacial relative sea levels, British Columbia central coast, Canada |
title_short |
Late Quaternary landscape evolution in a region of stable postglacial relative sea levels, British Columbia central coast, Canada |
title_full |
Late Quaternary landscape evolution in a region of stable postglacial relative sea levels, British Columbia central coast, Canada |
title_fullStr |
Late Quaternary landscape evolution in a region of stable postglacial relative sea levels, British Columbia central coast, Canada |
title_full_unstemmed |
Late Quaternary landscape evolution in a region of stable postglacial relative sea levels, British Columbia central coast, Canada |
title_sort |
late quaternary landscape evolution in a region of stable postglacial relative sea levels, british columbia central coast, canada |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1111/bor.12297 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fbor.12297 https://onlinelibrary.wiley.com/doi/pdf/10.1111/bor.12297 |
long_lat |
ENVELOPE(-125.003,-125.003,54.000,54.000) |
geographic |
British Columbia Canada |
geographic_facet |
British Columbia Canada |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Boreas volume 47, issue 3, page 738-753 ISSN 0300-9483 1502-3885 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/bor.12297 |
container_title |
Boreas |
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47 |
container_issue |
3 |
container_start_page |
738 |
op_container_end_page |
753 |
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1800753561746800640 |