Identifying glacio–isostatic rebound processes using testate amoeba as palaeohydrological proxies; a case study from subarctic Québec, Canada
Glacio–isostatic rebound is one of the most important landscape processes affecting the northern and northeastern coast of Canada and, therefore, reconstruction of postglacial rebound rates is critical for a better understanding of landscape evolution in this region. Yet, studies reconstructing coas...
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Romanian Association of Geomorphologists
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ftdoajarticles:oai:doaj.org/article:c22e85a07b65411ca92cb91077278492 2023-05-15T18:28:24+02:00 Identifying glacio–isostatic rebound processes using testate amoeba as palaeohydrological proxies; a case study from subarctic Québec, Canada Crystal FERGUSON Florin PENDEA 2018-12-01T00:00:00Z https://doi.org/10.21094/rg.2018.008 https://doaj.org/article/c22e85a07b65411ca92cb91077278492 EN FR eng fre Romanian Association of Geomorphologists http://revistadegeomorfologie.ro/geo/index.php/revista/article/view/32 https://doaj.org/toc/1453-5068 https://doaj.org/toc/2285-6773 doi:10.21094/rg.2018.008 1453-5068 2285-6773 https://doaj.org/article/c22e85a07b65411ca92cb91077278492 Revista de Geomorfologie, Vol 20, Iss 1 (2018) glacio–isostasy wetland hydrology paleoecology testate amoebae Transfer Function radiocarbon dating Geography (General) G1-922 article 2018 ftdoajarticles https://doi.org/10.21094/rg.2018.008 2022-12-31T09:38:39Z Glacio–isostatic rebound is one of the most important landscape processes affecting the northern and northeastern coast of Canada and, therefore, reconstruction of postglacial rebound rates is critical for a better understanding of landscape evolution in this region. Yet, studies reconstructing coastal palaeogeography in Northern Canada are constrained by the limitation of shell–based radiocarbon chronologies used in dating shoreline displacement and palaeo–sea levels. This study proposes an alternative methodology for the reconstruction and dating of palaeo–sea levels, which uses testate amoeba microfossils from coastal sediments as palaeoecological markers of coastal water table shifts linked to sea level change. Our results indicate that testate amoeba–inferred water table reconstruction is a good indicator of water table drawdown due to isostatic uplift on affected coastlines. Furthermore, radiocarbon dating of distinct plant macrofossils within the transitional marine/freshwater stratigraphy avoids the inherent reservoir effect issues associated with dating of marine shells. Article in Journal/Newspaper Subarctic Directory of Open Access Journals: DOAJ Articles Canada Revista de Geomorfologie 20 1 5 16 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English French |
topic |
glacio–isostasy wetland hydrology paleoecology testate amoebae Transfer Function radiocarbon dating Geography (General) G1-922 |
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glacio–isostasy wetland hydrology paleoecology testate amoebae Transfer Function radiocarbon dating Geography (General) G1-922 Crystal FERGUSON Florin PENDEA Identifying glacio–isostatic rebound processes using testate amoeba as palaeohydrological proxies; a case study from subarctic Québec, Canada |
topic_facet |
glacio–isostasy wetland hydrology paleoecology testate amoebae Transfer Function radiocarbon dating Geography (General) G1-922 |
description |
Glacio–isostatic rebound is one of the most important landscape processes affecting the northern and northeastern coast of Canada and, therefore, reconstruction of postglacial rebound rates is critical for a better understanding of landscape evolution in this region. Yet, studies reconstructing coastal palaeogeography in Northern Canada are constrained by the limitation of shell–based radiocarbon chronologies used in dating shoreline displacement and palaeo–sea levels. This study proposes an alternative methodology for the reconstruction and dating of palaeo–sea levels, which uses testate amoeba microfossils from coastal sediments as palaeoecological markers of coastal water table shifts linked to sea level change. Our results indicate that testate amoeba–inferred water table reconstruction is a good indicator of water table drawdown due to isostatic uplift on affected coastlines. Furthermore, radiocarbon dating of distinct plant macrofossils within the transitional marine/freshwater stratigraphy avoids the inherent reservoir effect issues associated with dating of marine shells. |
format |
Article in Journal/Newspaper |
author |
Crystal FERGUSON Florin PENDEA |
author_facet |
Crystal FERGUSON Florin PENDEA |
author_sort |
Crystal FERGUSON |
title |
Identifying glacio–isostatic rebound processes using testate amoeba as palaeohydrological proxies; a case study from subarctic Québec, Canada |
title_short |
Identifying glacio–isostatic rebound processes using testate amoeba as palaeohydrological proxies; a case study from subarctic Québec, Canada |
title_full |
Identifying glacio–isostatic rebound processes using testate amoeba as palaeohydrological proxies; a case study from subarctic Québec, Canada |
title_fullStr |
Identifying glacio–isostatic rebound processes using testate amoeba as palaeohydrological proxies; a case study from subarctic Québec, Canada |
title_full_unstemmed |
Identifying glacio–isostatic rebound processes using testate amoeba as palaeohydrological proxies; a case study from subarctic Québec, Canada |
title_sort |
identifying glacio–isostatic rebound processes using testate amoeba as palaeohydrological proxies; a case study from subarctic québec, canada |
publisher |
Romanian Association of Geomorphologists |
publishDate |
2018 |
url |
https://doi.org/10.21094/rg.2018.008 https://doaj.org/article/c22e85a07b65411ca92cb91077278492 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
Revista de Geomorfologie, Vol 20, Iss 1 (2018) |
op_relation |
http://revistadegeomorfologie.ro/geo/index.php/revista/article/view/32 https://doaj.org/toc/1453-5068 https://doaj.org/toc/2285-6773 doi:10.21094/rg.2018.008 1453-5068 2285-6773 https://doaj.org/article/c22e85a07b65411ca92cb91077278492 |
op_doi |
https://doi.org/10.21094/rg.2018.008 |
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Revista de Geomorfologie |
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20 |
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1 |
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5 |
op_container_end_page |
16 |
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