Palaeoenvironmental Interpretation of Late Quaternary Marine Molluscan Assemblages, Canadian Arctic Archipelago

This study examines neonto- logical and palaeontological data pertaining to arctic marine molluscs with the goal of reconstructing the palaeoecology of Late Quaternary ca. 12-1 ka BP glaciomarine environments in the Canadian Arctic Archipelago. A total of 26 taxa that represent 15 bivalves and 11 ga...

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Published in:Géographie physique et Quaternaire
Main Authors: Gordillo, Sandra, Aitken, Alec E.
Format: Text
Language:English
Published: Les Presses de l'Université de Montréal 2000
Subjects:
geo
Online Access:https://doi.org/10.7202/005650ar
http://id.erudit.org/iderudit/005650ar
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spelling fttriple:oai:gotriple.eu:10.7202/005650ar 2023-05-15T14:28:46+02:00 Palaeoenvironmental Interpretation of Late Quaternary Marine Molluscan Assemblages, Canadian Arctic Archipelago Gordillo, Sandra Aitken, Alec E. 2000-01-01 https://doi.org/10.7202/005650ar http://id.erudit.org/iderudit/005650ar en eng Les Presses de l'Université de Montréal Érudit doi:10.7202/005650ar http://id.erudit.org/iderudit/005650ar Géographie physique et Quaternaire geo envir Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ 2000 fttriple https://doi.org/10.7202/005650ar 2023-01-22T16:35:20Z This study examines neonto- logical and palaeontological data pertaining to arctic marine molluscs with the goal of reconstructing the palaeoecology of Late Quaternary ca. 12-1 ka BP glaciomarine environments in the Canadian Arctic Archipelago. A total of 26 taxa that represent 15 bivalves and 11 gastropods were recorded in shell collections recovered from Prince of Wales, Somerset, Devon, Axel Heiberg and Ellesmere islands. In spite of taphonomic bias, the observed fossil faunas bear strong similarities to modern benthic molluscan faunas inhabiting high latitude continental shelf environments, reflecting the high preservation potential of molluscan taxa in Quaternary marine sediments. The dominance of an arctic-boreal fauna represented by Hiatella arctica, Mya truncata and Astarte borealis is the product of natural ecological conditions in high arctic glaciomarine environments. Environmental factors controlling the distribution and species composition of the Late Quaternary molluscan assemblages from this region are discussed. On étudie ici les données néontologiques et paléontologiques qui se rapportent aux mollusques marins de l'Arctique dans le but de reconstituer la paléocologie des milieux glaciomarins du Quaternaire supérieur entre 12 et 1 ka BP. Un total de 26 taxons composé de 15 bivalves et de 11 gastéropodes a été consigné dans les collections de coquillages assemblées dans les îles du Prince-de-Galles, Somerset, Devon, Axel Heiberg et Ellesmere. Malgré l'influence des processus taphonomiques, les faunes fossiles observées ressemblent beaucoup aux faunes de mollusques benthiques modernes habitant le plateau continental des hautes latitudes, ce qui reflète la grande capacité de préservation des taxons de mollusques dans les sédiments du Quaternaire. La dominance de la faune boréale-arctique représentée par Astarte borealis, Hiatella arctica et Mya truncata est le résultat des conditions écologiques naturelles qui prévalent dans les mileux glaciomarins du Haut Arctique. On étudie enfin les facteurs ... Text Arctic Archipelago Arctic Arctique* Canadian Arctic Archipelago Unknown Arctic Canadian Arctic Archipelago Heiberg ENVELOPE(13.964,13.964,66.424,66.424) Le Plateau ENVELOPE(70.250,70.250,-49.350,-49.350) Géographie physique et Quaternaire 54 3 301 315
institution Open Polar
collection Unknown
op_collection_id fttriple
language English
topic geo
envir
spellingShingle geo
envir
Gordillo, Sandra
Aitken, Alec E.
Palaeoenvironmental Interpretation of Late Quaternary Marine Molluscan Assemblages, Canadian Arctic Archipelago
topic_facet geo
envir
description This study examines neonto- logical and palaeontological data pertaining to arctic marine molluscs with the goal of reconstructing the palaeoecology of Late Quaternary ca. 12-1 ka BP glaciomarine environments in the Canadian Arctic Archipelago. A total of 26 taxa that represent 15 bivalves and 11 gastropods were recorded in shell collections recovered from Prince of Wales, Somerset, Devon, Axel Heiberg and Ellesmere islands. In spite of taphonomic bias, the observed fossil faunas bear strong similarities to modern benthic molluscan faunas inhabiting high latitude continental shelf environments, reflecting the high preservation potential of molluscan taxa in Quaternary marine sediments. The dominance of an arctic-boreal fauna represented by Hiatella arctica, Mya truncata and Astarte borealis is the product of natural ecological conditions in high arctic glaciomarine environments. Environmental factors controlling the distribution and species composition of the Late Quaternary molluscan assemblages from this region are discussed. On étudie ici les données néontologiques et paléontologiques qui se rapportent aux mollusques marins de l'Arctique dans le but de reconstituer la paléocologie des milieux glaciomarins du Quaternaire supérieur entre 12 et 1 ka BP. Un total de 26 taxons composé de 15 bivalves et de 11 gastéropodes a été consigné dans les collections de coquillages assemblées dans les îles du Prince-de-Galles, Somerset, Devon, Axel Heiberg et Ellesmere. Malgré l'influence des processus taphonomiques, les faunes fossiles observées ressemblent beaucoup aux faunes de mollusques benthiques modernes habitant le plateau continental des hautes latitudes, ce qui reflète la grande capacité de préservation des taxons de mollusques dans les sédiments du Quaternaire. La dominance de la faune boréale-arctique représentée par Astarte borealis, Hiatella arctica et Mya truncata est le résultat des conditions écologiques naturelles qui prévalent dans les mileux glaciomarins du Haut Arctique. On étudie enfin les facteurs ...
format Text
author Gordillo, Sandra
Aitken, Alec E.
author_facet Gordillo, Sandra
Aitken, Alec E.
author_sort Gordillo, Sandra
title Palaeoenvironmental Interpretation of Late Quaternary Marine Molluscan Assemblages, Canadian Arctic Archipelago
title_short Palaeoenvironmental Interpretation of Late Quaternary Marine Molluscan Assemblages, Canadian Arctic Archipelago
title_full Palaeoenvironmental Interpretation of Late Quaternary Marine Molluscan Assemblages, Canadian Arctic Archipelago
title_fullStr Palaeoenvironmental Interpretation of Late Quaternary Marine Molluscan Assemblages, Canadian Arctic Archipelago
title_full_unstemmed Palaeoenvironmental Interpretation of Late Quaternary Marine Molluscan Assemblages, Canadian Arctic Archipelago
title_sort palaeoenvironmental interpretation of late quaternary marine molluscan assemblages, canadian arctic archipelago
publisher Les Presses de l'Université de Montréal
publishDate 2000
url https://doi.org/10.7202/005650ar
http://id.erudit.org/iderudit/005650ar
long_lat ENVELOPE(13.964,13.964,66.424,66.424)
ENVELOPE(70.250,70.250,-49.350,-49.350)
geographic Arctic
Canadian Arctic Archipelago
Heiberg
Le Plateau
geographic_facet Arctic
Canadian Arctic Archipelago
Heiberg
Le Plateau
genre Arctic Archipelago
Arctic
Arctique*
Canadian Arctic Archipelago
genre_facet Arctic Archipelago
Arctic
Arctique*
Canadian Arctic Archipelago
op_source Géographie physique et Quaternaire
op_relation doi:10.7202/005650ar
http://id.erudit.org/iderudit/005650ar
op_doi https://doi.org/10.7202/005650ar
container_title Géographie physique et Quaternaire
container_volume 54
container_issue 3
container_start_page 301
op_container_end_page 315
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