Carboniferous palynoevents in the circum-Arctic region

The Carboniferous of the present-day Arctic yields an abundant and diverse association of terrestrial palynomorphs, particularly from Mississippian successions. Relatively few sections have been studied. However, those published so far demonstrate considerable similarities in the palynofloras betwee...

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Bibliographic Details
Published in:Atlantic Geology
Main Authors: Mangerud, Gunn, Lopas, Gilda, Bujak, Jonathan
Format: Text
Language:English
Published: Atlantic Geoscience Society 2021
Subjects:
geo
Online Access:https://doi.org/10.4138/atlgeol.2021.003
http://id.erudit.org/iderudit/1075512ar
Description
Summary:The Carboniferous of the present-day Arctic yields an abundant and diverse association of terrestrial palynomorphs, particularly from Mississippian successions. Relatively few sections have been studied. However, those published so far demonstrate considerable similarities in the palynofloras between Arctic regions. Based on the published record, we present a compilation of 31 last occurrences (LOs), first occurrences (FOs), and some abundance events that have correlation potential around the Arctic. The chronostratigraphic resolution is relatively low, and the lack of independent age control hampers exact age assignments. But for most of these successions, palynology is the only dating tool available. Le Carbonifère de la région arctique d’aujourd’hui fait état d’une association abondante et diversifiée de palynomorphes terrestres, en particulier de successions du Mississippien. Relativement peu de sections ont été étudiées. Celles publiées jusqu’ici montrent toutefois des similarités considérables des palynoflores entre les régions arctiques. En nous basant sur les documents publiés, nous présentons une compilation des 31 dernières occurrences (DO), des premières occurrences (PO) et de certains phénomènes d’abondance qui pourraient être corrélés dans la région de l’Arctique. La résolution chronostratigraphique est relativement faible et l’absence de critères de datation gêne l’attribution d’âges exacts. La palynologie constitue toutefois le seul outil de datation disponible dans le cas de la majorité de ces successions.