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Géomorphologie et variations globales du niveau de la mer

Pierre Guérémy

Abstracts

Former subaerial landforms are the most commonly used marker for locating the paleo-shorelines, in order to detect global sea-level change.
However, such a geomorphological survey presents some difficulties because of agricultural arrangements or natural erosion affecting loose marine siliciclastic sediments, even before the setting of slope deposits.
But other geomorphological approach is possible. It consists to identify the former buried landforms, which are carved by terrestrial or marine erosion into an uplifting tectonic continental plate, and support the transgressive sediments package of each successive marine terrace deposit.
The creation of these landforms, and their fossilization, are the result of a succession of sea-level fallings and sea-level rises, even if at a millenial-scale, where the rate of sea-level change and the resulting water-depth, control marine erosion and wave-induced shape-sorting processes.
This approach also has somewhat to say about Last Interglacial and Termination II millenial-scale sea level variability.

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Full text

1L'ouvrage présenté dans fichier pdf joint peut aussi être consulté, en libre accès, au format pdf allégé, sur le site : www.physio-geo.fr.

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References

Electronic reference

Pierre Guérémy, Géomorphologie et variations globales du niveau de la merPhysio-Géo [Online], Volume 7 | 2013, Online since 05 May 2013, connection on 29 March 2024. URL: http://journals.openedition.org/physio-geo/3333; DOI: https://doi.org/10.4000/physio-geo.3333

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About the author

Pierre Guérémy

Professeur honoraire (Université De Reims Champagne-Ardenne), 12 boulevard des Clèches, 51420 CERNAY-LES-REIMS.
Courriel : pgueremy@wanadoo.fr

By this author

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Copyright

CC-BY-NC-ND-4.0

The text only may be used under licence CC BY-NC-ND 4.0. All other elements (illustrations, imported files) are “All rights reserved”, unless otherwise stated.

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