Colloque

The Late Wisconsinan glacial history of southern New Brunswick: an alternative model

Allen Seaman

Membre a labase

Allen Seaman

Résumé du colloque

Based on a limited amount of information that is inconsistent with the current model for the Late Wisconsinan glacial history of southern New Brunswick, an alternative, largely nonsecular, model is proposed. This model calls for full glaciation of the Central Plateau of the Caledonian Highlands, rather than partial glaciation as in the current model. Initial ice retreat was due to calving into rising marine waters. In the Bay of Fundy, the ice margin retreated to a position approximately coincident with the present coastline. In contrast, Northumberland Strait waters may have opened up the New Brunswick Lowlands as far west as the Saint John River valley, leaving ice possibly combined with climatic deterioration, led to a late-stage, large-scale readvance across the lowlands.

Contexte

Section :

Géomorphologie

Thème du colloque :

Géomorphologie

Hôte : Université de Moncton

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Thème du colloque :

Géomorphologie

The Late Wisconsinan glacial history of southern New Brunswick: an alternative model

Allen Seaman