Abstract

A multichannel seismic reflection profile shows that the chronostratigraphic and lithostratigraphic units and depositional history of the Georges Bank Basin are similar to those of the Scotian Basin. Carbonate rocks of the Iroquois and Abenaki formations, dominated the eastern half of the Georges Bank basin during the Jurassic. Siliciclastic deposition, dominated the entire basin throughout the Cretaceous and Cenozoic. Tentative correlation between the Georges Bank Basin sequences and those of the adjacent, deep North American Basin suggests that the deep-sea facies were strongly influenced by depositional events on the shelf. Deposition in both areas has been sensitive to changes in sea level and to paleoclimatic cycles.--Modified journal abstract.

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