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Glacio-marine sediments are deposited by glacial metlwater in an ocean environment. Glacial seas were not in the same place as the seas of today. In fact, during glaciation the weight of the ice cap was sufficient to depress the surface of the continent to a level below that of the ocean. As the ice cap disappeared, the ocean invaded the lower parts of the continent, creating seas. Once the continent was relieved of the weight of the ice, it gradually rebounded and the ocean waters withdrew to form the shoreline we are familiar with today. As a result of this rebound effect, which is still happening today, glacio-marine deposits are now exposed in places which may be far from the nearest modern-day oceans.

Glacio-marine Parent Material

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