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ZONE ADRÉNALINE La Cyber-encyclopédieGoldthwait SeaAncient sea that existed above the estuary and the gulf of the Saint Lawrence River. The drowning of the terrain by the Goldthwait Sea was done at the rhythm of deglaciation and the subsequent isostatic rising, which took about 7,000 years, from 14,500 to 7,000 BP. From the beginning of the deglaciation period, the sea formed an important calving bay where immense icebergs detached from the face of glacier. The sea separated two ice masses on both sides of the Saint Lawrence. The south bank was the first to de-ice (14,000 BP) and very quickly, after not even 400 years, the northern coast of Gaspé was totally free of ice. The North Shore was drowned a little later, from 12,500 BP, except in the case of Anticosti Island where the coastal area was submerged from 14,000 BP.
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