A crack in the crust near Iceland is what is thought to have started the breakup of Pangaea. As this crack grew larger, the ______ Ocean grew, and the _____ Ocean shrank
The Pacific plate is known as the shrinking plate and is moving at a speed of about 7-11 cm in a year, in the northwestwards due to the spreading or the opening up of the Atlantic plates due to the mid-oceanic ridge and in the S-shaped patterns of the ocean between western Europe and eastern America.
