Verified answer

This is earth science question but ill answer anyway.

IT begins technically in the mantle. Aka this process is known as sea floor spreading.

The mantle erupts in deep ocean ridges under water. this builds up and shifts the ocean floor over millions of years. For more information on this question and also more earth science information go to

http://sciencezone.synthasite.com/earth-science.ph...

Hope I helped! (btw my partially finished site)

under ocean stream you will many times recommend currents like the gulf circulate. gulf circulate incredibly includes heat water from south for the time of Atlantic to north, going previous Europe this massive mass of warmth water significantly warms the climate right here. throughout final 12 years gulf circulate has weakened approximately 30% could it quit altogether it is going to reason quite cooler climate. in all probability no ice age yet nonetheless a important effect on climate, ocean stream struggling with could in all probability be clarification for extra worry than the temperature replace it may reason

http://en.wikipedia.org/wiki/Thermohaline_circulat...