Quakes under Pacific floor reveal unexpected circulatory system

Zigzagging some 60,000 kilometers across ocean floors, earth’s system of mid-ocean ridges plays a pivotal role in many workings of the planet, from its plate-tectonic movements to heat flow from the interior, and the chemistry of rock, water and air.

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<p><a href="http://www.physorg.com/news119106997.html">Quakes under Pacific floor reveal unexpected circulatory system</a></p> <p>Zigzagging some 60,000 kilometers across ocean floors, earth’s system of mid-ocean ridges plays a pivotal role in many workings of the planet, from its plate-tectonic movements to heat flow from the interior, and the chemistry of rock, water and air.</p>