News tagged with plate tectonics

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Zircon crystals reveal onset of plate tectonics

(Phys.org) -- We're familiar with the theory that the Earth's crust is composed of tectonic plates that move, sometimes dramatically to create earthquakes and tsunamis - but until recently, nobody knew how long this movement ...

dateMay 31, 2012 in Earth Sciences
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Plate tectonics coming of age

(PhysOrg.com) -- Plate tectonics in its current form is believed to have started one billion years ago. A study of two billion year old rocks from African gold mines has now shown that the same process of subduction we observe ...

dateNov 24, 2011 in Earth Sciences
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