News tagged with zircon crystals

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 ...

Space & Earth / Earth Sciences

May 31, 2012 | 5 / 5 (1) | 0 |

Andes Mountains Are Older Than Previously Believed

(PhysOrg.com) -- The geologic faults responsible for the rise of the eastern Andes mountains in Colombia became active 25 million years ago—18 million years before the previously accepted start date for the ...

Space & Earth / Earth Sciences

May 15, 2009 | 4.4 / 5 (8) | 1