Image: Tiny crystals called zircons are used to date oceanic crust. A newly developed method that detects tiny bits of zircon in rock reliably predicts the age of ocean crust more than 99 percent of ...

Giant regions of the mantle where seismic waves slow down may have formed from subducted ocean crust, a new study finds. When you purchase through links on our site, we may earn an affiliate ...

Researchers describe zircons from the Andes mountains of Patagonia. Although the zircons formed when tectonic plates were colliding, they have a chemical signature associated with when the plates were ...