Hosted on MSN6mon
4.4 Billion Year Old Crystals Reveal That The Earth Had Both Fresh And Saltwater Present Much Earlier Than Previously Believed
To Dr. Hugo Olierook of Curtin University, however, zircons are able to reveal a lot of information about Earth from billions of years ago. These crystals are among the oldest crystals around ...
Hosted on MSN11mon
Researchers propose new step in tectonic squeeze that turns seafloor into mountains
Scientists use tiny minerals called zircons as geologic timekeepers. Often no bigger than a grain of sand, these crystals record chemical signatures of the geological environment where they formed.