Aaron Cavosie

What can zircons tell us about the Early Earth? part of Early Earth:Activities
This image shows an array of Jack Hill zircons arranged on a piece of tape prior to casting in epoxy. Details Students create U-Pb concordia plots in Excel to experience the methods used to date the worlds oldest ...

When did oceans form on Earth? What evidence is preserved in the rock record? part of Early Earth:Key Questions about the Early Earth
Submitted by Aaron Cavosie, University of Puerto Rico Why is this question important? Most of us teach earth science using simple or sophisticated models and imagery that demonstrate to students that the Earth is ...