The Proterozoic in Utah
2500 - 542 Ma

The Proterozoic Eon took place 2.5 GA to 542.0 MY. Between the Phanerozoic and the Archean. It was split into three different parts, Neoproterozoic, Mesoproterozoic, and the Paleoproterozoic. During this time, the world’s continents were joined together, creating the world’s largest land mass. It was called Laurentia, it later broke into Rodinia. The oceans were shallow, and the mountain ranges were huge. The world was a very different place.

Contents:

Mineral Fork Tillite
​      Videos of my rock pile and me cutting a specimen of tillite

​Big Cottonwood Formation