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Learn how fossils form through sedimentation and mineralization. Discover types like moulds, casts, and trace fossils in our ...

Rocks and minerals are closely related, but there are fundamental differences between the two. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Earth's first continents, known as the cratons, emerged from the ocean between 3.3 billion and ...