Geologic Timeline Individual Reflection

In the Hadean eon, Earth was formed, along with the first life forms. In the Archeozoic period shows the earliest evidence of plate tectonics, as well as organic carbon. The Cambrian period has a diversity in which fossils have been recovered. It surprised me that there was evidence of plate tectonics in the Archeozoic period. It is amazing how much humans have impacted the Earth over time. I wonder how old the oldest rock is.