The Hadean Eon: The First Supereon

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The most copious defined unit of time is the Precambrian division. This geological stretch of time is known as the first Supereon that comprises Earth’s history which lasted from the initial formation of the planet (about 4.6 billion years ago) to the phenomenal beginnings of the Cambrian period (dated at about 542 million years ago). This long stretch of time involved the transformation of the earth from a barren planet to one full of life. Three eons collectively comprise the Precambrian. These include the Hadean, the Archean and the Proterozoic. The Hadean eon was the first eon in earth’s history and refers to the birth of the solar system that occurred between 4.6 billion to 4 billion years ago. It began with a solar nebula, which consisted
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