Moon Formation - NASA Science

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The Ocean - Precambrian

Precambrian Era Timeline & Facts

History | Ancient History on Instagram: "The Precambrian era, which spans nearly 4 billion years of Earth’s history before the emergence of abundant complex life, represents the vast and largely hidden foundation upon which all later geological and biological evolution rests. Beginning with the planet’s formation about 4.6 billion years ago, this era saw the cooling of Earth’s molten surface, the creation of the first oceans, and the appearance of the earliest microbial life, including stromatol

Precambrian Plate Tectonics ( Read ) | Earth Science

Fossils of the Rocky Mountains