The Archean in older sources sometimes called the Archaeozoic, is the second of the four geologic eons of Earth's history, preceded by the Hadean Eon and ...

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The Archean Eon, which lasted from 4.0–2.5 billion years ago, is named after the Greek word for beginning. This eon represents the beginning of the rock record.

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Archean Eon, interval lasting from about 4.0 billion to 2.5 billion years ago, the first formal division of Precambrian time.

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The Archean Eon is defined as the geological time period that spans from approximately 4000 million years ago (Ma) to 2500 Ma, characterized by the formation ...

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The Eoarchean is the first era of the Archean Eon of the geologic record. It spans 431 million years, from the end of the Hadean Eon 4031 Mya to the start ...

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The Archean eon, which preceded the Proterozoic eon, spanned about 1.5 billion years and is subdivided into four eras.

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The Archean Eon is fundamentally important because it is when the bulk of Earth's continental crust was formed. Before the Archean, Earth was largely a water ...

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The Archean Eon is a significant geological time period that spans from approximately 4.0 to 2.5 billion years ago, marking the second eon in Earth's history.

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by DC Catling · 2020 · Cited by 516 — The atmosphere of the Archean eon—one-third of Earth's history—is important for understanding the evolution of our planet and Earth-like ...

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The Archean Eon (4 to 2.5 billion years ago). During the Archean Eon, methane droplets in the air shrouded the young Earth in a global haze.

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