Mesoarchean
From Wikipedia, the free encyclopedia
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Mesoarchean era
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| Geologic timescale of the Precambrian |
| (millions of years ago) |
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The Mesoarchean (pronounced /ˌmiːzoʊɑrˈkiːən/, also spelled Mesoarchaean) is a geologic era within the Archean, spanning 3200 Ma to 2800 Ma (million years ago). The period is defined chronometrically and is not referenced to a specific level in a rock section on Earth. Fossils from Australia show that stromatolites have lived on Earth since the Mesoarchean. The first supercontinent Vaalbara broke up during this time around 2.8 ma.
| Archean eon | |||
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| Eoarchean | Paleoarchean | Mesoarchean | Neoarchean |
