Mesoproterozoic
Second era of the Proterozoic Eon / From Wikipedia, the free encyclopedia
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Not to be confused with Mesozoic.
The Mesoproterozoic Era[4] is a geologic era that occurred from 1,600 to 1,000 million years ago. The Mesoproterozoic was the first era of Earth's history for which a fairly definitive geological record survives. Continents existed during the preceding era (the Paleoproterozoic), but little is known about them. The continental masses of the Mesoproterozoic were more or less the same ones that exist today, although their arrangement on the Earth's surface was different.
Quick Facts Chronology, Proposed redefinition(s) ...
Mesoproterozoic | ||||||
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1600 – 1000 Ma | ||||||
Chronology | ||||||
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Proposed redefinition(s) | 1780–850 Ma Gradstein et al., 2012 | |||||
Proposed subdivisions | Rodinian Period, 1780–850 Ma Gradstein et al., 2012 | |||||
Etymology | ||||||
Name formality | Formal | |||||
Usage information | ||||||
Celestial body | Earth | |||||
Regional usage | Global (ICS) | |||||
Time scale(s) used | ICS Time Scale | |||||
Definition | ||||||
Chronological unit | Era | |||||
Stratigraphic unit | Erathem | |||||
Time span formality | Formal | |||||
Lower boundary definition | Defined Chronometrically | |||||
Lower GSSA ratified | 1991[1] | |||||
Upper boundary definition | Defined Chronometrically | |||||
Upper GSSA ratified | 1991[1] |
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