Messinian | |||||||||||
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Chronology | |||||||||||
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Formerly part of | Tertiary Period/System | ||||||||||
Etymology | |||||||||||
Name formality | Formal | ||||||||||
Usage information | |||||||||||
Celestial body | Earth | ||||||||||
Regional usage | Global (ICS) | ||||||||||
Time scale(s) used | ICS Time Scale | ||||||||||
Definition | |||||||||||
Chronological unit | Age | ||||||||||
Stratigraphic unit | Stage | ||||||||||
Time span formality | Formal | ||||||||||
Lower boundary definition |
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Lower boundary GSSP | Oued Akrech section, Rabat, Morocco 33°56′13″N 6°48′45″W / 33.9369°N 6.8125°W | ||||||||||
Lower GSSP ratified | January 2000[4] | ||||||||||
Upper boundary definition | Base of the Thvera magnetic event (C3n.4n), which is only 96 ka (5 precession cycles) younger than the GSSP | ||||||||||
Upper boundary GSSP | Heraclea Minoa section, Heraclea Minoa, Cattolica Eraclea, Sicily, Italy 37°23′30″N 13°16′50″E / 37.3917°N 13.2806°E | ||||||||||
Upper GSSP ratified | 2000[5] |
The Messinian is in the geologic timescale the last age or uppermost stage of the Miocene. It spans the time between 7.246 ± 0.005 Ma and 5.333 ± 0.005 Ma (million years ago). It follows the Tortonian and is followed by the Zanclean, the first age of the Pliocene.
The Messinian overlaps the Turolian European Land Mammal Mega Zone (more precisely MN 12 and 13) and the Pontian Central European Paratethys Stage. It also overlaps the late Huayquerian and early Montehermosan South American Land Mammal Ages, and falls inside the more extensive Hemphillian North American Land Mammal Age.
During the Messinian, around 6 million years ago, the Messinian salinity crisis took place, which brought about repeated desiccations of the Mediterranean Sea.