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The Neoarchean (/ ˌ n iː oʊ. ɑːr ˈ k iː ə n / NEE-oh-ar-KEE-ən; also spelled Neoarchaean) is the last geologic era in the Archean Eon that spans from 2800 to 2500 million years ago—the period being defined chronometrically and not referencing a specific level in a rock section on Earth. The era is marked by major developments in ...
The Mesoarchean (/ ˌ m iː z oʊ. ɑːr ˈ k iː ə n, ˌ m ɛ z oʊ-/ MEE-zoh-ar-KEE-ən, MEZ-oh-, also spelled Mesoarchaean) is a geologic era in the Archean Eon, spanning , which contains the first evidence of modern-style plate subduction and expansion of microbial life.
c. 66.038 ± 0.011 Ma – Cretaceous-Paleogene extinction event at the end of the Cretaceous Period marks the end of the Mesozoic era and the age of the dinosaurs; start of the Paleogene Period and the current Cenozoic era.
Pongolan Period/System (3020–2780 Ma) – named after the Pongola Supergroup, in reference to the well preserved evidence of terrestrial microbial communities in those rocks. [64] Neoarchean Era/Erathem (2780–2420 Ma) Methanian Period/System (2780–2630 Ma) – named for the inferred predominance of methanotrophic prokaryotes [64]
Aztec calendar (sunstone) Mesoamerican chronology divides the history of prehispanic Mesoamerica into several periods: the Paleo-Indian (first human habitation until 3500 BCE); the Archaic (before 2600 BCE), the Preclassic or Formative (2500 BCE – 250 CE), the Classic (250–900 CE), and the Postclassic (900–1521 CE); as well as the post European contact Colonial Period (1521–1821), and ...
When the Archean began, the Earth's heat flow was nearly three times as high as it is today, and it was still twice the current level at the transition from the Archean to the Proterozoic (2,500 Ma). The extra heat was partly remnant heat from planetary accretion , from the formation of the metallic core , and partly arose from the decay of ...
List of years; Timelines of world history; List of timelines; Chronology; See calendar and list of calendars for other groupings of years.; See history, history by period, and periodization for different organizations of historical events.
Neoarchean: 2,800 2,500 era Archean ICS Plumb, 1991 Neocomian: 145.5 125.0/130.0 epoch obsolete Neocomium, Latin name for Neuchâtel: Thurmann, 1835 Neogene: 23.0 2.588 period Cenozoic ICS Hoernes, 1856 Neoproterozoic: 1,000 542.0 ± 1.0 era ICS Hofmann, 1987 Neporatan: 2.5 1.7 age Pleistocene Eastern Europe Esu, 1980 Neustrian: 55.0 50.8 ELMMZ ...