Eocene$25347$ - meaning and definition. What is Eocene$25347$
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What (who) is Eocene$25347$ - definition

SECOND EPOCH OF THE PALEOGENE PERIOD
Eocene Epoch; Late Eocene period; Eocene epoch; Middle Eocene; Late Eocene; Geiseltalian; Upper Eocene; Eocenic; Eocene Climatic Optimum; Middle Eocene Climatic Optimum; Eocene age; Mid-Eocene; Climate of the Eocene
  • French National Museum of Natural History]], [[Paris]]
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Paleocene–Eocene Thermal Maximum         
  • Climate change during the last 65 million years as expressed by the oxygen isotope composition of benthic foraminifera. The Paleocene-Eocene thermal maximum (PETM) is characterized by a brief but prominent excursion, attributed to rapid warming. Note that the excursion is understated in this graph due to the smoothing of data.
  • ''[[Azolla]]'' floating ferns, fossils of this genus indicate [[subtropic]]al weather at the North Pole
  • A stacked record of temperatures and ice volume in the deep ocean through the Mesozoic and Cenozoic periods.<br />LPTM— Paleocene-Eocene thermal maximum<br />OAEs— oceanic anoxic events<br />MME— mid-Maastrichtian event
RAPID (IN GEOLOGICAL TERMS) GLOBAL WARMING, PROFOUND CHANGES IN ECOSYSTEMS, AND MAJOR PERTURBATIONS IN THE CARBON CYCLE WHICH STARTED ABOUT 55.0 MILLION YEARS AGO
Paleocene-Eocene thermal maximum; Palaeocene-Eocene Thermal Maximum; Paleocene-Eocene warming; Petm; Palaeocene-Eocene Temperature Maximum; PETM; Paleocene-Eocene Thermal Maximum; Palaeocene–Eocene Thermal Maximum; Paleocene eocene thermal maximum; Paleocene–Eocene thermal maximum; Initial Eocene Thermal Maximum; EECO
The Paleocene–Eocene thermal maximum (PETM), alternatively (ETM1), and formerly known as the "Initial Eocene" or "", was a time period with a more than 5–8 °C global average temperature rise across the event. This climate event occurred at the time boundary of the Paleocene and Eocene geological epochs.
Eocene         
·noun The Eocene formation.
II. Eocene ·adj Pertaining to the first in time of the three subdivisions into which the Tertiary formation is divided by geologists, and alluding to the approximation in its life to that of the present era; as, Eocene deposits.
Eocene         
['i:?(?)si:n]
¦ adjective Geology relating to or denoting the second epoch of the Tertiary period (between the Palaeocene and Oligocene epochs, 56.5 to 35.4 million years ago), a time when the first horses, bats, and whales appeared.
Origin
C19: from Gk eos 'dawn' + kainos 'new'.

Wikipedia

Eocene

The Eocene (IPA: EE-ə-seen, EE-oh-) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name Eocene comes from the Ancient Greek ἠώς (ēṓs, "dawn") and καινός (kainós, "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch.

The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope 13C in the atmosphere was exceptionally low in comparison with the more common isotope 12C. The end is set at a major extinction event called the Grande Coupure (the "Great Break" in continuity) or the Eocene–Oligocene extinction event, which may be related to the impact of one or more large bolides in Siberia and in what is now Chesapeake Bay. As with other geologic periods, the strata that define the start and end of the epoch are well identified, though their exact dates are slightly uncertain.