Pleistocene


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Pleistocene

of, denoting, or formed in the first epoch of the Quaternary period, which lasted for about 1 600 000 years. It was characterized by extensive glaciations of the N hemisphere and the evolutionary development of humans

Pleistocene

 

the first division, corresponding to the longest epoch, of the Anthropogenic (Quaternary) period. The Pleistocene is characterized by a general cooling of the earth’s climate and periodic occurrence of extensive continental glaciation in the middle latitudes. Some researchers, including the Soviet geologist V. I. Gromov, classify the beginning of the Pleistocene as a separate epoch preceding the Pleistocene proper. This separate epoch, called the Eopleistocene, includes the Upper (Late) Pliocene, which is classified by most researchers in the Neogene.

The term “Pleistocene” was proposed in 1832 by the British geologist C. Lyell for the marine deposits immediately preceding deposits of the modern period because of the predominance of presently existing forms of fauna in these deposits.

Pleistocene

[′plī·stə‚sēn]
(geology)
The older of the two epochs of the Quaternary Period, spanning about 1.8 million to 10,000 years ago. It represents the interval of geological time (and rocks accumulated during that time) extending from the end of the Pliocene Epoch (and the end of Tertiary Period) to the start of the Holocene Epoch. It is commonly characterized as an epoch when the earth entered its most recent phase of widespread glaciation. Also known as Ice Age; Oiluvium.
References in periodicals archive ?
Mots cles: Pleistocene, Yukon, ile Herschel, paleontologie, Beringie, mammiferes, fossiles, glaciation de Buckland, plateforme de Beaufort, chronologie
"So far the discoveries from this site in central Oman do not show any influence from the Horn of Africa during the Pleistocene thus the immigration theories through the Ban Al Mandeb do not hold much credence," said Biubwa, who has been working with the archaeology department for nearly two decades.
The thickness of Pleistocene and Holocene deposits varies in the 60-200 metres range.
floresiensis has overturned the idea that 'Middle Pleistocene hominids have always been denied the ability to manipulate their world' (p.95).
Furthermore, Pleistocene humans would undoubtedly have had different problems to which to adapt--problems particular to their ecology and culture, both long gone to us--hence leaving us no chance of knowing which problems are truly the same for everyone.
We know of no Pliocene records of amphiumids, but Pleistocene (Rancholabrean NALMA) occurrences are well documented from Florida and Texas (e.g., 11) and from Georgia (12).
The skullcap, found in the Salkhit Valley northeast Mongolia is, to date, the only Pleistocene hominin fossil found in the country.
The lithofacies associations suggest that Bostan Formation was deposited by gravelly braided channels which formed a large delta on the shore line of Pleistocene Bostan Lake.
Yet I'd be remiss if I failed to reveal that sometimes I backslide, a throwback to Pleistocene caveman curmudgeon, grunting and struggling.