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Quaternary - Wikipedia The Quaternary covers the time span of glaciations classified as the Pleistocene, and includes the present interglacial time-period, the Holocene This places the start of the Quaternary at the onset of Northern Hemisphere glaciation approximately 2 6 million years ago (mya)
Quaternary Period Information and Facts - National Geographic Climate change and the developments it spurs carry the narrative of the Quaternary, the most recent 2 6 million years of Earth's history Glaciers advance from the Poles and then retreat, carving
Quaternary (disambiguation) - Wikipedia Quaternary (disambiguation) Look up quartary or quaternary in Wiktionary, the free dictionary The Quaternary is a geologic period Quaternary (an adjective meaning "fourth in order" or "composed of four items") may also refer to: Quaternary (chemistry) (see also Quaternary compound and Quaternary phase) Quaternary structure of proteins
Quaternary - Climate, Flora, Fauna | Britannica The length of the Quaternary is short relative to geologic and evolutionary time scales, but the rate of evolutionary change during this period is high It is a basic tenet of ecology that disturbance increases diversity and ultimately leads to evolutionary pressures
Quaternary - New World Encyclopedia The Quaternary sub-era (or period) is the historically designated geologic time period extending from the end of the Pliocene epoch roughly 1 8–1 6 million years ago to the present The Quaternary is one subdivision of the Cenozoic era