Olduvai
Olduvai A normal polarity subchron which occurs within the Matuyama reversed chron. It is dated at 1.76–1.98 Ma (Bowen, 1978).
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Matuyama , Matuyama A reversed polarity chron at the end of the Pliocene and the beginning of the Pleistocene. It is preceded by the Gauss and followed by the B… Normal , nor·mal / ˈnôrməl/ • adj. 1. conforming to a standard; usual, typical, or expected: it's quite normal for puppies to bolt their food | normal working… ma non troppo , ma •aargh, Accra, afar, ah, aha, aide-mémoire, ajar, Alcazar, are, Armagh, armoire, Artois, au revoir, baa, bah, bar, barre, bazaar, beaux-arts, Beka… Date , date1 / dāt/ • n. 1. the day of the month or year as specified by a number. ∎ a particular day or year when a given event occurred or will occur: sig… Priscoan , Priscoan The first of the three subdivisions of Precambrian time, lasting from the formation of the Earth to 4000 Ma ago ( Harland et al., 1989), and… Neogene , Neogene The later of the two periods which comprise the Tertiary sub-Era, preceded by the Palaeogene, followed by the Quaternary, and dated at 23.3–1…
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Olduvai