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Source for the last 83 million years: Cande and Kent, 1995. [1] ... 4.800 4.890 3n.3n Sidufjall 4.980 5.230 ... 17.277 17.615 5Dn 18.281 18.781
[1] [2] Estimations vary as to the abruptness of the reversal. A 2004 paper estimated that it took over several thousand years; [ 3 ] a 2010 paper estimated that it occurred more quickly, [ 4 ] [ 5 ] [ 6 ] perhaps within a human lifetime; [ 7 ] a 2019 paper estimated that the reversal lasted 22,000 years.
1 million Current glass objects in the environment will be decomposed. [184] Various public monuments composed of hard granite will have eroded by one metre, in a moderate climate and assuming a rate of 1 Bubnoff unit (1 mm in 1,000 years, or ≈1 inch in 25,000 years). [185]
About 31,709 years. megaannum: 10 6 yr: Also called "megayear". 1000 millennia (plural of millennium), or 1 million years (in geology, abbreviated as Ma). petasecond: 10 15 s: About 31 709 791 years. galactic year: 2.3 × 10 8 yr: The amount of time it takes the Solar System to orbit the center of the Milky Way Galaxy (approx 230 000 000 years ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 20 January 2025. See also: Orders of magnitude (numbers) and Long and short scales Natural number 1000000000 List of numbers Integers ← 10 0 10 1 10 2 10 3 10 4 10 5 10 6 10 7 10 8 10 9 Cardinal One billion (short scale) One thousand million, or one milliard (long scale) Ordinal One billionth (short ...
A nearly complete and intact dinosaur skeleton has been excavated in France. The specimen is a Titanosaur, one of the largest dinosaurs of its time.
See calendar and list of calendars for other groupings of years. See history , history by period , and periodization for different organizations of historical events. For earlier time periods, see Timeline of the Big Bang , Geologic time scale , Timeline of evolution , and Logarithmic timeline .
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