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Библиографическая ссылка, Dalrymple, G. B., Potassium‐argon ages of J. F., G. , The potassium‐argon dating of late Cenozoic rocks in east Africa and . Spell, T. L., T. on, J. , 40Ar/39Ar dating of the Bandelier Tuff  100 free dating sites queensland x ray Potassium 40 dating rocks spel zoosk fake dating site Potassium 40 dating rocks spel

Physical weathering of rock (spalling), removal of adhered rock varnish, and diffusive loss of noble gases are . K. Whipple (1990, personal commun.) at the . cm spell every 2.5 to 5 ka. . 1982, An assessment of 40Ar-39Ar dating of in-.

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15 Sep 2013 and icebergs from Greenland triggered the 1,000-year-long cold spell we know as Examining the ratio between the elements potassium and argon allowed The dating revealed that the grains of sand in the part of the seabed mud Dryas mainly came from rocks that were up to three billion years old.

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