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Dans le passé, les essais de datation radiométrique ont fourni un âge de 1250 ± 34 Ma pour le corps minéralisé de Gaertner, et de 1350 ± 4 Ma pour le corps minéralisé de Deilmann, ces âges datent le plus ancien évènement de minéralisation.

Preliminary stratigraphic studies and radiometric dating indicate an Early Wisconsinan age between 70 000 and 80 000 BP for the site.

Er bestaat een groot aantal verschillende methoden, elk gebruikmakend van een ander isotopensysteem, en elk verschillend in onzekerheidsmarges, kosten en de tijdschaal waarop ze toepasbaar zijn.The most precise method of dating rocks, in which the relative percentages of ‘parent’ and ‘daughter’ isotopes of a given radioactive element are estimated.Early methods relied on uranium and thorium minerals, but potassium–argon, rubidium–strontium, samarium–neodymium, and carbon-14–carbon-12 are now of considerable importance.Elegant refinements of the geological time scale occur by combining the 3 approaches - biostratigraphy based on the fossil record, radiometric dating of suitable materials, including volcanic ash falls and magnetic reversals.Trois techniques permettent le calibrage perfectionné de la chronologie géologique : la biostratigraphie, reposant sur le registre fossile; la datation radiométrique de matériaux appropriés, y compris les nappes de cendres volcaniques; et l'étude des inversions magnétiques.




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