Answered: Uranium-lead (U-Pb) dating of…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Uranium-lead (U-Pb) dating of geological samples is one of the oldest and most refined radiometric dating methods, able to determine ages of about 1 million years to over 4.5 billion years with precision in the 0.1–1% range. The U-Pb dating method relies on two separate decay chains, one of which is the actinium series from ²³⁵U to ²⁰⁷Pb, with a half-life of 704 million years.

Geologists unearth a sample of zircon that appears to be a closed system. They find 0.714 grams of ²⁰⁷Pb for 1.000 grams of ²³⁵U present. Approximately how old is the sample?

_______ yrs

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