Sign up in 30 seconds and meet someone

Rb sr dating example

Published: 01.02.2017

Each example and homework data set is a separate tab in this Excel spreadsheet. We recognize two major types of meteorites: The result is essentially two "groups" of data the point of a pair are moved closer together by Gill's translation.

The Rb-Sr dating method has been used extensively in dating terrestrial and lunar rocks, and meteorites. If the initial amount of Sr is known or can be extrapolated, the age can be determined by measurement of the Rb and Sr concentrations and the 87Sr/86Sr ratio.

The natural radioactive series which involve lead as a daughter element do offer a mechanism to test the assumptions.

Skip to main content. Navigation menu Personal tools Not logged in Talk Contributions Create account Log in. Where the simple methods will produce an incorrect age, isochron methods will generally indicate the unsuitability of the object for dating. Although this is a potential source of error for terrestrial rocks, it is irrelevant for lunar rocks and meteorites, as there are no chemical weathering reactions in those environments. It is accompanied by hematite staining of the schists, the more intense hematite alteration in and near the reverse fault breccia being due to hematite replacement of chlorite.

Of the remainder, however, the overwhelming majority are well-aligned with the results that would be expected given the mainstream age and history of the Earth.


While isochrons are performed with that few data points, the best ones include a larger quantity of data. How is it explained if the "ages" are essentially random numbers? Parent isotope radioactive Daughter isotope stable Half-life y Decay constant 10 yr -1 10 Be 10 B 1. Silicification has also occurred in fault planes and within the Kombolgie Formation sandstone beneath the mineralization, particularly adjacent to the reverse fault.

    1. Vasa_Panin - 04.02.2017 in 19:16

      Sign Up Sign In Pricing Explore About Blog.

      Jonny_Gat - 08.02.2017 in 14:39

      If isochrons of negative slope which must be mixing lines were reasonably common, then we might suspect mixing to be an explanation for a significant fraction of all apparently valid "old" isochrons as well.

      Bel_Negr - 17.02.2017 in 00:50

      To the intriguing question "How old is the Earth? This problem cannot be overlooked, especially in evaluating the numerical time scale.

      Kirill_Radionov - 25.02.2017 in 02:19

      The greater the initial D -to- D i ratio, the further the initial horizontal line sits above the X-axis. One of the major drawbacks and, conversely, the most important use of utilizing Rb and Sr to derive a radiometric date is their relative mobility, especially in hydrothermal fluids.

    Add review

    Your e-mail will not be published. Required fields are marked *

    Privacy Policy - Terms of Use Contact Us
    Copyright © 2009-2017 All rights reserved.