Radiogenic Tracers.

Eisenhauer, Anton (2016) Radiogenic Tracers. In: Encyclopedia of Marine Geosciences. , ed. by Harff, J., Meschede, M., Petersen, Sven and Thiede, Jörn. Springer, Dordrecht, pp. 699-700. ISBN 978-94-007-6239-4 DOI 10.1007/978-94-007-6644-0_90-4.

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Isotopes can be characterized to be stable, cosmogenic, radioactive, or radiogenic. Stable isotopes do not change their relative abundance in the environment as long as no isotopes are added or extracted from the system. Cosmogenic isotopes are produced by high energetic cosmic rays in the upper layers of the atmosphere and are usually radioactive also. Radioactive isotopes change their abundance in the environment according to their half-life (T1/2), whereas radiogenic isotopes are not radioactive itself but change their abundance according to the half-life of their mother isotope. There are several important radiogenic systems known, and the most important are 238U/206Pb, 190Pt/186Os, 147Sm/143Nd, 87Rb/87Sr, 187Re/187Os, 176Lu/176Hf, 232Th/208Pb, 40 K/40Ar, 40 K/40Ca, 235U/207Pb, 129I/129Xe, 10Be/10B, 26Al/26 Mg, 36Cl/36Ar, 14C/14 N, etc. For the geological sciences, the most important radiogenic isotope systems are the radiogenic system ...

Document Type: Book chapter
Additional Information: Die Printausg. der Enzyklopädie ist in der GEOMAR-Bibliothek vorhanden.
Keywords: Dating, Isotopes, Stratigraphy, Tracers
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-MG Marine Geosystems
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1007/978-94-007-6644-0_90-4
Date Deposited: 19 Sep 2016 07:34
Last Modified: 19 Jan 2018 12:39

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