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Das Alter von Graniten und Gneisen |
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| Authors: | Jäger Emilie |
| Institution: | (1) Present address: Mineralogisch-Petrographisches Institut der Universität Bern, Sahlistraße 6, Bern, Schweiz |
| Abstract: | Summary In this paper the interpretation of isotopic age data is discussed. It is shown that in many cases the measured age results do not date geological events which are considered by geologists to be the age of a rock or a mineral. These age data must often be ascribed to other periods of the evolution of rocks.Several examples of Rb-Sr age results on rocks and minerals from the Alps are discussed. It is shown that even with a great number of age data available it is impossible to date the time of metamorphism. On the other side detailed information of the cooling history of the Alps is given by Rb-Sr age results, which cannot be studied by classical geological methods. Mit 1 Textabbildung Herrn Prof. Dr.H. Leitmeier zum 80. Geburtstag gewidmet. |
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