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Relevance of Cathodoluminescence for the Interpretation of U-Pb Zircon Ages, with an Example of an Application to a Study of Zircons from the Saxonian Granulite Complex, Germany

  • Ulf Kempe
  • Torsten Gruner
  • Lutz Nasdala
  • Dieter Wolf
Chapter

Abstract

In the last few years, an increasing number of papers dealing with applications of cathodoluminescence (CL) imaging — using both optical microscopes (0M-CL) and systems operating with secondary electron microscopes (SEM) or electron microprobes (SEM-CL) — to investigate the internal structures of zircon have been published. CL has been demonstrated to be a powerful tool for investigating zircons. This method yields high-resolution images of internal structures that often cannot be detected with other techniques (e.g., HF etching, Normarski interference). In most previous publications, CL images were interpreted assuming that CL is exclusively generated within the micro-areas that are irradiated with the electron beam (e.g., Hanchar and Miller 1993; Vavra et al. 1996). We want to demonstrate here that this assumption may in several cases lead to some misinterpretation of the internal structure of zircon.

Keywords

Back Scatter Electron Mafic Granulite Rare Earth Element Secondary Electron Microscope Metamict Zircon 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • Ulf Kempe
  • Torsten Gruner
  • Lutz Nasdala
  • Dieter Wolf

There are no affiliations available

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