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Microanalytical Characterization and Application in Magmatic Rocks

  • Naresh C. PantEmail author
Chapter
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Part of the Society of Earth Scientists Series book series (SESS)

Abstract

Chemical characterization of magmatic rocks is a primary requirement in interpreting their evolutionary history. Magmatic rocks are nearly always heterogeneous and thus require micro-scale chemical characterization. Two of the main micro-characterization techniques are Scanning Electron Microscopy (SEM) and Electron Probe Micro Analysis (EPMA). Both are near surface characterization techniques and utilize the effects of interaction of an electron beam with the targeted sample. Back Scattered Electrons (BSE) represent an atomic number dependent elastic scattering effect which provides high resolution petrographic information of heterogeneities while generation of characteristic X-rays from inner shell energy-level transitions of different atoms, a type of inelastic scattering effect, provides quantitative chemical characterization at micron scale. Both are highly useful for describing magmatic rocks as well as inferring the operative magmatic processes.

Keywords

Atomic Number Electron Probe Micro Analysis Magmatic Rock Back Scatter Electron Magmatic Process 
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.

Notes

Acknowledgments

Amitava Kundu and Sonalika Joshi, erstwhile colleagues from Geological Survey of India are acknowledged for numerous discussions and clarifications of many ideas. This contribution was possible on account of an invitation from Professor Santosh Kumar.

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  1. 1.Department of GeologyUniversity of DelhiDelhiIndia

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