Relation of present-day magmatism to global tectonic processes

  • Marjorie Wilson


Petrogenetic studies of igneous rocks involve characterization of the source regions of the magmas, the conditions of partial melting (Ch. 3), and the extent of subsequent modification of primary mantle derived magmas during transport and storage in high-level magma chambers (Ch. 4). Such studies must be based on sound field observations, involving careful mapping and sampling of the range of rock types exposed at a particular locality, and on a comprehensive knowledge of the petrography, major, minor and trace element and radiogenic and stable isotope geochemistry of the samples. Additionally, if the igneous activity is not recent, its age must be constrained, ideally by isotopic dating techniques.


Volcanic Rock Partial Melting Igneous Rock Tectonic Setting Active Continental Margin 
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Further Reading

  1. Cox, K. G., J. D. Bell R. J. Pankhurst 1979. The interpretation of igneous rocks. London: Allen and Unwin.Google Scholar
  2. Hutchison, C. S. 1983. Economic deposits and their tectonic setting. London: Macmillan.Google Scholar
  3. Irvine, T. N. W. R. A. Baragar 1971. A guide to the chemical classification of the common volcanic rocks. Can. J. Earth Sci. 8, 523–48.CrossRefGoogle Scholar
  4. Le Bas, M. J., R. W. Le Maitre, A. Streckeisen B. Zanettin (1986). A chemical classification of volcanic rocks based on the total alkali-silica diagram. J. Petrology 27, 745–50.Google Scholar
  5. Middlemost, E. A. K. 1975. The Basalt Clan. Earth Sci. Rev. 11, 337–64.CrossRefGoogle Scholar
  6. Middlemost, E. A. K. 1980. A contribution to the nomenclature and classification of volcanic rocks. Geol Mag. 117, 51–7.CrossRefGoogle Scholar

Copyright information

© Springer 2007

Authors and Affiliations

  • Marjorie Wilson
    • 1
  1. 1.Department of Earth SciencesUniversity of LeedsLeedsUK

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