Processes which modify the composition of primary magmas

  • Marjorie Wilson


In Chapter 3 we discussed the origins of the spectrum of primary basic and ultrabasic magmas generated by partial melting processes within the upper mantle. Once such magmas have segregated from their source region they may undergo a variety of complex fractionation, mixing and contamination processes en route to the surface, during transport and subsequent storage in high-level magma chambers. These processes are of fundamental importance in producing the diversity of igneous rocks presently exposed at the Earth’s surface.


Magma Chamber Fractional Crystallization Wall Rock Basaltic Magma Crustal Contamination 
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Further reading

  1. Best, M. G. 1982, Igneous and metamorphic petrology, New York: W. H. Freeman 630 pp.Google Scholar
  2. Cox, K. G., J. D. Bell, R. J. Pankhurst 1979. The interpretation of igneous rocks. London: Allen and Unwin, 450 pp.Google Scholar
  3. Maaloe, S. 1985, Igneous Petrology. Berlin: Springer-Verlag, 374 pp.CrossRefGoogle Scholar
  4. McBirney, A. R., R. M. Noyes 1979. Crystallisation and layering of the Skaergaard intrusion. J. Petrol. 20, 487–554.Google Scholar
  5. Turner, J. S., I. H. Campbell 1986. Convection and mixing in magma chambers. Earth Sic. Rev. 23, 255–352.CrossRefGoogle Scholar
  6. Wager, L. R., G. M. Brown 1968. Layered igneous rocks. Edinburgh: Oliver and Boyd, 588 pp.Google Scholar

Copyright information

© Springer 2007

Authors and Affiliations

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

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