Trondhjemite

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Trondhjemite is a leucocratic (light-colored) intrusive igneous rock. It is a tonalite variety with high albite and low anorthite and orthoclase content.

Trondhjemite is common in Archean terranes occurring in conjunction with tonalite and granodiorite as the TTG (tonalite-trondhjemite-granodiorite) orto-gneiss suite.

[edit] References

  • Best, Myron G. (2002) Igneous and Metamorphic Petrology, Blackwell Publishing, 2nd ed. ISBN 1-4051-0588-7


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