The IUGS systematics of igneous rocks

@article{LeBas1991TheIS,
  title={The IUGS systematics of igneous rocks},
  author={M. J. Le Bas and Albert Streckeisen},
  journal={Journal of the Geological Society},
  year={1991},
  volume={148},
  pages={825 - 833}
}
In order to create a sustainable classification of igneous rocks which all geologists might use, an international body was set up by the IUGS: the IUGS Subcommission on the Systematics of Igneous Rocks. In the course of creating the classification, the Subcommission has established ten principles for its construction and for defining an appropriate nomenclature. The principles are: (1) use descriptive attributes; (2) use actual properties; (3) ensure suitability for all geologists; (4) use… 

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