Geodynamic classification of intermediate magmatic rocks based on geochemical data

New “tectonomagmatic” discriminant diagrams are suggested to identify, based on geochemical data on rocks, geodynamic environments in which intermediate magmatic rocks were formed. The diagrams are underlain by discriminant analysis of reference selections of chemical analyses of intermediate magmat...

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Bibliographic Details
Published in:Petrology 2015-09, Vol.23 (5), p.413-420
Main Authors: Velikoslavinskii, S. D., Krylov, D. P.
Format: Article
Language:English
Subjects:
Classification
Earth and Environmental Science
Earth Sciences
Geochemistry
Islands
Mineralogy
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Summary:New “tectonomagmatic” discriminant diagrams are suggested to identify, based on geochemical data on rocks, geodynamic environments in which intermediate magmatic rocks were formed. The diagrams are underlain by discriminant analysis of reference selections of chemical analyses of intermediate magmatic rocks from modern island arcs ( n = 7787) and from intraplate ( n = 4344) and postcollisional ( n = 3207) magmatic associations. The application of the diagrams makes it possible to reliably classify approximately 70% analyses of intermediate rocks.
ISSN:0869-5911
1556-2085
DOI:10.1134/S0869591115050057