An application of factor analysis to basic volcanic rock geochemistry
Tóm tắt
Factors analysis is useful for studying the interrelationships of trace and major elements in sets of rock analyses. Its application to basic volcanic rocks show various features: (i) the principal factors relate to variation among mineral components; (ii) the behaviour of K is similar to that of Rb, Ba, Sr and in some cases P, W, Tl also; (iii) the coherence of Tl with K and Rb is often masked by a secondary effect depending on petrography; (iv) in some rock-groupings Li and H2O− are closely associated; (v) an unexpected association is Na, P and Sr; (vi) factor-scores can be used to discriminate alkalic from subalkalic basalts, using various element combinations.
Tài liệu tham khảo
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