Misc {GCDkit} | R Documentation |
Calculates a series of useful geochemical indexes.
Misc(WR)
WR |
a numerical matrix; the whole-rock data to be recalculated. |
Various petrochemical indexes are calculated, such as:
total iron as Fe2O3
/FeO, Na2O/K2O and K2O/Na2O ratios
Larsen's DI - Differentiation index (Larsen 1938)
Kuno's SI - Solidification index (Kuno 1959)
Agpaitic index (Ussing 1912)
A numeric matrix 'results
'.
Vojtech Janousek, vojtech.janousek@geology.cz
Kuno H (1959) Origin of Cenozoic petrographic provinces of Japan and surrounding
provinces. Bull Volcanol 20: 37-76
Larsen E S (1938) Some new variation diagrams for groups of igneous rocks. J Geol 46: 505-520
Sorensen H (1997) The agpaitic rocks; an overview. Min Mag 61: 485-498
Ussing N V (1912) Geology of the country around Sulianehaab, Greenland. Meddr Grolnland, 38: 1-426