| 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
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'. 
Vojtěch Janoušek, vojtech.janousek@geology.cz
Kuno H (1959) Origin of Cenozoic petrographic provinces of Japan and surrounding
 
provinces. Bull Volcanol 20: 37-76
Larsen ES (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 NV (1912) Geology of the country around Sulianehaab, Greenland. Meddr Grolnland, 38: 1-426
    sampleDataset("sazava")
    
    Misc(WR)