Selected Topics for Further Research - Geomathematics: Theoretical Foundations, Applications and Future Developments - page 474

Fig. 12.6 Screeplot of
ordered eigenvalues derived
from principal component
analysis applied to the
log-centred Star kimberlite
dataset (Source: Grunsky
and Kjarsgaard 2008 ,
Fig. 6)

Kimberlite Suite Log-centred RQPCA

K
Rb
Na

Legend
eJF
mJF

AI

Crustal
Contamination

IJF
Pense
Cantuar

Ga

Yb

Si
Ni

Er

Ca

Fe

Co

Y

Cr

Mg

Kimberlite
Fractionation
Trend

Zr

P

Th
La

V

Ti

Nb

-1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6

C1

Fig. 12.7 Plot of PC1 versus PC2 scores and loadings of the log-centred Star kimberlite data set.
The loadings of the variables are plotted as the element symbols (Source: Grunsky and Kjarsgaard