5. Geochemistry
Average major and trace element compositions by group and
lithotype are listed in Table 2, on an anhydrous basis. Average REE
data are given inTable 3. All geochemical plots and comparisons were
made after normalization of the data to 100%. The normalization
factors were also applied to the trace element data. Individual XRF
analyses are included as supplementary data inAppendix 2; individual REE analyses are listed inAppendix 3.