Fig. 15
From: Geochemical approaches to the quantification of dispersed volcanic ash in marine sediment
Site 444, VARIMAX factor scores from QFA. (Left) Three-factor model. (Right) Four-factor model. As described in the text, Factor 1 is most likely an intermediate crustal source, Factors 2 and/or 3 are most likely dacitic source(s) and Factor 4 is a Nb-rich end member