Cu Pb Ni Co Mn As Zn Th Sr V Cr Ba Cu 1                       Pb 0.8 1                     Ni 0.86 .95* 1                   Co 0.654 0.77 0.6 1                 Mn .90* 0.86 0.86 0.82 1               As 0.762 0.32 0.56 0.1 0.6 1             Zn .937* 0.67 0.84 0.36 0.76 .89* 1           Th -.89* -0.5 -0.55 -0.7 -0.8 -0.7 -0.8 1         Sr 0.751 0.73 0.64 .93* .93* 0.38 0.52 -0.75 1       V .91* 0.84 .93* 0.6 .95* 0.74 .89* -0.68 0.76 1     Cr 0.91 .93* .97** 0.7 .95* 0.62 0.85 -0.66 0.78 .98** 1   Ba .939* 0.64 0.66 0.62 0.79 0.67 0.82 -.98** 0.72 0.72 0.7 1 *Correlation is significant at the 0.05 level (2-tailed). **Correlation is significant at the 0.01 level (2-tailed)

Table 4: Correlation matrix for selected metals in stream sediments.