48 



CLIS REF: 1979-1985 



>300 



§. 250-300 



Q. 



^ 200-250 



o 



'■JS 150-200 



] 

 3 



P 





N=94 (Zn, Cu) 

 N=52 (Cd) 



tZ 



' 



§j 100-150 



a 











i 



§ 50-100 



g||i 











wmw 



^/////////////////M 



<50 







20 40 60 80 



Percent of Samples 



100 



□ Zn 



iCu 



|Cd(x100) 



Figure 4-3. Trace metal (Zn, Cu, Cd) concentration frequency distribution of samples 

 from the CLIS Reference Station (CLIS REF), cumulated over the years 

 1979-1985 



Sediment Core Chemistry Data Summary from the MQR Mound, August and December 1991 



