400r 



300 



Q. 

 CL 



O 

 CD 



200 



100 



# 



^ 



/ 





I 



^ 



1981 



I , 



,.^ 







/ 



( ^ 



1982 



Figure 13. Concentration of barium in the fine fraction of material collected 

 in sediment traps deployed at the head of Lydonia Canyon on different 

 deployment dates. Traps were recovered just prior to the next deployment. 



- 44 



