e 



Q. 



cr 



I 



o 



z 



UJ 



> 



o 



o 

 o 



1.5 



EPA-SB-78 

 CRUISE 7 

 CORE 31' -3 



1.0- 



^ 0.5 











40 



80 

 TIME (hrs.) 



120 



160 



Figure 11. Concentration of soluble reactive silicon in water overlying 

 sediments stored without disturbance in a core liner collected from 

 Saninaw Bay, Lake Huron. Over about the first hundred hours, the 

 release of Si into overlying v/ater is essentially constant. 



216 



