5. Geochemical studies showed no evidence 

 of mercury or petroleum pollution and sug- 

 gested no anomalous values of other elements. 

 The organic fraction was dominated by land- 

 derived plant debris. 



ACKNOWLEDGMENTS 



I wish to express my appreciation for the 

 efforts of my fellow scientists, Captain 

 Roberge, and the officers and crew aboard the 

 GLACIER, without whose efforts this study 

 could not have been conducted. Vernon E. 

 Swanson performed the organic geochemical 

 analysis; Kam Leong determined the heavy 

 metal contents in the surface sediments. 



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