Acknowledgments 



This work was supported by the office of Naval Research under grant NR 

 083-290. 



The marine sediments were kindly provided by Peter Barnes and his 

 colleagues of the U.S. Geological Survey, Menlo Park, California. 



We thank the U.S. Coast Guard for providing the Cutter Glacier in the 

 WEBSEC 72-73 cruises. Thanks are accorded Gaiy Hufford, the coordinator 

 of these cruises, and Gregory Adam, Richard Bowman, William Gale, John 

 Krezoski, Bruce Rutland, Alex Watt, and Dan Wolfe, Coast Guard marine 

 science technicians who contributed importantly in sample collections. 



By means of logistic support provided by the Naval Arctic Research 

 Laboratory, Barrow, Alaska, the snows and certain river waters were gathered 

 and we especiallv thank Richard Dickerson and James Aikins for their 

 assistance in this regard. 



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