E 

 o 



Q- 

 UJ 

 O 



O 

 LU 

 CO 







239.240 p,_jp^/g 



20 40 60 



80 



TT 



A 



(«) 



A 



(§) 



A 



^ 



A 



(§) 



A 



10 - 



A 



15 



20 



25 



A 

 _(§A 



(§) 



(§) 



® 



(§) 



(i)LYD0NIA CANYON AXIS (627m) 

 ACONTINENTAL SLOPE (630m) 



Figure 16. Activity of p1utonium-239/-240 with depth in sediment cores from 

 the axis of Lydonia Canyon and from the continental slope (canyon core 4769, 

 40° 23.87'N, 67° 40.13'W; Slope core 4772, 40° 09.43'N, 68° 20.12'W). 



Inventories are 3.2 mCi/km^ and 1.3 mCi/km^ respectively. 



- 49 - 



