Experiments Regarding the Sulfide Formation in Sediments 681 



c 

 a; 

 E 



V) 

 "Z 



O 



(/) 

 E 



i 1,0 



0,5 



2/ 



^3 



8 A 



7 1A 3 

 time in days 



U 



28 



Fig. 5. Chemical alterations and bacterial numbers in homogenized sedi- 

 ments, stored in containers. A— Experiments conducted in Texas and stored 

 at 30 C. B — Experiments conducted in Helgoland, Germany and stored at 

 18 C. a = aerobic, b = anaerobic, c = bacteria producing PL S from organic 

 sources, d = sulfate-reducing bacteria, e = organic carbon. 1 = product 

 of sulfide, sulfate and pyrite-sulfur. 2 = sulfide-sulfur, 3 = sulfate-sulfur, 



4 = pyrite-sulfur. 



