Table 6.5 



Composition of Mississippi Sound Sediments 

 Used in Present Entrainment Experiments 



SITE #(see Fig. 1.3) 





POSITION 

 LONG. 

 LAT. 

 DATE 



89°08.5 

 30°16.6 

 9/25/80 



88°26.1 

 30°14.9 

 9/28/80 



88°33.7 

 30°20.4 

 9/25/80 



88°46.5 

 30°16.3 

 9/25/80 



% 



H,0 



60 





70 



75 





20(?) 





SAND 



22 





28 



8 





95 



% 



SILT 



31 





21 



29 





1.6 





CLAY 



47 





51 



63 





3.2 





TYPE 



SILTY 

 CLAY 





SANDY 

 CLAY 



CLAY 





SAND 





SMECTITE 

 (MONTMORILLONITE) 



79 





78 



68 





58 



% 



KAOLINITE 



9 





17 



21 





15 





. ILLITE 



12 





5 



11 





27 



% 



TOC 



1.148 





1.061 



2.575 





2.040 



Expei 



'^imental Procedure 















In most of our experiments, the procedure is as follows. Enough 

 sediments are first mixed with water to make a slurry. The sieved slurry is 

 then placed in the flume to achieve a 4 cm thick sediment bed. A constant 

 depth of 7.6 cm of water is then filled on top of the sediments. The 

 sediments are then completely resuspended and mixed by the rotating ring and 

 allowed to settle and compact for a period between 1 to 10 days until it 

 reaches the desired level of compactness. To perform the entrainment 

 experiment, the ring rotation rate is set for a desired shear stress and 



148 



