ORGANIC DEPOSITS 



941 



Summary of Analysis of organic Composition of Sample No. 27337, from 

 Mii?Tay Island, Australia 



Numbers of grains of different organisms counted 



Fine gravel . . . . 

 Coarse sand . . . 

 Medium sand . . 



Fine sand 



Very fine sand. 



Total . . . 



39 

 56 

 11 

 21 

 6 



133 













nd 















d 

 fl 





-i3 «H 







m 





50 





be 



CO 



03 



0) K 



c3 



O) 



^ 1 

 S 1 



w 





r^ 



o 



§t| c5 



C3 



fl 



S 



n 



o 



o 



o 



o 



.2 





o 



1^ 







O i 



31 



29 



5 



4 



2 











58 



20 



2 



1 



1 



3 



2 





1 



20 



5 



. . 



. . 



1 



1 



. . 



. . 



1 



20 



9 



• . . 



. . 



. , 



2 



. . 



1 





11 



2 





5 



4 



6 



2 



1 



o 



140 



65 



7 



110 



141 



39 



53 



19 



365 



II. Calculated percentage by 



weight of different organisms present 



Fine gravel .... 



Coarse sand 



Medium sand . . 



Fine sand 



Very fine sand. 



9.4 

 19.3 



3.8 



9.8 



.2 



42.5 



6.3 



13.3 



6.2 



8.4 

 .4 



6.5 

 3.3 

 1.5 

 3.8 

 .1 



0.8 

 .4 



1.2 



0.5 

 .1 



.6 



0.2 

 .3 

 .3 



• * 

 .8 



oV6 

 2 



.7 



1.5 



0.4 

 .4 



0.6 

 .6 



oVi 



" * 



Total ... 



34.6 



15.2 



97.6 



III. Calculated percentage chemical composition by organisms 



CaCOs 



38.0 



34.4 



15.2 



1.0 



0.6 



0.7 



1.3 



0.3 



0.6 



0.2 



92.3 



MgCOs 



4.2 



2 



.0 



.2 



.0 



.1 



2 



.1 



.0 



.0 



5.0 



CaSO^ 



.3 





















.3 



CaPoOs 









• • 













^ • ' 





IV. Calculated percentage chemical composition by size portiom- 



Fine gravel . . . 

 Coarse sand . . 

 Medium sand. 

 Fine sand. . . . , 

 Verv fine sand 



Silt. 

 Clay. 



Total 



Per cent 

 present. 



23.6 

 37.9 

 12.2 

 23.2 



.7 



97.6 



.7 



1.2 



99.5 



CaCO.. MgCOn 



22.40 

 35.55 

 11.70 

 22.00 

 .65 



92, 

 1 

 1 



93, 



1.10 

 2.20 



.50 

 1.15 



.05 



5.00 



Tr. 



Tr. 



.0 



CaSO,. 



0.3 



0.3 



0.3 



Ca,P,0, 



Tr. 

 Tr. 



Tr. 



