Table 3. Synoptic table of bottom samples collected 



Sam- 

 ple 



Sta- 

 tion 



Date 



Position 



and 

 depth in 

 meters 



Type of sample 



Estimated 

 CaC03 con- 

 tent in per 

 cent; basis 

 of estimate 



Color and physical characters 



88 



89 



Callao 



harbor 



Peru 



Hanga 



Rua,, 



Easter 



Island 



1930 

 Between 

 Jan. 13 



and 

 Feb. 6 



12 00 S 

 77 00 W 



27 00 S 

 109 00 W 



9 



Gray mud 



Volcanic calcar- 

 eous sand 



4; acid solu- 

 ble CaO 



70; acid 

 soluble CaO 



None 



None 



Sample 89. Contains over 5 per cent MgCOs; 70 per cent of sample consists of calcareous organisms: 

 madreporarian corals 15 per cent; coralline algae 12 per cent, Halimeda 3 per cent, foraminifera 10 per 

 cent, gastropods 10 per cent, pelecypods 10 per cent, echinoid spines 8 per cent, tunicate spicules 1 per 



280 



