38 



MARINE BOTTOM SAMPLES OF LAST CRUISE OF CARNEGIE 



Table 1 . 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 



81 



156 



1929 

 Nov. 



3 01 N Siliceous globig- 40; acid (Moist) partly pinkish-buff 



149 46 W erina ooze soluble CaO 172d{0-Y); partly Saccardo's 



4953 m umber 172k(0-Y). Sample has 



two colors but both parts have 

 same physical characters 

 SUty clay (U.S.B.S. class=clay); 

 small shells of foraminifera 

 and radiolarian tests; moder- 

 ately coherent, sticky, greasy 

 feel 



82 



157 



83 



158 



1 48 S 

 152 22 W 

 4693 m 



6 33S 



154 58 W 



4065 m 



Siliceous globig- 

 erina ooze 



Globigerina ooze 



85; acid (Dry) pale pinkish-cinnamon 



soluble CaO 152f(Y-0); (moist) vinaceous- 

 buff 173d(0-Y) 

 Sandy clay (U.S.B.S. class=clay); 

 shells of foraminifera and 

 radiolarian tests; when moist, 

 slightly coherent, crumbly; 

 when dry, moderately coher- 

 ent, pulverulent, gritty 



90; inspec- (Wet) between tUleul-buff and 



tion white 173g(0-Y) 



Sand; all foraminifera shells 

 and manganese grains; 

 incoherent 



84 159 



85 160 



11 



13 



9 24S 



159 01 W 



5545 m 



10 54 S 



161 53 W 



2614 m 



Red clay 



Globigerina ooze 



<5; inspec- (Dry) miumny-brown 17lm(0-Y) 

 tion Clay; coherent, brittle 



94; acid (Dry) pale pinkish-cinnamon 



soluble CaO 152f(Y-0); (moist) between 



vinaceous-buff and avellaneous 

 173c(0-Y) 

 Clayey sand (U.S.B.S. class=clay); 

 shells of foraminifera; slightly 

 coherent; when moist, crumbly, 

 granular; when dry, crumbly 



86 161 



87 162 



15 



17 



Sample 81. Sand grades consist almost entirely of remains of foraminifera, radlolaria, and other calcare- 

 ous and siliceous organisms, including sponge spicules, arenaceous foraminifera, diatoms, echinoid 

 spines, and fish teeth, but a few manganese grains are also present. Pronounced recrystalllzation is 

 evident in tests of Globorotalia tumida. Eighty-five per cent of the tests of pelagic foraminifera are 

 broken. 



Sample 82. Many species of calcareous and arenaceous benthonic foraminifera; also radlolaria, diatoms, 

 sponge spicules, fish teeth, echinoid spines, ostracods, are present in sand grades in addition to mostly 

 broken tests of pelagic foraminifera, the latter exhibiting some recrystalllzation, and coccoliths. 

 Inorganic constituents of sand size include manganese grains, fine-grained igneous rock fragments, 



