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 



45 



85 



46 



86 



17 36 S 



141 55 W 



2132 m 



Globigerina ooze? 90; inspection 



(Dr 



)r^ pale 

 15'2f(Y-C 



le pinkish-cinnamon 

 ''f(Y-O); (moist) between 

 avellaneous and wood-brown 

 173a(0-Y) 

 Clayey sand ( U.S.B.S. class = 

 sandy loam): shellsof foramini- 

 fera; when wet, slightly coher- 

 ent, granular; when dry, mod- 

 erately coherent, pulverulent 

 granular 



(Dry) fuscous 134k(OY-0) 

 Manganese nodules up to 1 cm in 

 diameter partly covered with 

 small unbroken shells of pelag- 

 ic foraminifera 



47 



87 



11 



(Moist) between bister and sepia 



162m(Y-0, O-Y) 

 (Dry) clay; coherent, brittle 



48 94 Apr. 22 



12 47S 



171 35 W 



4760 m 



Red clay 



< 10; inspec- (Dry) between light drab and 

 tion avellaneous 173"V2b(0-Y) 



Clay; moderately coherent, pul- 

 verulent 



49 



96 



26 



6 47 S 



172 23 W 



5269 m 



Red clay 



<1; total CO2 (Moist) between snuff-brown and 

 bister 152i(Y-0); (dry) avella- 

 neous 173b (O-Y) 

 Clay (U.S.B.S. class = clay); co- 

 herent, brittle 



50 97 28 3 47 S Red clay < 10; inspec- (Dry) between Saccardo's umber 



172 39 S tion and buffy-brown 172"l/2j(o.Y) 



5253 m Color of coarser fraction (dry) 



between avellaneous and light 

 drab 173-V2b(0-Y) 

 Silty clay; moderately coherent, 

 pulverulent, somewhat gritty 



Sample 45. Sand grades are similar to sample 44, except that a greater proportion of pelagic shells are 

 unbroken and phillipsite crystals and aggregates are less common. The silt and clay grades apparently 

 contain much more calcium carbonate than sample 44. 



Sample 46. The estimate of CaC03 content for this region is based on the fact that the small tests of 

 pelagic foraminifera found on the manganese nodules are unbroken and fresh in appearance. 



Sample 47. Well-formed, ovoid-shaped pellets of fine material, usually containing fragments of foraminif- 

 eral shells and sometimes cemented together by a coating of manganese, predominate in the coarser sand 

 grades. Benthonic foraminifera make up a large part of the calcium carbonate content, together with bro- 

 ken shells of pelagic foraminifera, fish teeth, and unidentified calcareous materials; sponge spicules are 

 also present. Manganese grains, volcanic rock fragments, palagonite and phillipsite are common, where- 

 as biotite, feldspar, and hornblende are rare constituents of the sand grades. 



Sample 48. The sample is very fine-grained but too small for mechanical analysis. Contains radiolaria, 

 sponge spicules, coccoliths, and unidentified, irregular-shaped calcareous material, as well as basic 



268 



