DESCRIPTION OF SAMPLES 

 on cruise Vn of the Carnegie in the Pacific --Continued 



21 



Sampler 

 and con- 

 tainer used 



Field notes 



Nearest previous samples 



Ross snapper; 

 vial and 18-oz. 

 bottle 



muddy water, and left-hand 

 thermometer and brass tube 

 were missing. End of wire for 

 4 m was torn and chafed, show- 

 ing it had been caught in crevice 

 on bottom. Snapper jaws badly 

 bent at end, and fragments of 

 black manganese-coated obsid- 

 ian were mixed with globigerina 

 ooze. Snapper fairly full 



None 



Ross snapper; 2 Brown chocolate clay and sand 

 vials and 18-oz. 

 bottle 



None 



Meteor tube; Used Meteor tube-sampler for 



2 vials first time. Got 24 -in. sample 



with water in top of glass tube 

 (only vial of top of section and 

 vial of bottom of section saved) 



Albatross 4517 (p. 56); 25° 50.9' S, 109° 12.5' W. 

 1723 fathoms. CaC03=63.55 per cent. Many 

 species of pelagic forams, numerous small in- 

 dividuals. Augite, magnetite, microlites of basic 

 plagioclase, dark brown clay with minute mineral 

 particles 



Ross snapper; 

 vial and 18-oz. 

 bottle 



Good bottom sample. Hard red- 

 dish-brown clay -mud 



None 



Ross snapper; Snapper no. 3 had not closed, but 

 vial and 18- stiff red clay stuck to inside of 



oz. bottle both jaws. Good sample 



None 



Ross snapper; 

 vial and 18- 

 oz. bottle 



Red clay 



Challenger 294 (p. 128); 39° 22' S, 93° 46' W. 2270 

 fathoms. Red clay; CaC03=trace (more CaC03 in 

 lower part of core). Pelagic foraminitera and coc- 



Sample 20. (Top) In addition to pelagic foraminifera, very few of which are broken, there are a few flakes 

 of plant material and echinoid spines in sand grades. Silt grades contain numerous manganese-iron 

 grains. (Bottom) Same as top of core. 



Sample 21. Contains more broken pelagic foraminifera than last sample. Benthonic foraminifera are com- 

 mon (Cassidulina fava noticeable). A few flakes of plant material, manganese grains, sponge spicules, 

 echinoid spines, ostracod tests are present. Some of pelagic foraminifera, notably Globigerina trunca- 

 tulinoides . exhibit recrystallization. 



Sample 22. Very high in manganese, iron, and phosphate. Contains relatively more benthonic foraminifera 

 than any other sample except no. 31. Most of pelagic foraminifera are broken. Numerous manganese 

 grains are present in sand grades, in addition to radiolaria, twinned crystals of phillipsite, euhedral 

 crystals of magnetite, plagioclase feldspar and basaltic hornblende, also many ellipsoidal and flat pellets, 

 possibly formed in mechanical analysis. Fine material is very difficult to disperse. Manganese grains 

 contain as nuclei aggregates of white, acid volcanic glass shards (index of refraction about 1.50). 



Sample 23. Large proportion of pelagic foraminifera are broken, some exhibit recrystallization. Benthonic 

 foraminifera and manganese grains are abundant in sand grades, also present are sponge spicules, echi- 

 noid spines, ostracods, wlJte vesicular pumice, subrounded, polished quartz grains, and greenish fine- 

 grained mica schist fragments. Manganese grains contain nuclei of acid volcanic glass. 



