DESCRIPTION OF SAMPLES 



on cruise VII of the Carnegie in the Paclfic--Contiiiued 



27 



Sampler 

 and con- 

 tainer used 



Field notes 



Nearest previous samples 



Ross snapper; Snapper not closed, spring too 

 vial tight. Thimble full of black 



ooze back of clappers 



None 



Ross snapper 



Sigsbee tube; 

 18-oz. bottle 

 and vial 



Ross snapper; 

 18-oz. botUe 

 and vial 



Snapper closed, but nearly all the 

 white-sand ooze had washed out 

 while hauling in 



Snapper not closed, and sample 

 washed out. Sent do\^'n Sigsbee 

 tube; good sample black mud 



Snapper, readjusted to hair trigger, 

 closed and brought up good sam- 

 ple, light brown clay and sand 



None 



Albatross 4726 (p. 67); 12° 30' S, 111° 42.2' W. 

 1700 fathoms. Globigerina ooze; CaC03=68 per 

 cent. Pelagic and few benthonic foraminifera, 

 brown clay residue very rich in manganese and 

 limonite grains; few remains of diatoms and 

 sponge spicules; minute mineral particles 



None 



Ross snapper; 

 18-oz. bottle 

 and vial 



Snapper closed. One -third full of 

 hard, gray sand and ooze 



None 



Sigsbee tube; 

 18-oz. bottle 

 and vial 



Ross snapper; 

 18-oz. bottle 

 and vial 



Good sample; gray globigerina 

 ooze 



Chocolate mud and ooze. 

 Snapper full 



Albatross 4534 (p. 71); 13°51'S, 126° 53.5' W. 2185 

 fathoms. Globigerina ooze. CaC03=72.7 per cent. 

 Pelagic and few bottom-living foraminifera; choco- 

 late-brown flocculent clayey residue, niunerous 

 very small phUlipsite crystals, few manganese 



, grains, and angular splinters of colorless glass 



Albatross 4532 (p. 70); 18° 29.4' S, 130° 50.8' W. 

 2319 fathoms. Red clay, CaC03=18 per cent. 

 Pelagic and bottom-living foraminifera and fish 

 teeth; very dark brown flocculent clay residue; 

 great abundance of phUlipsite crystals, few man- 

 ganese grains, and angular splinters of colorless 

 glass 



Sample 43. Sand grades consist almost entirely of pelagic foraminifera, about one-fourth of which are 

 broken. The mechanical analysis shows two maxima in the sand and clay grades respectively, and the 

 calciiun carbonate content is similarly distributed, indicating two sources of calcareous material. Sili- 

 ceous organic remains are common, and very small twinned crystals of phillipsite are rare consittuents 

 of sand grades. 



Sample 44. Coarse sand grades consist largely of remains of pelagic foraminifera, many of which are 

 broken or considerably recrystallized, together with benthonic foraminifera, ostracods, echinoid spines, 

 fish teeth, some siliceous remains, including radiolaria, sponge spicules, and arenaceous foraminifera, 

 few manganese grains, large subhedral grains of fresh plagioclase feldspar, and one of basaltic horn- 

 blende, &th over 1 mm long. The fine sand grades contain many twinned crystals and aggregates of 

 phillipsite (identified by X-ray powder diagrams) in addition to the above. The clayey material of this 

 sample is quite flocculent; it consists largely of small irregularly shaped grains of calcite, together with 

 some small calcite spherules and rectangular plates, numerous horseshoe-shaped coccoliths, fragments 

 of globigerina shells, large single and some twinned crystals of phillipsite, rounded reddish grains (iron 

 oxide), mottled reddish aggregates (beidellite?), and crescent-shaped shards of brown altered volcanic 

 glass. 



