ATLANT. DEEP-SEA EXPED. 1910 VOL. I| 



DEPOSIT-SAMPLES 



■Michael Sars" Station 25 A. 7th May, 1910. 

 Lat. 35° 36' N., Long. 8" 25' W.; Dcpth-23()0 m. (1256 fms.). 



GLOBIGERINA OOZE: fawn colour, finely granular, 



coherent. 



CALCIUM CARBONATE (50.73 per cent.):— pelagic and 



bottom-living Foraminifera, Ostracods, Pteropod 



fragments, coccoliths, one or two rhabdoliths. 



RESIDUE (49.27 per cent.): — 



Siliceous Organisms [1 per cent.]; Sponge 

 spicules, small fragments of arenaceous 

 Foraminifera. 

 Minerals [1 per cent.]; angular and rounded, 

 m. di. 0.07 mm., quartz, plagioclase, volcanic 

 glass, mica. 

 Fine Washings [47.27 percent.]; clayey matter 

 with minute mineral particles. 



Note: A section of deposit about 2^h inches in 

 length of uniform appearance throughout came up in the 

 sounding-tube. 



•Midiael Sars" Station 25 B. 8tli May, 1910. 

 Lat. 35" 46' N., Long. 8" 16' W.; Depth— 2055 m. (1122 fms.). 



GLOBIGERINA OOZE: fawn colour, finely granular, 



coherent. 

 CALCIUM CARBONATE (40-73 per cent.):— pelagic and 



bottom-living Foraminifera, Echinoid spines, 



Pteropod fragments, coccoliths, one or two 



rhabdoliths. 

 RESIDUE (59-27 per cent.): — 



Siliceous Organisms [1 percent.]; Sponge spicu- 

 les, fragments of areuaceous Foraminifera. 



Minerals [1 per cent.]; angular and rounded, 

 m. di. 0.07 mm., quartz, decomposed glass, 

 decomposed ferruginous mineral, plagioclase, 

 magnetite (?). 



Fine Washings [57-27 per cent.]; clayey matter 

 with minute mineral particles. 



Note: A section of deposit about 2V4 inches in 

 length of uniform appearance throughout came up in the 

 sounding-tube. The trawl brought up a large bag of 

 material, which upon examination did not differ from the 

 sample described from the sounding-tube, an analysis 

 giving 37-05 per cent, of calcium carbonate. 



From this station Dr. Peach records four large spec- 

 imens of Balanus porcatus, and the two valves of an 

 American oyster evidently thrown overboard from an 

 Atlantic liner. 



•Michael Sars* Station 34. 13tli-14th May, 1910. 

 Lat. 28° 52' N., Long. 14' 16' W.; Depth — 2170 m. (1185 fms.). 

 PTEROPOD OOZE: fawn coloured, coherent. 



CALCIUM CARBONATE (71-48 per cent.):— pelagic and 

 bottom-living Foraminifera, Pteropods, Hetero- 

 *pods, and fragments of other Molluscs, Ostra- 

 cods, Tunicate spicules, coccoliths and rhabdo- 

 liths. 

 RESIDUE (28-52 per cent.): — 



Siliceous Organisms [3 per cent.]; Sponge 

 spicules, arenaceous Foraminifera, Diatoms, 

 Radiolnria, imperfect casts. 

 Minerals [10 per cent.]; angular, m. di. 0-11 

 mm., principally brown volcanic glass, some 

 pieces vesicular, others with a minute cor- 

 ded structure showing slightly birefringent 

 fibres; quartz, orthoclase, plagioclase, augite, 

 hematite, magnetite, mica, and a doubtful 

 green mineral. 

 Fine Washings [15-52 per cent.]; amorphous 

 clayey matter, with small mineral particles. 

 Note: The sounding-tube brought up a roll about 

 11 inches in length, which appeared fairly uniform through- 

 out, having the usual fawn colour characteristic of a 

 Globigerina or Pteropod Ooze; the Pteropods could be 

 quite plainly seen at the upper end. About the middle 

 of the roll, i. e. about 6 inches below the upper surface, 

 dark patches were visible which upon e.vamination pro- 

 ved to contain a large proportion of volcanic glass quite 

 fresh and unaltered, as though the products of a volcanic 

 eruption (probably submarine, since the glassy frag- 

 ments show no trace of friction but are perfectly angular) 

 had been overlain by new material to the depth of about 

 6 inches. 



"Michael Sars" Station 35. I8tli-19th May. 1910. 

 Lat. 27° 27' N., Long. 14 52' W.; Depth -2603 m. (1422 fms.). 



GLOBIGERINA OOZE: fawn coloured, finely granular, 

 coherent. 

 CALCIUM CARBONATE (52-08 per cent.):— pelagic and 

 bottom-living Foraminifera, Pteropod fragments, 

 coccoliths and rhabdoliths. 

 RESIDUE (47-92 per cent.):— 



Siliceous Organisms [1 per cent.]; Sponge 



spicules. 

 Minerals [3 per cent.]; angular and rounded, 



m. di. 0-07 mm., quartz, mica. 



Fine Washings [43-92 per cent.]; amorphous 



clayey matter with small mineral particles. 



Note: The material from the sounding-tube formed 



a roll about 7 inches in length, and in certain parts 



Pteropod fragments were visible to the naked eye. 



