10 



JAMES CHUMLEY 



(REP. OF THE "MICHAEL SARS" NORTH 



UPPER PORTION. 



GLOBIGERINA OOZE: gray, a little lighter in colour than 

 the lower portion, slightly coherent, granular. 

 CALCIUM CARBONATE (58-14 per Cent.):— Small pelagic 

 Foraminifera and a few bottom-living forms, 

 Echinoid spines, Ostracods, coccoliths and a 

 few coccospheres. 

 RESIDUE (41-86 per cent.): — 



Siliceous Organisms [1 percent.]; Sponge spi- 

 cules, imperfect casts. 

 Minerals [30 percent.]; more variable in size and 

 generally more rounded and larger than those 

 in the lower portion, quartz tinged red, quartz 

 with green choloritic tinge, minute fragments 

 of black and red slaggy lava, decomposed 

 ferruginous mineral, volcanic glass, tourma- 

 line, magnetite, biotite, chalcedony, purple- 

 brown augite, orthoclase; a doubtful grain 

 of glauconite observed. 

 Fine Washings [10-86 per cent.]; amorphous 

 clayey matter with minute mineral particles. 

 Note: The material from the sounding-tube formed 

 a section about 9 inches long, and was interesting be- 

 cause of the difference between the upper and lower 

 portions. No very distinct separation-line could be ob- 

 served, but the upper portion to the extent of three or 

 four inches was decidedly more granular and less coherent, 

 and contained a much higher percentage of calcium car- 

 bonate than the lower portion. Rock fragments were 

 scattered throughout the whole length of the section, and 

 the proportion of mineral particles exceeding 0-05 mm. in 

 diameter seemed much the same throughout. It thus 

 appears that at this place there is a Blue Mud containing 

 only 26 per cent, of calcium carbonate overlain to the 

 depth of three or four inches by a Globigerina Ooze 

 containing 58 per cent, of calcium carbonate. It is inter- 

 esting to note also that numerous coccoliths and a few 

 coccospheres were observed in the upper portion, but 

 could not be recognised after continued search in the lower 

 portion. The smaller amount of calcium carbonate in the 

 lower portion is apparently balanced by a proportionately 

 larger amount of amorphous clayey matter. 



"Michael Sars" Station 101. 6tli-7th August, 1910. 

 Lat. 57°41'N., Long. 11°48'W.; Depth— 1853 m. (1013fms.). 



From this station Dr. Peach records a fragment of 

 flaggy sandstone, four inches in length. 



"Michael Sars" Station 102. 9th-10th August, 1910. 

 Lat. 60°57'N., Long. 4° 38' W. ; Depth— 1098 m. (600 fms.). 



BLUE MUD: dark gray with tinge of brown, coherent. 

 CALCIUM CARBONATE (10-07 per cent.): — small pelagic 

 Foraminifera, bottom-living Foraminifera, frag- 

 ments of Mollusc shells and of Echinoid spines. 

 RESIDUE (89-93 per cent.): — 



Siliceous Organisms [1 per cent.] ; fragments of 

 arenaceous Foraminifera, Diatoms, glaucon- 

 itic casts. 

 Minerals [60 percent.]; angular and rounded, 

 m.di. 0-2 mm., fragments of rocks, (granite, 

 sandstone, schist, limestone, etc., the largest 

 half an inch in diameter), quartz, felspar, 

 mica, magnetite, volcanic glass. 

 Fine Washings [28-93 per cent.]; amorphous 

 clayey matter with many minute mineral 

 particles. 



"Michael Sars" Station 102. 9th-10tli August, 1910. 

 Lat. arbTN.. Long. 4''38'VV.; Depth- 1.500 m. (820 fms.). 



The material from this station consists of a rock 

 fragment about 1 V'2 by 1 inch, (to which arenaceous Fora- 

 minifera and Sponges are attached) and a few smaller 

 fragments. 



"Michael Sars" Station 114. 12th-13tli August, 1910. 

 Lat. fir 8' N., Long. 3° 16' W.; Depth— 1047 in. (571 fms.). 



BLUE MUD: dark gray with tinge of brown, coherent. 

 CALCIUM CARBONATE (11-2 per Cent.): — pelagic and 

 bottom-living Foraminifera, coccoliths, one or 

 two coccospheres. 

 RESIDUE (88-8 per cent.): — 



Siliceous Organisms [1 per cent.]; Sponge spic- 

 ules, Diatoms, arenaceous Foraminifera. 

 Minerals [30 per cent.]; angular and rounded, 

 m.di. 0-2 mm.; mostly quartz, decomposed 

 felspar, decomposed ferruginous mineral, 

 hornblende, mica. 

 Fine Washings [57-8 per cent.]; amorphous 

 clayey matter with minute mineral particles. 



Note: Only a small amount of material was avail- 

 able from this Station, consisting of a pellet of the mud 

 with numerous rock fragments, on one of which (a frag- 

 ment of banded sandstone, three-quarters of an inch in 

 diameter) an arenaceous Foraminifer was growing. 



