. The depths of the ocean; a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic. Oceanography. iv DEPTHS AND DEPOSITS OF being apparently removed through the THE OCEAN 165 m. Fig. 140.—Diatom Ooze. Valdivia" Station 140, Southern Ocean, lat. 54° long. 220 13'.2 E., 2207 fathoms (magnified) 2' S., Fig. 141.—Radiolarian Ooze. Valdivia" Station 237, Indian Ocean, lat. 40 45' long. 480 58'. 6 E., 2772 fathoms (magnified). solvent action of sea- water, and with in- creasing depth the
. The depths of the ocean; a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic. Oceanography. iv DEPTHS AND DEPOSITS OF being apparently removed through the THE OCEAN 165 m. Fig. 140.—Diatom Ooze. Valdivia" Station 140, Southern Ocean, lat. 54° long. 220 13'.2 E., 2207 fathoms (magnified) 2' S., Fig. 141.—Radiolarian Ooze. Valdivia" Station 237, Indian Ocean, lat. 40 45' long. 480 58'. 6 E., 2772 fathoms (magnified). solvent action of sea- water, and with in- creasing depth the Globigerina ooze passes gradually into another pelagic type, usually Red clay. Diatom Ooze.—We Diatom ooze. have indicated that in the colder regions of the ocean, as in the great circumpolar Southern Ocean and along the northern border of the Pacific, diatoms flourish abun- dantly in the surface waters, and where de- trital matters are not very large in amount their dead frustules, falling to the bottom, make up a large part of the deposit called Diatom ooze (see Fig. 140V ' g Radiolarian Ooze Radiolarian (see Fig. 141) has not ooze- been recorded from the Atlantic Ocean, but is characteristic of deep water in the tropical regions of the Pacific and Indian Oceans, where the surface waters have rather a low salinity and carry clayey matter in sus- pension. It may ' be regarded as a variety of Red clay containing 1 It may be noted that Flint has recorded Diatom ooze from the tropical Pacific, but his samples have since been examined and classed by us as Radiolarian Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Murray, John, Sir, 1841-1914; Hjort, Johan, 1869-. London Macmillan
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