. 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 origin, derived AND DEPOSITS OF THE OCEAN 145 from (1) the decomposition of terrestrial and submarine rocks, (2) extra- terrestrial sources, (3) pro- ducts synthesized at the bottom of the sea. Organic remains belong- Materials of ing to the vegetable kingdom or§anic ori§in- are on the whole compara- tively rare on the sea-floor, when compared with those belonging to the animal kingdom
. 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 origin, derived AND DEPOSITS OF THE OCEAN 145 from (1) the decomposition of terrestrial and submarine rocks, (2) extra- terrestrial sources, (3) pro- ducts synthesized at the bottom of the sea. Organic remains belong- Materials of ing to the vegetable kingdom or§anic ori§in- are on the whole compara- tively rare on the sea-floor, when compared with those belonging to the animal kingdom ; still, in the neigh- bourhood of land, vegetable matter, branches of trees, piant remains leaves, fruits, etc., may be1!1™*™16 . . J deposits. carried into deep water. Fig. 108. Discosphara thomsoni, Ostenfeld. (-*-°Too). remains of sea-weeds in coral-reef re- gions, the re- mains of algae which lived on the reefs, such as Lithotham- nium and Coral- Una, occur in the deposits in the vicinity. But the most con- stant compon- ents of vegetable origin are the remains of algae, which secreted either calcium carbonate or silica from the surface waters of the ocean to form their hard From the surface growing through the agency of large rivers, storms, off-shore winds, etc., along with the in shallow water. Similarly. 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
Size: 1588px × 1572px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublisherlondo, bookyear1912
