Archive image from page 190 of The depths of the ocean. 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 depthsofoceangen00murr Year: 1912 124. Krithe producta, Brady. From the bottom-deposits (magnified). Fig. 125. From the bottom-deposits (magnified). composition of the same rocks that gave rise to the clayey matter—and a com- paratively small amount of clay may give a clayeycharacter to the deposit. The oxides of iron Manganese and manganese are '°''- w


Archive image from page 190 of The depths of the ocean. 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 depthsofoceangen00murr Year: 1912 124. Krithe producta, Brady. From the bottom-deposits (magnified). Fig. 125. From the bottom-deposits (magnified). composition of the same rocks that gave rise to the clayey matter—and a com- paratively small amount of clay may give a clayeycharacter to the deposit. The oxides of iron Manganese and manganese are '°''- widely distributed in Cythere dictyon, Brady. , ,. marine deposits, and especially in deep-sea deposits. They occur in minute grains, and act as colouring matter in nearly all deep-sea clays, and in certain abyssal regions of the ocean they form con- cretions of larger or smaller size, which are among the most striking characteristics of the oceanic Red clay. Sometimes the oxides cover consolidated masses of tufa, fragments of rocks, portions of the deposit, branches of coral and other


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