. The Earth beneath the sea : History . Fig. 35. Variation of carbon and nitrogen concentrations with depth in core Sw 39 from the Galapagos area. The stratigraphic subdivision of this sequence is shown in Fig. 37, and the absokite age of the stratigraphic units is indicated in Fig. 38. (From Arrhenius, 1952.) unpubhshed). Complete fading of the color has occurred in pelagic fish debris of Tertiary age. Variations in geological time of the rate of accumulation of organic matter, large enough to overshadow the diagenetic effects, and the effects of varying dilution with calcium carbonate, have
. The Earth beneath the sea : History . Fig. 35. Variation of carbon and nitrogen concentrations with depth in core Sw 39 from the Galapagos area. The stratigraphic subdivision of this sequence is shown in Fig. 37, and the absokite age of the stratigraphic units is indicated in Fig. 38. (From Arrhenius, 1952.) unpubhshed). Complete fading of the color has occurred in pelagic fish debris of Tertiary age. Variations in geological time of the rate of accumulation of organic matter, large enough to overshadow the diagenetic effects, and the effects of varying dilution with calcium carbonate, have been found only below areas of excep- tionally high productivity such as at the eastern end of the equatorial current system in the Pacific. In this area the ensuing sedimentary strata, representing times of low and high organic productivity at the surface of the ocean, differ by a factor of two in their content of carbon and nitrogen (Fig. 35). A similar stratification might be expected below the Peru Current and the Kuroshio. 24—s. Ill
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Keywords: ., bookcentury1900, bookcollectionbiodivers, booksubjectoceanbottom
