Abstract
The chemical compositions of 140 deep-sea sediment samples collected in the Pacific Ocean were determined by INAA and ICP-OES methods in order to study the relationship between elemental abundances and the environment of their sedimentation. In particular, we observed horizontal changes along the longitude of 170°W across the Pacific. In calcareous ooze, there is a positive relationship between Ca content and Sr content. However, the Mg content is influenced more by basic rock detritus than by biogenic carbonate. Our observations of red clays suggest: (1) The Ti/Al ratio is a good indicator of the contribution of mafic rock detritus. (2) The hydrogenous component of pelagic sediments is characterized by high Co and Mn content, but not high V content. Fe content is influenced primary by basic rock detritus. (3) There is a good correlation between P content and Cu content. High P and Cu contents are characteristic of the high primary production zones in pelagic areas, for example, the equatorial zone. The Mn content is also considered to be influenced by the primary productivity of overlying surface water.
Published Version
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