Journal ArticleDOI
Geochemistry of barium in pelagic sediments
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TLDR
In this article, high concentrations and accumulation rates of Ba occur on active (spreading) ridges, and in some areas of high biological productivity, and these patterns show that Ba is deposited on the deep sea floor by both volcanic and biological processes.About:
This article is published in Lithos.The article was published on 1973-01-01. It has received 52 citations till now. The article focuses on the topics: Pelagic sediment & Deep sea.read more
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Discrete suspended particles of barite and the barium cycle in the open ocean
TL;DR: In this paper, it was shown that biochemical processes are involved in the formation of the BaSO4 mineral in the water column, rather than purely chemical processes, which would not be anticipated for purely chemical interactions.
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Glacial to Interglacial Fluctuations in Productivity in the Equatorial Pacific as Indicated by Marine Barite
TL;DR: An empirical correlation between marine barite (BaSO4) accumulation rate in core-top sediment samples from two equatorial Pacific transects (at 140°W and 110°W) and the estimated primary productivity of the overlying water column were used to evaluate glacial to interglacial changes in productivity as discussed by the authors.
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Biogenic barium fluxes to the deep sea: Implications for paleoproductivity reconstruction
TL;DR: In this paper, the authors show that dissolved Ba concentration is not an important factor in regulating the flux of bio-Ba to the seafloor, and instead, the high Corg/bio-Ba ratios found in the western Atlantic, the Panama Basin, the Arabian Sea, and some stations in the Nordic Seas result from the addition of refractory organic carbon from nearby continents, shelves, or slopes.
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Barite–Celestine Geochemistry and Environments of Formation
TL;DR: A review of the chemical and isotopic composition of barite and celestine and the geological environments in which these minerals form are discussed near the end of this chapter as discussed by the authors, and some health risks are associated with barite.
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Redistribution and geochemical behaviour of redox-sensitive elements around S1, the most recent eastern Mediterranean sapropel
TL;DR: In this article, the distribution of redox-sensitive elements above, in and below the sharply defined, organic-rich unit reveal that S 1 has already suffered heavy diagenetic alteration.
References
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Journal ArticleDOI
Chemistry of Pacific pelagic sediments
TL;DR: The chemical and mineralogical composition of pelagic sediments from the East Pacific Ocean has been determined with the aim of defining the ultimate sources and the mechanisms of formation of the solid phases.
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A model for the evolution of strontium and lead isotopes in a dynamic Earth
TL;DR: In this article, a steady-state model for the evolution of the earth's crust and upper mantle has been proposed, where the oceans, continents, and mantle have been nearly constant for at least the last 2.5 b.y.
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Sea-Floor Spreading and the Cenozoic History of the East-Central Pacific
TL;DR: In this paper, the authors show that magnetic anomalies associated with the East Pacific Ridge near the equator are of limited value because of the extremely low amplitudes of the anomalies generated by the ridge, and although identification of individual anomalies is tenuous at best, comparison of relative amplitudes and shapes with computed models offers limited support of the hypothesis of Francheteau and others.