A possible geochemical mechanism of the conjugation of the carbon and calcium cycles in the ocean
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The geochemical balance of carbon in the ocean is considered for the conditions of constant carbonate alkalinity. It is shown that the intrabasin processes result in the annual transformation of 487 million t of organic carbon into calcium-magnesium carbonates, which is accompanied by the extraction of 1628 million t of calcium from silicates. It is concluded that the hypothesis of the reverse weathering based upon the notion of the inversion of the mineral formation processes in the ocean against the overland weathering processes requires a substantial correction.
KeywordsContinental Slope Carbonate Sediment Carbonate Carbon Magnesium Carbonate Carbonate Alkalinity
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- 1.O. A. Alekin and Yu. I. Lyakhin, Chemistry of the Ocean (Gidrometeoizdat, Leningrad, 1985) [in Russian].Google Scholar
- 2.R. Garrels and F. Mackenzie, Evolution of Sedimentary Rocks (Mir, Moscow, 1974) [in Russian].Google Scholar
- 3.Horne, R., Marine Chemistry, New York: Wiley, 1969.Google Scholar
- 4.V. S. Savenko, “Is the Ocean a Source of Atmospheric Carbon Dioxide?,” Geokhimiya, No. 11, 1634–1642 (1995).Google Scholar
- 5.V. S. Savenko, “CO2 Exchange between the Ocean and Atmosphere in the Past and Present,” Geochem. Int. 38(3), 313–316 (2000).Google Scholar
- 6.V. S. Savenko, “Geochemistry of the Continental Link of the Global Hydrological Cycle,” in Global Environmental Changes-2001 (Izd. Sib. Otd. Ros. Akad. Nauk, Novosibirsk, 2001), pp. 274–287 [in Russian].Google Scholar
- 7.J. C. Alt, J. Honnorez, C. Laverne, and R. Emmersonn, “Hydrothermal Alteration of a 1 Km Section Through the Upper Oceanic Crust. Deep Sea Drilling Project Hole 504B: Mineralogy, Chemistry and Evolution of Seawater-Basalt Interactions,” J. Geophys. Res. 91(10), 10309–10335 (1986).CrossRefGoogle Scholar
- 8.“Oceans Can’t Absorb Carbon Dioxide,” Geotimes 37(9), 6–7 (1992).Google Scholar