Hadean Ocean Carbonate Geochemistry
  • 【DOI】

    10.1023/A:1009632230875

  • 【摘要】

    Relatively soon (sim0.2 Ga) after the Earthformed, it is likely that major oceans appeared in ahot (展开>>Relatively soon (sim0.2 Ga) after the Earthformed, it is likely that major oceans appeared in ahot (sim100°C) reducing environment where carbondioxide was probably the dominant atmospheric gas,with PCO2, values reaching perhaps in excess of 10atm. During the Hadean Eon between 4.3 and 3.8 Ga BP,major changes in the concentration of atmosphericCO2 and associated temperature changes had aprofound influence on the carbonate geochemistry ofthe Hadean Ocean. Although no rocks are known to havesurvived prior to the Archean Eon, it is stillpossible to calculate approximate values for importantseawater parameters during the Hadean Eon based onother sources of information and reasonableassumptions about processes such as weatheringreactions.Our calculations are based on a linear temperaturechange from 100°C to 70° 收起<<

  • 【作者】

  • 【刊期】

    Aquatic Geochemistry 1998年3-4期

  • 【语种】

    eng