The Diagenesis of Biogenic Silica: Chemical Transformations Occurring in the Water Column, Seabed, and Crust
نویسنده
چکیده
B the concentration of “reactive” biogenic silica per volume of sediment (mol cm) C the pore-water silicate concentration (mol cm) Cs the pore-water asymptotic silicate value observed at depth in the sediment column (mol cm) DB sediment bioturbation coefficient (cm yr) Ds the molecular diffusion coefficient for silicate in the seabed corrected for tortuosity effects (cm of sediment y) k the dissolution rate constant for biogenic silica (yr) z depth in the sediment column (cm) mM micromolar F the sediment porosity (volume porewater/volume total sediment) 7.04.
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