Analytical Solutions for Diffusion and Early Diagenetic Reactions

Analytical Solutions for Diffusion and Early Diagenetic Reactions 

Decomposition of Organic Substance under Anoxic Conditions 

As expected, the sulfate concentration in solution initially decreases at a swift rate and, concomitantly, low amounts of methane already emerge. Only after the concentration of sulfate falls under a certain level, will methane be released in substantial amounts. The permanently maintained calcite equilibrium will result, due to precipitation, in the depression of the concentration of dissolved calcium ions (compare Schulz et al. 1994). 

The sequence of reactions, as described and modeled above, has naturally been well established and frequently documented ever since the publications made by Froelich et al. (1979). However, it should not be overlooked that these processes were not pre-determined for the modeling 

Analytical solutions for Tick s Second Law of Diffusion were already discussed in Chapter 3, Section 3.2.4, without taking diagenetic reaction into account. With a diffusion coefficient Djed, which describes the diffusion inside the pore cavity of sediments, Tick s Second Law of Diffusion is stated as  

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