Model sedimentation

Coetzee, P.P., Gouws, K., Pluddemann, S., Yacoby, M., Howell, S. and Drijver, L. den (1995) Evaluation of sequential extraction procedures for metal speciation in model sediments. Water SA, 21, 51-60. 

The premature sulfide extraction effect also implies that model sediments spiked with high amounts of sulfide phases may not adequately show this... 

Jensen, K., Sloth, N.P., Rysgaard-Petersen, N., Rysgaard, S., and Revsbech, N.P. (1994) Estimation of nitrification and denitrification from microprofiles of oxygen and nitrate in model sediments. Appl. Environ. Microbiol. 60, 2094—2100. 

Parameters Used to Model Sediment Incubation Experiments... 

Fig. 6.1.3. Evolution of the sulfuretum in a model sediment (modified and redrawn from Jorgensen and Fenchel, 1974). Figures in brackets are the mean pool sizes in /Jmol cm on days 7, 19, 41 and 76 of the experiment. Other figures are the mean fluxes in /nmol cm d between these days.

Figure CO2 consumption rate (Q) during the hydrate accumulation for different model sediments (Wi 10%) l- sand, 2- sand with 7% of kaolinite clay, 3- sand with 7 Vo of montmorillonite clay...

The majority of adsorption studies deal with the interactions between metal ions and either real or model sediment phases. Amorphous FeCOH), hydrous MnO.. clays (bentonite, illite, kaolinite), SiO., Al Oj and organic matter (often humic substances) are the solid phases most frequently studied. 

In general, the bioassay results must be interpreted in relation to the field situations and site-specific data. In section 6.5, a conceptional model "Sediment Triad" (Chapman, 1986), which combines data from bulk sediment chemistry, bioassay and in-situ studies, is presented. 

Thickness of modeled sediment interval, usually the intensively bioturbated zone... 

Dykstra J (1987) Compaction correction for burial history curves applications to Lopatin s method for source rock maturation determination. Geobyte 2(4) i6-z3 Espitalie J (1986) Use of as maturation index for different types of organic matter. Comparison with vitrinite reflectance. Therm. Model. Sediment. Basins. 1st IFP Explor. Res. Conf. Carcans. June 3-7, Paris, p 475-496... 

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