Density-related sedimentological parameters

Table 558Xu. Sediment core 558, 0 - 1 cm (Lake Saggat, station no. 18). Vertical variation in some selected, density -related values (radiographically calculated). E.o.p. = effective overburden pressure.

Depth in cm	Solids, mg/cm³	Solids, cum. g/cm²	Bulk density	E.o.p., g/cm²	Porosity in %	Void ratio
0.05	001	0.000	1.001	0.000	99.9	342.52
0.10	003	0.000	1.002	0.000	99.9	269.11
0.15	007	0.001	1.005	0.000	99.7	179.33
0.20	021	0.002	1.013	0.001	99.2	85.37
0.25	035	0.003	1.022	0.002	98.7	56.66
0.30	072	0.007	1.045	0.004	97.3	29.90
0.35	087	0.011	1.055	0.007	96.8	24.91
0.40	096	0.016	1.060	0.010	96.4	22.84
0.45	100	0.021	1.062	0.013	96.3	22.10
0.50	101	0.026	1.063	0.016	96.3	21.79
0.55	107	0.032	1.066	0.020	96.1	20.76
0.60	112	0.037	1.070	0.023	95.9	19.87
0.65	115	0.043	1.071	0.027	95.8	19.38
0.70	119	0.049	1.074	0.030	95.6	18.82
0.75	123	0.055	1.076	0.034	95.5	18.22
0.80	126	0.062	1.078	0.038	95.4	17.84
0.85	128	0.068	1.080	0.042	95.3	17.52
0.90	131	0.075	1.082	0.046	95.2	17.13
0.95	135	0.081	1.084	0.050	95.0	16.70
1.00	138	0.088	1.086	0.055	94.9	16.33

The vertical variation in density-related sedimentological parameters is calculated from the variations in the film density along the radiation images of the sediment cores and the aluminium wedge (used for density calibration). The accuracy of the calculations increases with decreasing density of the deposits, since the results are a function of the difference in density between bottom water and sediment.