Table 1.
Descriptive statistics of major, minor and trace-element (MTE) composition of five preservation states identified. Values in ppm.
| Preservation State | Element | N total | Mean | S.D. | Minimum | Median | Maximum |
|---|---|---|---|---|---|---|---|
| WP-NL | Ca | 205 | 390,449.9 | 6880.8 | 372,632.4 | 391,045.6 | 406,978.5 |
| Mg | 3380.5 | 911.3 | 1218.3 | 3238.6 | 5886.3 | ||
| Sr | 1737.9 | 430.5 | 642.7 | 1767.3 | 2968.1 | ||
| Mn | 155.3 | 214.3 | 0.0 | 0.0 | 836.6 | ||
| Fe | 184.3 | 263.0 | 0.0 | 0.0 | 1026.2 | ||
| S | 1060.2 | 328.8 | 388.5 | 993.2 | 1894.4 | ||
| Na | 1038.2 | 358.4 | 0.0 | 1031.0 | 2202.8 | ||
| PP-NL | Ca | 20 | 372,422.6 | 29,616.5 | 269,479.6 | 380,938.4 | 400,052.1 |
| Mg | 4651.7 | 1876.9 | 645.3 | 5020.8 | 7273.4 | ||
| Sr | 1763.1 | 473.2 | 465.1 | 1839.2 | 2443.8 | ||
| Mn | 278.9 | 467.2 | 0.0 | 27.1 | 1828.1 | ||
| Fe | 955.4 | 1710.0 | 0.0 | 427.6 | 6499.1 | ||
| S | 1490.5 | 929.9 | 0.0 | 1620.0 | 3576.5 | ||
| Na | 926.0 | 574.8 | 0.0 | 997.6 | 2017.4 | ||
| WP-SL | Ca | 44 | 382,121.0 | 8596.2 | 365,870.4 | 382,139.2 | 398,808.4 |
| Mg | 4164.8 | 1044.6 | 2291.8 | 3959.4 | 6748.7 | ||
| Sr | 2208.9 | 444.7 | 1166.9 | 2262.0 | 3027.2 | ||
| Mn | 314.9 | 367.3 | 0.0 | 170.4 | 1332.3 | ||
| Fe | 371.2 | 408.2 | 0.0 | 268.2 | 1391.5 | ||
| S | 994.7 | 373.6 | 460.6 | 979.2 | 1974.5 | ||
| Na | 932.9 | 358.0 | 311.5 | 867.8 | 1713.3 | ||
| PP-SL | Ca | 80 | 378,873.3 | 141,25.2 | 313,975.9 | 383,615.3 | 398,608.2 |
| Mg | 4378.5 | 1468.8 | 1724.9 | 4010.6 | 9661.7 | ||
| Sr | 1975.1 | 501.0 | 879.4 | 1894.1 | 3729.1 | ||
| Mn | 125.0 | 220.3 | 0.0 | 0.0 | 1038.0 | ||
| Fe | 451.7 | 880.7 | 0.0 | 139.9 | 6499.1 | ||
| S | 1202.5 | 565.0 | 4.0 | 1125.4 | 3576.5 | ||
| Na | 920.4 | 378.3 | 29.7 | 934.5 | 2010.0 | ||
| PP-L | Ca | 15 | 382,641.0 | 8793.2 | 358,236.3 | 383,947.7 | 394,598.2 |
| Mg | 4829.2 | 1635.3 | 2249.6 | 4589.6 | 7786.0 | ||
| Sr | 1981.5 | 473.8 | 1217.7 | 2232.4 | 2765.1 | ||
| Mn | 582.0 | 292.4 | 302.1 | 457.0 | 1332.3 | ||
| Fe | 56.0 | 89.6 | 0.0 | 0.0 | 287.6 | ||
| S | 1264.5 | 462.3 | 596.7 | 1093.4 | 1918.4 | ||
| Na | 966.7 | 276.5 | 504.4 | 1023.5 | 1550.2 |
WP-NL: well-preserved, non-luminescent; PP-NL: poorly preserved non-luminescent; WP-SL: well-preserved, slightly luminescent; PP-SL: poorly preserved, slightly luminescent; PP-L: poorly preserved, luminescent; S.D. Standard deviation.