Spatiotemporal Variability of Ocean Chemistry in the Early Cambrian, South China

Table 1Geochemical data of the Sizhoushan and Dajiangbian Formation at the Sizhoushan section

Sample number / Formation / Subsection / Lithology / Deptha (m) / 13Ccarb (‰ VPDB) / 18Ocarb (‰ VPDB) / TOC (%) / 13Corg (‰ VPDB) / Al (ppm) / Ca (ppm) / Fe (ppm) / Mg (ppm) / Mn (ppm) / Sr (ppm) / Mg/Ca (wt/wt) / Fe/Sr (wt/wt) / Mn/Sr (wt/wt)
S0.1 / Sizhoushan / Shale / 13.1 / 0.241 / -28.3
S0.6 / Sizhoushan / Shale / 12.6 / 0.143 / -27.6
S1.2 / Sizhoushan / Shale / 12 / 0.357 / -30.8
S1.8 / Sizhoushan / Shale / 11.4 / 0.529 / -32.1
S4.8 / Sizhoushan / Shale / 8.4 / 0.051 / -17.4
S12.3 / Sizhoushan / Dolomite / 0.9 / -6.1 / -6.8 / 0.021 / -27.4 / 116 / 95185 / 7911 / 44793 / 6873 / 85 / 0.47 / 94 / 81
S12.5 / Sizhoushan / Dolomite / 0.7 / -3.8 / -6.8 / 0.023 / -26.3 / 308 / 133163 / 12949 / 65867 / 16867 / 86 / 0.49 / 150 / 196
S12.7 / Sizhoushan / Dolomite / 0.5 / -3.2 / -10.0 / 0.016 / -25.4 / 253 / 149341 / 15220 / 77725 / 15033 / 80 / 0.52 / 191 / 188
S13.2 / Sizhoushan / Dolomite / 0 / -4.6 / -9.5 / 0.016 / -27.2 / 115 / 103482 / 10491 / 53286 / 8973 / 87 / 0.51 / 120 / 103
Du0.0 / Dajiangbian / DJB3 / Shale / 7.4 / 0.246 / -29.5
Du0.6 / Dajiangbian / DJB3 / Shale / 6.8 / 1.779 / -30.2
Du1.1 / Dajiangbian / DJB3 / Shale / 6.3 / 1.365 / -30.2
Du1.7 / Dajiangbian / DJB3 / Shale / 5.7 / 1.406 / -29.1
Du2 / Dajiangbian / DJB3 / Shale / 5.4 / 0.670 / -29.6
Du3.1 / Dajiangbian / DJB3 / Shale / 4.3 / 1.725 / -27.5
Du4 / Dajiangbian / DJB3 / Shale / 3.4 / 0.092 / -26.5
Du4.8 / Dajiangbian / DJB3 / Shale / 2.6 / 2.290 / -27.3
Du5.8 / Dajiangbian / DJB3 / Shale / 1.6 / 0.685 / -26.7
Du6.5 / Dajiangbian / DJB3 / siltstone / 0.9 / 0.901 / -26.4
Du7 / Dajiangbian / DJB3 / siltstone / 0.4 / 0.960 / -27.0
Du7.4 / Dajiangbian / DJB3 / siltstone / 0 / 1.109 / -27.0
D5.9 / Dajiangbian / DJB2 / Shale / 15.9 / 0.419 / -31.8
D3.8 / Dajiangbian / DJB2 / dolomite / 13.8 / -3.9 / -8.1 / 0.030 / -24.9 / 190 / 118567 / 17114 / 58779 / 14117 / 110 / 0.50 / 155 / 128
D2.8 / Dajiangbian / DJB2 / Chert / 12.8 / -3.4 / -9.7 / 0.473 / -27.5
D2.5 / Dajiangbian / DJB2 / Chert / 12.5 / 1.036 / -32.4
D1.8 / Dajiangbian / DJB2 / Chert / 11.8 / -2.9 / -9.3 / 0.388 / -27.3
D1.5 / Dajiangbian / DJB2 / Chert / 11.5 / 0.249 / -28.1
D0.9 / Dajiangbian / DJB2 / Chert / 10.9 / -4.2 / -10.1 / 0.467 / -26.9
D0.0 / Dajiangbian / DJB2 / Chert / 10 / 0.230 / -26.6
D-9.4 / Dajiangbian / DJB2 / Dolomite / 0.6 / -4.8 / -10.5 / 0.039 / -23.8 / 245 / 56833 / 13198 / 26260 / 3857 / 128 / 0.46 / 103 / 30
D-9.6 / Dajiangbian / DJB2 / Dolomite / 0.4 / -4.7 / -10.3 / 0.027 / -21.8 / 197 / 87433 / 18548 / 42231 / 5175 / 37 / 0.48 / 506 / 141
D-9.8 / Dajiangbian / DJB2 / Dolomite / 0.2 / -4.5 / -9.7 / 0.023 / -26.4 / 192 / 111042 / 17427 / 57188 / 4583 / 43 / 0.52 / 401 / 106
D-10 / Dajiangbian / DJB2 / Dolomite / 0 / -4.8 / -9.7 / 0.023 / -24.0 / 189 / 76581 / 14886 / 37886 / 3760 / 31 / 0.49 / 484 / 122
Du37.4 / Dajiangbian / DJB1 / siltstone / 15.8 / -5.4 / -10.0 / 0.615 / -28.0
Du38 / Dajiangbian / DJB1 / Dolomite / 15.2 / -4.4 / -3.4 / 0.023 / -27.6 / 579 / 122500 / 18955 / 65455 / 1340 / 164 / 0.53 / 116 / 8
Du38.6 / Dajiangbian / DJB1 / Dolomite / 14.6 / -4.5 / -2.0 / 0.021 / -28.2 / 511 / 111800 / 18413 / 60051 / 1348 / 124 / 0.54 / 148 / 11
Du39 / Dajiangbian / DJB1 / Dolomite / 14.2 / -4.6 / -3.8 / 0.010 / -26.5 / 341 / 112453 / 17699 / 61238 / 1352 / 150 / 0.54 / 118 / 9
Du39.5 / Dajiangbian / DJB1 / Dolomite / 13.7 / -4.6 / -4.4 / 0.017 / -27.9 / 477 / 108818 / 18874 / 56942 / 1404 / 133 / 0.52 / 141 / 11
Du40 / Dajiangbian / DJB1 / Dolomite / 13.2 / -4.5 / -3.8 / 0.013 / -27.0 / 606 / 126832 / 17218 / 69099 / 1438 / 148 / 0.54 / 117 / 10
Du40.5 / Dajiangbian / DJB1 / Dolomite / 12.7 / -4.1 / -3.7 / 0.015 / -27.4 / 455 / 113646 / 15552 / 61021 / 1319 / 125 / 0.54 / 125 / 11
Du41.3 / Dajiangbian / DJB1 / Dolomite / 11.9 / -3.6 / -0.3 / 0.018 / -29.4 / 369 / 135073 / 17756 / 71576 / 1634 / 146 / 0.53 / 121 / 11
Du41.8 / Dajiangbian / DJB1 / Dolomite / 11.4 / -3.5 / -1.9 / 0.022 / -29.4 / 376 / 128439 / 20084 / 66022 / 2014 / 148 / 0.51 / 136 / 14
Du42.1 / Dajiangbian / DJB1 / Dolomite / 11.1 / -3.4 / -3.5 / 0.029 / -29.0 / 735 / 121188 / 25198 / 59614 / 2645 / 130 / 0.49 / 193 / 20
Du42.8 / Dajiangbian / DJB1 / Dolomite / 10.4 / -3.0 / -4.3 / 0.039 / -29.1 / 495 / 87389 / 22557 / 40455 / 2602 / 89 / 0.46 / 253 / 29
Du43.3 / Dajiangbian / DJB1 / Shale / 9.9 / 0.062 / -28.5
Du43.8 / Dajiangbian / DJB1 / Shale / 9.4 / 0.329 / -30.5
Du44 / Dajiangbian / DJB1 / Shale / 9.2 / 0.155 / -31.8
Du44.2 / Dajiangbian / DJB1 / Shale / 9 / 0.069 / -28.3
Du45 / Dajiangbian / DJB1 / Shale / 8.2 / 0.093 / -27.2
Du46 / Dajiangbian / DJB1 / Shale / 7.2 / 2.378 / -31.6
Du46.8 / Dajiangbian / DJB1 / Shale / 6.4 / 0.036 / -28.1
Du50.6 / Dajiangbian / DJB1 / Dolomite / 2.6 / -0.2 / -5.5 / 0.018 / -27.8 / 224 / 142946 / 11223 / 76714 / 4555 / 114 / 0.54 / 98 / 40
Du50.9 / Dajiangbian / DJB1 / Dolomite / 2.3 / -2.3 / -7.9 / 0.014 / -25.8 / 213 / 111964 / 10402 / 59946 / 3854 / 131 / 0.54 / 79 / 29
Du51.9 / Dajiangbian / DJB1 / Dolomite / 1.3 / -1.6 / -6.0 / 0.014 / -25.3 / 172 / 121529 / 9630 / 63972 / 3575 / 92 / 0.53 / 104 / 39
Du52.9 / Dajiangbian / DJB1 / Shale / 0.3 / 0.492 / -29.4
Du53.2 / Dajiangbian / DJB1 / Shale / 0 / 0.047 / -26.0

aDepths are relative to zero at the bottom of each subsection.

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