Thatcher et al., 2020. Hydroclimate variability from western Iberia (Portugal) during the Holocene: Insights from a composite stalagmite isotope record. USO colonne 12 (anno) e poi le altre: 3 4 5 9 (u238,th232,du234,th230/u238,th230/th232); linee da 10 a 78. Present=2013 CE Table 1. U-Th isotopic ratios and 230Th ages. U-Th isotopic ratios and 230Th ages. a. Present defined as the year 2013 CE. b. Initial 230Th/232Th atomic ratio of 13.5 (±6.75) ppm used to correct for unsupported 230Th in BG stalagmites. c. Errors at 2σ level. Decay constants used: λ230 = 9.1705e-6/yr; λ234 = 2.82206e-6/yr; λ238 = 1.55125e-10/yr. (Cheng et al., 2013) Stalagmite Distance to 238U 232Th δ234U Error 230Th/238U Error 230Th/232Th Error Uncorrected age Error Corrected age Error top(mm) (ng g-1) (pg g-1) (Corr) (activity) (ppm) (yr BP) (yr) (yr BP) (yr) BG135 3 131.8 174.4 350.8 1.4 0.063929 0.00073 798 155 5305 62 5218 78 BG135 22 102.9 73.5 371.6 1.4 0.065627 0.00100 1516 772 5366 83 5319 90 BG135 133 112.5 136.9 317.3 1.9 0.066192 0.00084 898 224 5641 74 5559 87 BG135 77 118.3 112.3 362.4 1.9 0.068467 0.00103 1190 323 5635 87 5573 94 BG135 237 137.0 111.4 380.9 2.3 0.076930 0.00091 1560 478 6266 77 6214 83 BG135 258 114.6 398.1 386.3 2.0 0.081988 0.00123 389 33 6666 103 6442 153 BG135 316 116.6 435.2 377.1 1.7 0.083440 0.00123 369 28 6834 104 6592 161 BG135 374 126.2 30.9 377.1 2.1 0.091322 0.00131 6145 7238 7505 112 7489 113 BG135 396 85.1 467.9 401.6 3.5 0.095907 0.00300 288 55 7755 251 7404 312 BG135 448 111.2 788.4 342.6 4.9 0.11944 0.00249 237 30 8639 221 8167 327 BG135 502 154.1 1929.3 324.1 1.9 0.112726 0.00107 148 4 9737 98 8889 433 BG136 2.5 80.0 116.0 287.7 1.3 0.004159 0.00135 48 23 353 114 253 129 BG136 4 90.0 42.0 292.7 1.3 0.002947 0.00122 103 111 249 103 216 109 BG136 7 100.0 74.0 315.3 1.3 0.006491 0.00124 144 93 539 104 489 111 BG136 12.7 101.7 213.7 345.4 1.4 0.007146 0.00130 56 17 581 106 441 131 BG136 17.2 89.5 45.8 349.5 1.4 0.007096 0.00127 228 217 575 103 541 109 BG136 19 113.0 140.0 345.3 1.4 0.008796 0.00121 118 48 716 99 634 111 BG136 21.5 79.0 85.0 351.4 1.4 0.009776 0.00153 149 82 792 125 720 135 BG136 25 64.0 49.0 346.5 1.4 0.011574 0.00149 252 194 942 122 891 130 BG136 25.3 73.2 69.5 343.0 1.4 0.011961 0.00153 208 130 976 125 913 135 BG136 29.5 79.0 188.0 324.5 1.6 0.014015 0.00153 98 27 1160 127 1001 155 BG136 39 82.0 46.0 312.8 1.4 0.015681 0.00159 457 503 1311 134 1272 141 BG136 50 108.0 174.0 296.1 1.4 0.016679 0.00112 171 49 1413 96 1302 115 BG136 60 78.0 123.0 275.5 1.3 0.020385 0.00135 213 72 1757 118 1647 135 BG136 67.5 87.0 220.0 283.4 1.3 0.020889 0.00123 136 28 1790 106 1615 142 BG136 73 89.0 475.0 286.6 1.3 0.026246 0.00123 81 8 2249 107 1879 215 BG136 85 96.0 196.0 306.2 1.3 0.030769 0.00119 249 56 2597 102 2458 127 BG136 95 88.0 171.0 314.2 1.5 0.032268 0.00128 277 72 2713 109 2582 131 BG136 112 152.0 68.2 325.9 1.8 0.033223 0.00186 1220 1887 2770 157 2740 165 BG136 167 97.5 61.2 346.7 1.4 0.041970 0.00115 1103 586 3457 96 3415 100 BG136 190 90.2 209.1 357.0 1.7 0.040801 0.00123 290 59 3333 102 3180 131 BG136 267 100.7 97.8 379.0 1.4 0.050200 0.00100 852 319 4048 83 3986 92 BG136 285 97.6 173.6 371.1 1.5 0.056336 0.00011 522 117 4583 88 4467 108 BG136 340 123.9 285.0 353.0 1.4 0.063520 0.00085 455 63 5254 72 5102 107 BG136 417 90.6 2281.0 388.9 1.4 0.087843 0.00152 58 2 7145 128 5513 824 BG134 0.8 91.9 164.0 393.0 3.4 0.004798 0.00167 44 21 376 132 262 148 BG134 2 104.9 1176.7 376.3 1.4 0.009286 0.00126 14 2 738 101 8 379 BG134 8 79.7 82.1 363.1 1.4 0.011385 0.00097 166 66 915 78 847 88 BG134 9 66.5 147.8 364.9 3.5 0.014648 0.00222 109 41 1177 179 1032 199 BG134 17 90.3 157.7 376.4 1.4 0.017548 0.00126 182 47 1400 101 1287 120 BG134 29 101.7 296.4 382.0 2.4 0.027248 0.00148 154 29 2173 119 1985 155 BG134 31 95.3 102.2 397.8 1.4 0.025017 0.00132 385 176 1971 105 1902 114 BG134 43 99.3 263.4 385.7 2.4 0.032511 0.00139 202 38 2592 112 2420 144 BG134 44 107.3 158.0 395.3 1.4 0.030688 0.00121 344 108 2428 97 2333 111 BG134 52 107.9 349.6 391.9 2.7 0.046482 0.00080 237 6 3709 65 3501 123 BG134 71 140.3 1596.5 395.2 4.0 0.068866 0.00174 100 3 5531 144 4800 391 BG134 90 109.8 40.5 389.5 2.0 0.058125 0.00101 2597 424 4668 83 4644 84 BG134 89 132.8 529.5 396.5 1.4 0.050533 0.00103 209 20 4026 84 3770 154 BG134 70 143.0 3.8 390.9 1.4 0.049609 0.00109 30553 226480 3967 89 3965 90 BG12-1A 3 148.0 178.3 257.2 1.3 0.031198 0.00106 428 144 2746 94 2661 107 BG12-1A 59 216.0 498.9 294.7 1.3 0.046031 0.00071 328 37 3952 62 3793 103 BG12-1A 99 182.7 4669.0 285.0 1.3 0.069649 0.00068 45 1 6088 62 4296 888 BG12-1A 114 215.9 851.1 292.7 2.7 0.077626 0.00123 325 6 6767 111 6494 176 BG12-1B 9 151.7 252.0 242.2 1.2 0.011537 0.00084 115 24 1019 75 900 99 BG12-1B 46 143.5 245.9 268.7 1.3 0.024081 0.00051 232 25 2091 45 1970 76 BG12-1B 64 145.9 463.3 267.3 1.3 0.027486 0.00068 143 12 2392 60 2168 128 BG12-1B 84 172.6 1307.7 261.4 1.7 0.033264 0.00095 72 2 2916 84 2378 281 BG12-1B 105 172.6 1307.7 261.4 1.7 0.033264 0.00095 72 2 2916 84 2693 426 BG12-1B 108 136.9 3246.1 315.2 1.8 0.066596 0.00124 46 1 5676 109 4054 811 BG12-1B 140 186.6 330.7 305.5 1.3 0.055524 0.00062 517 68 4754 54 4633 83 BG06_3 6 284.0 1421.6 302.4 1.7 0.053607 0.00088 177 11 4597 77 4452 203 BG06_3 55 251.2 1838.6 194.4 1.4 0.052357 0.00063 118 3 4901 61 4352 280 BG06_3 95 249.0 1650.4 191.8 1.6 0.059421 0.00071 148 4 5592 69 5094 258 BG06_3 125 305.2 2078.3 301.6 1.8 0.072054 0.00075 175 4 6232 67 5764 243 BG06_3 150 283.4 6502.9 285.5 1.6 0.079482 0.00037 57 0 6975 34 5368 796 BG06_3 206 226.9 359.2 296.7 3.7 0.082172 0.00090 856 27 7155 83 7046 100 BG06_3 220 218.0 408.9 313.6 2.5 0.080335 0.00084 707 68 6908 75 6780 99 BG06_3 245 253.1 1877.0 315.3 3.9 0.088445 0.00083 197 5 7622 77 7117 264 BG06_3 287 250.0 5549.4 298.2 1.9 0.100258 0.00113 75 1 8803 104 7265 769