Utida, Giselle; Cruz, Francisco William; Santos, Roberto Ventura; Sawakuchi, André Oliveira; Wang, Hong; Pessenda, Luiz C R; Novello, Valdir Felipe; Vuille, Mathias; Strauss, André M; Borella, Ana Claudia; Stríkis, Nicolás Misailidis; Guedes, Carlos C; De Andrade, Fábio Ramos Dias; Zhang, Haiwei; Cheng, Hai; Edwards, R Lawrence (2021): U/Th results of TRA 7 speleothem [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.928029, In: Utida, G et al. (2021): δ¹³C and ⁸⁷Sr/⁸⁶Sr stalagmite records from Northeastern Brazil [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.928049
Always quote citation above when using data! You can download the citation in several formats below.
Published: 2021-02-16 • DOI registered: 2021-03-19
Related to:
Utida, Giselle; Cruz, Francisco William; Santos, Roberto Ventura; Sawakuchi, André Oliveira; Wang, Hong; Pessenda, Luiz C R; Novello, Valdir Felipe; Vuille, Mathias; Strauss, André M; Borella, Ana Claudia; Stríkis, Nicolás Misailidis; Guedes, Carlos C; De Andrade, Fábio Ramos Dias; Zhang, Haiwei; Cheng, Hai; Edwards, R Lawrence (2020): Climate changes in Northeastern Brazil from deglacial to Meghalayan periods and related environmental impacts. Quaternary Science Reviews, 250, 106655, https://doi.org/10.1016/j.quascirev.2020.106655
Coverage:
Latitude: -5.596756 * Longitude: -37.697500
Event(s):
Comment:
U decay constants: λ238 = 1.55125x10-10 (Jaffey et al., 1971) and λ234 = 2.82206x10-6 (Cheng et al., 2013).
Th decay constant: λ230 = 9.1705x10-6 (Cheng et al., 2013). *d234U = ([234U/238U]activity – 1)x1000. ** d234Uinitial was calculated based on 230Th age (T), i.e., d234Uinitial = d234Umeasured x eλ234xT. Corrected 230Th ages assume the initial 230Th/232Th atomic ratio of 4.4 ±2.2 x10-6.
Those are the values for a material at secular equilibrium, with the bulk earth 232Th/238U value of 3.8.
The errors are arbitrarily assumed to be 50%. ***B.P. stands for “Before Present” where the “Present” is defined as the year 1950 A.D.
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
540 data points
Data
| 1 Sample label | 2 Dist [mm] | 3 238U [ng/g] | 4 238U std dev [±] | 5 232Th [pg/g] | 6 232Th std dev [±] | 7 230Th/232Th atom (x10-6) | 8 230Th/232Th atom std dev [±] | 9 δ234U [‰] (*) | 10 δ234U std dev [±] | 11 (230Th/238U) | 12 (230Th/238U) std dev [±] | 13 Age dated [ka] (uncorrected) | 14 Age dated std dev [±] (uncorrected) | 15 Age dated [ka] (corrected) | 16 Age dated std dev [±] (corrected) | 17 δ234U [‰] (**) | 18 δ234U std dev [±] | 19 Age dated [ka] (corrected) | 20 Age dated std dev [±] (corrected) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TRA 7-3 | 3 | 2762.0 | 12.0 | 1355.0 | 28.0 | 27.0 | 1.00 | -98.0 | 6.7 | 0.0008 | 0.0000 | 0.098 | 0.002 | 0.082 | 0.011 | -98.0 | 7.0 | 0.020 | 0.011 |
| TRA7-16 | 16 | 1312.0 | 2.3 | 734.0 | 15.0 | 26.0 | 1.23 | -140.4 | 1.9 | 0.0009 | 0.0000 | 0.114 | 0.005 | 0.095 | 0.014 | -140.0 | 2.0 | 0.032 | 0.014 |
| TRA7-20 | 20 | 1409.5 | 3.3 | 838.2 | 16.9 | 37.0 | 2.60 | -146.1 | 1.5 | 0.0013 | 0.0001 | 0.171 | 0.011 | 0.150 | 0.018 | -146.1 | 1.5 | 0.088 | 0.018 |
| TRA7-52 | 52 | 1848.0 | 4.0 | 301.0 | 6.0 | 207.0 | 5.10 | -141.7 | 2.0 | 0.0020 | 0.0000 | 0.260 | 0.004 | 0.255 | 0.005 | -142.0 | 2.0 | 0.192 | 0.005 |
| TRA7-60 | 60 | 2336.6 | 10.1 | 5242.0 | 106.2 | 20.8 | 1.00 | -148.9 | 3.0 | 0.0028 | 0.0001 | 0.363 | 0.009 | 0.287 | 0.055 | -149.0 | 3.0 | 0.224 | 0.055 |
| TRA7-85 | 85 | 1360.0 | 2.7 | 248.0 | 5.0 | 314.0 | 7.30 | -146.3 | 2.1 | 0.0035 | 0.0000 | 0.444 | 0.005 | 0.438 | 0.007 | -146.0 | 2.0 | 0.375 | 0.007 |
| TRA7-110 | 110 | 930.0 | 1.5 | 364.0 | 7.0 | 210.0 | 5.00 | -142.7 | 2.0 | 0.0050 | 0.0001 | 0.638 | 0.009 | 0.624 | 0.013 | -143.0 | 2.0 | 0.561 | 0.013 |
| TRA7-122* | 122 | 1531.3 | 3.8 | 2484.2 | 50.1 | 96.2 | 2.20 | -132.8 | 2.0 | 0.0095 | 0.0001 | 1.198 | 0.013 | 1.143 | 0.041 | -133.2 | 2.0 | 1.078 | 0.041 |
| TRA7-129 | 129 | 1358.5 | 1.2 | 158.7 | 4.2 | 1002.2 | 32.70 | -149.6 | 1.0 | 0.0071 | 0.0001 | 0.914 | 0.018 | 0.910 | 0.018 | -150.0 | 1.0 | 0.843 | 0.018 |
| TRA7-134 | 134 | 1450.9 | 1.5 | 181.0 | 3.8 | 982.7 | 23.10 | -144.0 | 1.0 | 0.0074 | 0.0001 | 0.952 | 0.010 | 0.947 | 0.010 | -144.4 | 1.0 | 0.880 | 0.010 |
| TRA7-137 | 137 | 1035.0 | 1.7 | 217.0 | 4.0 | 646.0 | 15.00 | -155.4 | 2.0 | 0.0082 | 0.0001 | 1.068 | 0.010 | 1.061 | 0.012 | -156.0 | 2.0 | 0.998 | 0.012 |
| TRA7-140 | 140 | 1460.3 | 1.4 | 113.7 | 3.2 | 1747.1 | 55.10 | -160.8 | 1.0 | 0.0083 | 0.0001 | 1.078 | 0.015 | 1.075 | 0.015 | -161.3 | 1.0 | 1.008 | 0.015 |
| TRA7-145 | 145 | 1349.7 | 1.3 | 179.7 | 4.6 | 1182.1 | 35.20 | -152.7 | 1.1 | 0.0095 | 0.0001 | 1.236 | 0.019 | 1.231 | 0.019 | -153.2 | 1.1 | 1.164 | 0.019 |
| TRA7-150* | 150 | 1144.0 | 2.1 | 7730.0 | 155.0 | 25.0 | 1.00 | -138.2 | 2.1 | 0.0104 | 0.0001 | 1.327 | 0.010 | 1.098 | 0.162 | -139.0 | 2.0 | 1.035 | 0.162 |
| TRA7-152 | 152 | 1734.6 | 1.7 | 87.6 | 3.2 | 3430.2 | 131.10 | -127.2 | 1.0 | 0.0105 | 0.0001 | 1.321 | 0.014 | 1.320 | 0.014 | -127.7 | 1.0 | 1.253 | 0.014 |
| TRA7-154* | 154 | 1215.5 | 2.6 | 813.8 | 16.5 | 294.7 | 6.50 | -150.4 | 1.9 | 0.0120 | 0.0001 | 1.547 | 0.014 | 1.524 | 0.022 | -151.0 | 1.9 | 1.459 | 0.022 |
| TRA7-158 | 158 | 1095.5 | 0.8 | 675.8 | 13.6 | 308.3 | 6.90 | -157.7 | 1.1 | 0.0100 | 0.0001 | 1.504 | 0.015 | 1.483 | 0.022 | -158.3 | 1.1 | 1.416 | 0.021 |
| TRA7-163* | 163 | 1087.2 | 1.1 | 547.4 | 11.1 | 500.7 | 10.80 | -163.6 | 1.1 | 0.0153 | 0.0001 | 2.013 | 0.015 | 1.995 | 0.020 | -164.5 | 1.1 | 1.930 | 0.020 |
| TRA7-168 | 168 | 1561.0 | 1.3 | 332.3 | 7.1 | 1016.9 | 23.40 | -168.3 | 1.1 | 0.0100 | 0.0001 | 1.736 | 0.015 | 1.730 | 0.016 | -169.1 | 1.1 | 1.662 | 0.016 |
| TRA7-170 | 170 | 1126.0 | 1.7 | 256.0 | 5.0 | 970.0 | 22.00 | -169.0 | 1.9 | 0.0134 | 0.0001 | 1.772 | 0.016 | 1.764 | 0.017 | -170.0 | 2.3 | 1.701 | 0.017 |
| TRA7-173 | 173 | 2242.0 | 2.3 | 288.1 | 5.9 | 1809.1 | 38.30 | -178.2 | 1.2 | 0.0140 | 0.0000 | 1.888 | 0.009 | 1.883 | 0.009 | -179.1 | 1.2 | 1.816 | 0.009 |
| TRA7-180 | 180 | 18087.9 | 84.8 | 653.3 | 13.4 | 6993.2 | 148.10 | -173.7 | 2.3 | 0.0153 | 0.0001 | 2.042 | 0.015 | 2.041 | 0.015 | -174.7 | 2.3 | 1.979 | 0.015 |
| TRA7-195 | 195 | 17460.6 | 118.1 | 235.5 | 5.0 | 20784.0 | 456.50 | -175.3 | 2.3 | 0.0170 | 0.0001 | 2.273 | 0.021 | 2.272 | 0.021 | -176.4 | 1.9 | 2.210 | 0.021 |
| TRA7-210 | 210 | 17527.0 | 76.3 | 306.5 | 6.6 | 16218.6 | 357.00 | -174.4 | 1.8 | 0.0172 | 0.0001 | 2.298 | 0.015 | 2.297 | 0.015 | -175.5 | 1.0 | 2.235 | 0.014 |
| TRA7-222 | 222 | 936.0 | 1.5 | 370.0 | 7.0 | 728.0 | 15.00 | -168.9 | 1.4 | 0.0174 | 0.0001 | 2.314 | 0.009 | 2.301 | 0.013 | -170.0 | 1.7 | 2.238 | 0.013 |
| TRA7-227 | 227 | 14473.4 | 38.4 | 2372.3 | 47.9 | 3083.6 | 62.40 | -189.9 | 1.4 | 0.0307 | 0.0000 | 4.212 | 0.015 | 4.206 | 0.016 | -192.1 | 1.4 | 4.137 | 0.016 |
| TRA7-260 | 265 | 10785.3 | 36.1 | 2275.2 | 46.0 | 2845.5 | 58.50 | -172.9 | 1.7 | 0.0364 | 0.0002 | 4.916 | 0.027 | 4.908 | 0.027 | -175.3 | 1.7 | 4.846 | 0.027 |