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Rioux, Matthew; Bowring, Samuel A; Cheadle, Michael J; John, Barbara E (2016): (Table 2) Zircons analyses from tonalite and oxide gabbro of the mid-ocean ridge from ODP Hole 176-735B [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.856807, In supplement to: Rioux, M et al. (2015): Evidence for initial excess 231Pa in mid-ocean ridge zircons. Chemical Geology, 397, 143-156, https://doi.org/10.1016/j.chemgeo.2015.01.011

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Further details:
Hiess, Joe; Condon, Daniel J; McLean, Noah; Noble, Stephen R (2012): 238U/235U Systematics in Terrestrial Uranium-Bearing Minerals. Science, 335(6076), 1610-1614, https://doi.org/10.1126/science.1215507
Jaffey, A H; Flynn, K F; Glendenin, L E; Bentley, W C; Essling, A M (1971): Precision measurement of half-lives and specific activities of 235U and 238U. Physical Review C, 4(5), 1889-1906, https://doi.org/10.1103/PhysRevC.4.1889
McLean, N M; Bowring, James F; Bowring, Samuel A (2011): An algorithm for U-Pb isotope dilution data reduction and uncertainty propagation. Geochemistry, Geophysics, Geosystems, 12(6), n/a-n/a, https://doi.org/10.1029/2010GC003478
Project(s):
Coverage:
Latitude: -32.723210 * Longitude: 57.266010
Date/Time Start: 1997-10-24T13:45:00 * Date/Time End: 1997-12-01T19:00:00
Minimum DEPTH, sediment/rock: 571 m * Maximum DEPTH, sediment/rock: 854 m
Event(s):
176-735B * Latitude: -32.723210 * Longitude: 57.266010 * Date/Time Start: 1997-10-24T13:45:00 * Date/Time End: 1997-12-01T19:00:00 * Elevation: -720.6 m * Penetration: 1508 m * Recovery: 865.99 m * Location: Indian Ocean * Campaign: Leg176 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 122 cores; 1003.2 m cored; 504.8 m drilled; 86.3 % recovery
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
Sample code/labelSample labelRioux, MatthewDSDP/ODP/IODP sample designation
DEPTH, sediment/rockDepth sedmRioux, MatthewGeocode
Sample IDSample IDRioux, Matthew
MineralsMineralsRioux, Matthew
RatioRatioRioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Ratio of radiogenic to common Pb.
LeadPbpgRioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Total radiogenic Pb, common Pb and U.
Standard deviationStd dev±Rioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Of total radiogenic Pb, common Pb and U.
Thorium/Uranium ratioTh/URioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Th/U ratio calculated from 208Pb/206Pb and the 206Pb/238U date of the sample.
Lead-206/Lead-204 ratio206Pb/204PbRioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Fractionation and spike corrected isotopic ratios, reduced using EARTHTIME ET535 tracer calibration v.3.
10 Lead-206/Lead-204 ratio, error206Pb/204Pb e±Rioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Fractionation and spike corrected isotopic ratios, reduced using EARTHTIME ET535 tracer calibration v.3.
11 Lead-206/Uranium-238 ratio206Pb/238URioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Uncorrected fractionation, spike and blank corrected radiogenic isotope ratios. Laboratory blanks were corrected using 206Pb/204Pb = 18.638 ± 0.707, 207Pb/204Pb = 15.494 ± 0.449, 208Pb/204Pb = 37.748 ± 1.227.
12 Lead-206/Uranium-238, error, relative206Pb/238U e rel%Rioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Uncorrected fractionation, spike and blank corrected radiogenic isotope ratios. Laboratory blanks were corrected using 206Pb/204Pb = 18.638 ± 0.707, 207Pb/204Pb = 15.494 ± 0.449, 208Pb/204Pb = 37.748 ± 1.227.
13 Lead-207/Uranium-235 ratio207Pb/235URioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Uncorrected fractionation, spike and blank corrected radiogenic isotope ratios. Laboratory blanks were corrected using 206Pb/204Pb = 18.638 ± 0.707, 207Pb/204Pb = 15.494 ± 0.449, 208Pb/204Pb = 37.748 ± 1.227.
14 Lead-207/Uranium-235, error, relative207Pb/235U e rel%Rioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Uncorrected fractionation, spike and blank corrected radiogenic isotope ratios. Laboratory blanks were corrected using 206Pb/204Pb = 18.638 ± 0.707, 207Pb/204Pb = 15.494 ± 0.449, 208Pb/204Pb = 37.748 ± 1.227.
15 Lead-207/Lead-206 ratio207Pb/206PbRioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Uncorrected fractionation, spike and blank corrected radiogenic isotope ratios. Laboratory blanks were corrected using 206Pb/204Pb = 18.638 ± 0.707, 207Pb/204Pb = 15.494 ± 0.449, 208Pb/204Pb = 37.748 ± 1.227.
16 Lead-207/Lead-206, error, relative207Pb/206Pb e rel%Rioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Uncorrected fractionation, spike and blank corrected radiogenic isotope ratios. Laboratory blanks were corrected using 206Pb/204Pb = 18.638 ± 0.707, 207Pb/204Pb = 15.494 ± 0.449, 208Pb/204Pb = 37.748 ± 1.227.
17 Correlation coefficient, isotope ratio errorRhoRioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Uncorrected correlation coefficient of radiogenic 207Pb*/235U and 206Pb*/238U.
18 Age, mineralAge mineralMaRioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Uncorrected dates using: 238U / 235U = 137.818 (Hiess et al., 2012; doi: 10.1126/science.1215507), and decay constants of 238U = 1.5513 * 10**-10 yr**-1 and 235U = 9.8485 * 10**-10 yr**-1 (Jaffey et al., 1971; doi:10.1103/PhysRevC.4.1889).
19 Standard deviationStd dev±Rioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Uncorrected dates using: 238U / 235U = 137.818 (Hiess et al., 2012; doi: 10.1126/science.1215507), and decay constants of 238U = 1.5513 * 10**-10 yr**-1 and 235U = 9.8485 * 10**-10 yr**-1 (Jaffey et al., 1971; doi:10.1103/PhysRevC.4.1889).
20 Age, mineralAge mineralMaRioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Uncorrected dates using: 238U / 235U = 137.818 (Hiess et al., 2012; doi: 10.1126/science.1215507), and decay constants of 238U = 1.5513 * 10**-10 yr**-1 and 235U = 9.8485 * 10**-10 yr**-1 (Jaffey et al., 1971; doi:10.1103/PhysRevC.4.1889).
21 Standard deviationStd dev±Rioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Uncorrected dates using: 238U / 235U = 137.818 (Hiess et al., 2012; doi: 10.1126/science.1215507), and decay constants of 238U = 1.5513 * 10**-10 yr**-1 and 235U = 9.8485 * 10**-10 yr**-1 (Jaffey et al., 1971; doi:10.1103/PhysRevC.4.1889).
22 Age, mineralAge mineralMaRioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Uncorrected dates using: 238U / 235U = 137.818 (Hiess et al., 2012; doi: 10.1126/science.1215507), and decay constants of 238U = 1.5513 * 10**-10 yr**-1 and 235U = 9.8485 * 10**-10 yr**-1 (Jaffey et al., 1971; doi:10.1103/PhysRevC.4.1889).
23 Standard deviationStd dev±Rioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Uncorrected dates using: 238U / 235U = 137.818 (Hiess et al., 2012; doi: 10.1126/science.1215507), and decay constants of 238U = 1.5513 * 10**-10 yr**-1 and 235U = 9.8485 * 10**-10 yr**-1 (Jaffey et al., 1971; doi:10.1103/PhysRevC.4.1889).
24 DiscordanceD%Rioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Uncorrected: 100 - (100 *(206Pb/238U date)/(207Pb/206Pb date)).
25 Lead-206/Uranium-238 ratio206Pb/238URioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Th-corrected fractionation, spike and blank corrected radiogenic isotope ratios. Laboratory blanks were corrected using 206Pb/204Pb = 18.638 ± 0.707, 207Pb/204Pb = 15.494 ± 0.449, 208Pb/204Pb = 37.748 ± 1.227.
26 Lead-206/Uranium-238, error, relative206Pb/238U e rel%Rioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Th-corrected fractionation, spike and blank corrected radiogenic isotope ratios. Laboratory blanks were corrected using 206Pb/204Pb = 18.638 ± 0.707, 207Pb/204Pb = 15.494 ± 0.449, 208Pb/204Pb = 37.748 ± 1.227.
27 Lead-207/Lead-206 ratio207Pb/206PbRioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Th-corrected fractionation, spike and blank corrected radiogenic isotope ratios. Laboratory blanks were corrected using 206Pb/204Pb = 18.638 ± 0.707, 207Pb/204Pb = 15.494 ± 0.449, 208Pb/204Pb = 37.748 ± 1.227.
28 Lead-207/Lead-206, error, relative207Pb/206Pb e rel%Rioux, MatthewThermal Ionization Mass Spectrometry (TIMS)Th-corrected fractionation, spike and blank corrected radiogenic isotope ratios. Laboratory blanks were corrected using 206Pb/204Pb = 18.638 ± 0.707, 207Pb/204Pb = 15.494 ± 0.449, 208Pb/204Pb = 37.748 ± 1.227.
29 Correlation coefficient, isotope ratio errorRhoRioux, MatthewCalculatedTh-corrected correlation coefficient of radiogenic 207Pb*/235U and 206Pb*/238U.
30 Age, mineralAge mineralMaRioux, MatthewCalculatedTh-corrected dates using: 238U / 235U = 137.818 (Hiess et al., 2012; doi: 10.1126/science.1215507), and decay constants of 238U = 1.5513 * 10**-10 yr**-1 and 235U = 9.8485 * 10**-10 yr**-1 (Jaffey et al., 1971; doi:10.1103/PhysRevC.4.1889).
31 Standard deviationStd dev±Rioux, MatthewCalculatedTh-corrected dates using: 238U / 235U = 137.818 (Hiess et al., 2012; doi: 10.1126/science.1215507), and decay constants of 238U = 1.5513 * 10**-10 yr**-1 and 235U = 9.8485 * 10**-10 yr**-1 (Jaffey et al., 1971; doi:10.1103/PhysRevC.4.1889).
32 Age, mineralAge mineralMaRioux, MatthewCalculatedTh-corrected dates using: 238U / 235U = 137.818 (Hiess et al., 2012; doi: 10.1126/science.1215507), and decay constants of 238U = 1.5513 * 10**-10 yr**-1 and 235U = 9.8485 * 10**-10 yr**-1 (Jaffey et al., 1971; doi:10.1103/PhysRevC.4.1889).
33 Standard deviationStd dev±Rioux, MatthewCalculatedTh-corrected dates using: 238U / 235U = 137.818 (Hiess et al., 2012; doi: 10.1126/science.1215507), and decay constants of 238U = 1.5513 * 10**-10 yr**-1 and 235U = 9.8485 * 10**-10 yr**-1 (Jaffey et al., 1971; doi:10.1103/PhysRevC.4.1889).
34 DiscordanceD%Rioux, MatthewCalculatedTh-corrected: 100 - (100 *(206Pb/238U date)/(207Pb/206Pb date)).
35 Protactinium-231/Uranium-235 ratio231Pa/235URioux, MatthewCalculatedCalculated initial conditionsafter McLean et al. (2011; doi:10.1029/2010GC003478).
36 Protactinium-231/Uranium-235 ratio, standard deviation231Pa/235U std dev±Rioux, MatthewCalculatedCalculated initial conditions after McLean et al. (2011; doi:10.1029/2010GC003478).
37 Protactinium-231/Uranium-235 ratio231Pa/235URioux, MatthewCalculated(231Pa)/(235U)magma = 2.52 Zircon DPa/DU, calculated initial conditions after McLean et al. (2011; doi:10.1029/2010GC003478).
38 Protactinium-231/Uranium-235 ratio, standard deviation231Pa/235U std dev±Rioux, MatthewCalculated(231Pa)/(235U)magma = 2.52 Zircon DPa/DU, calculated initial conditions after McLean et al. (2011; doi:10.1029/2010GC003478).
39 Protactinium-231/Uranium-235 ratio231Pa/235URioux, MatthewCalculated(231Pa)/(235U)magma = 1.00 Zircon DPa/DU, calculated initial conditions after McLean et al. (2011; doi:10.1029/2010GC003478).
40 Protactinium-231/Uranium-235 ratio, standard deviation231Pa/235U std dev±Rioux, MatthewCalculated(231Pa)/(235U)magma = 1.00 Zircon DPa/DU, calculated initial conditions after McLean et al. (2011; doi:10.1029/2010GC003478).
Size:
780 data points

Data

Download dataset as tab-delimited text — use the following character encoding:


Sample label
(DSDP/ODP/IODP sample designation)

Depth sed [m]

Sample ID

Minerals

Ratio
(Ratio of radiogenic to common...)

Pb [pg]
(Total radiogenic Pb, common P...)

Std dev [±]
(Of total radiogenic Pb, commo...)

Th/U
(Th/U ratio calculated from 20...)

206Pb/204Pb
(Fractionation and spike corre...)
10 
206Pb/204Pb e [±]
(Fractionation and spike corre...)
11 
206Pb/238U
(Uncorrected fractionation, sp...)
12 
206Pb/238U e rel [%]
(Uncorrected fractionation, sp...)
13 
207Pb/235U
(Uncorrected fractionation, sp...)
14 
207Pb/235U e rel [%]
(Uncorrected fractionation, sp...)
15 
207Pb/206Pb
(Uncorrected fractionation, sp...)
16 
207Pb/206Pb e rel [%]
(Uncorrected fractionation, sp...)
17 
Rho
(Uncorrected correlation coeff...)
18 
Age mineral [Ma]
(Uncorrected dates using: 238U...)
19 
Std dev [±]
(Uncorrected dates using: 238U...)
20 
Age mineral [Ma]
(Uncorrected dates using: 238U...)
21 
Std dev [±]
(Uncorrected dates using: 238U...)
22 
Age mineral [Ma]
(Uncorrected dates using: 238U...)
23 
Std dev [±]
(Uncorrected dates using: 238U...)
24 
D [%]
(Uncorrected: 100 - (100 *(206...)
25 
206Pb/238U
(Th-corrected fractionation, s...)
26 
206Pb/238U e rel [%]
(Th-corrected fractionation, s...)
27 
207Pb/206Pb
(Th-corrected fractionation, s...)
28 
207Pb/206Pb e rel [%]
(Th-corrected fractionation, s...)
29 
Rho
(Th-corrected correlation coef...)
30 
Age mineral [Ma]
(Th-corrected dates using: 238...)
31 
Std dev [±]
(Th-corrected dates using: 238...)
32 
Age mineral [Ma]
(Th-corrected dates using: 238...)
33 
Std dev [±]
(Th-corrected dates using: 238...)
34 
D [%]
(Th-corrected: 100 - (100 *(20...)
35 
231Pa/235U
(Calculated initial conditions...)
36 
231Pa/235U std dev [±]
(Calculated initial conditions...)
37 
231Pa/235U
((231Pa)/(235U)magma = 2.52 Zi...)
38 
231Pa/235U std dev [±]
((231Pa)/(235U)magma = 2.52 Zi...)
39 
231Pa/235U
((231Pa)/(235U)magma = 1.00 Zi...)
40 
231Pa/235U std dev [±]
((231Pa)/(235U)magma = 1.00 Zi...)
176-735B-99R-4,108-114571iz1Tonalite59.016.900.000290.5503513.830.1770.00183860.0880.0121640.3230.0480000.2950.42911.84200.010012.2760.03998.47.088.00.00185200.1090.0476600.3020.34111.92800.01381.17.285.38.470.893.360.1808.470.45
176-735B-99R-4,108-114571iz2Tonalite45.912.600.000270.6102691.490.1970.00183940.0750.0122180.3880.0482000.3650.37411.84630.008912.3300.048107.98.789.00.00185240.1040.0478600.3730.26511.93000.01291.28.986.99.601.103.800.2109.590.53
176-735B-99R-4,108-114571iz3Tonalite91.628.580.000310.6085358.450.1960.00183890.0730.0120940.2290.0477210.1970.52611.84370.008712.2070.02884.44.786.00.00185200.1030.0473900.2110.37011.92700.01267.65.182.46.990.652.770.1306.990.33
176-735B-99R-4,108-114571iz7Tonalite50.212.840.000260.5592986.150.1800.00183800.0700.0120280.3640.0474800.3390.41811.83770.008312.1400.04472.58.183.70.00185130.0970.0471400.3460.29911.92300.01155.38.378.45.640.972.240.1905.640.49
176-735B-99R-4,108-114571z1Tonalite83.922.380.000270.5444994.110.1750.00183890.0740.0121660.2380.0480030.2070.51411.84340.008812.2780.02998.45.088.00.00185230.0980.0476500.2170.38311.93000.01281.15.285.38.470.673.360.1308.470.34
176-735B-99R-4,108-114571z2Tonalite149.345.120.000300.5528851.790.1780.00184090.0680.0121310.1690.0478150.1270.69711.85650.008112.2440.02189.13.186.70.00185430.0940.0474700.1430.49711.94300.01171.93.583.47.460.502.960.1007.460.25
176-735B-99R-4,108-114571z3Tonalite181.147.680.000260.58910634.690.1900.00184000.0640.0121070.1560.0477450.1120.74011.85040.007512.2200.01985.62.886.20.00185310.0940.0474060.1330.49311.93500.01168.73.382.67.110.472.820.0947.110.24
176-735B-99R-4,108-114571z4Tonalite61.122.160.000360.5643620.570.1820.00184020.0630.0121320.2990.0478300.2750.44511.85210.007512.2440.03690.06.686.80.00185350.0920.0474900.2830.30211.93800.01172.96.883.67.570.823.010.1607.570.41
176-735B-99R-4,108-114571z5Tonalite54.118.250.000340.5953184.110.1920.00184010.0720.0120980.3480.0477100.3290.34811.85090.008512.2100.04283.77.885.80.00185320.1010.0473700.3370.24311.93500.01266.88.182.16.900.942.740.1906.900.47
176-735B-99R-4,108-114571iz4Tonalite14.98.230.000550.563900.110.1820.00184090.1140.0121801.1290.0480201.1010.28511.85600.014012.3000.14099.026.088.10.00185420.1310.0476801.1040.24011.94200.01682.026.085.58.603.003.420.5908.601.50
176-735B-99R-4,108-114571iz5Tonalite3.71.100.000300.510238.970.1650.00183660.3410.0121604.5080.0480004.4250.27811.82800.040012.2700.550100.0105.088.10.00185020.3410.0477004.4290.26711.91600.04182.0105.085.59.0012.003.402.3008.605.90
176-735B-99R-4,108-114571iz6Tonalite8.22.290.000280.546502.640.1760.00184070.1660.0123002.0650.0484802.0220.29711.85500.020012.4100.250122.048.090.20.00185420.1760.0481302.0240.26911.94170.021104.447.988.611.105.504.401.10011.072.74
176-735B-137R-2,71-75854iz2Oxide gabbro9.13.420.000380.650542.210.2090.00183960.1560.0121802.0040.0480401.9610.31211.84800.018012.2900.240100.046.088.10.00185230.1720.0477001.9640.27311.93000.02184.047.085.78.705.303.501.0008.702.60
176-735B-137R-2,71-75854iz7Oxide gabbro7.32.640.000360.432464.580.1390.00183590.1800.0122902.1920.0486002.1480.28411.82400.021012.4000.270126.051.090.60.00185000.1850.0482002.1500.26711.91500.022108.051.088.911.405.804.501.20011.402.90
176-735B-137R-2,71-75854iz8Oxide gabbro8.73.840.000440.645523.390.2080.00183750.1540.0119202.0360.0470801.9990.27011.83500.018012.0300.24052.048.077.30.00185030.1700.0467602.0020.23511.91700.02036.048.066.63.505.201.401.0003.502.60
176-735B-137R-2,71-75854iz12Oxide gabbro8.94.330.000490.906498.070.2920.00183890.1740.0119602.2490.0472002.1930.35111.84400.021012.0700.27057.052.079.20.00185000.2030.0469002.1980.29211.91500.02443.053.072.04.305.801.701.2004.302.90
176-735B-137R-2,71-75854iz11Oxide gabbro4.93.970.000820.772290.790.2490.00184170.2760.0121903.5840.0480003.5230.25711.86200.033012.3000.440100.083.088.10.00185370.2880.0477003.5270.23711.93900.03484.084.085.88.809.403.501.9008.804.70
176-735B-137R-2,71-75854iz16Oxide gabbro5.11.890.000370.546317.800.1760.00184240.3440.0123504.3720.0487004.1930.54711.86600.041012.4700.540130.099.090.90.00185580.3440.0483004.1990.53211.95200.041113.099.089.412.0012.004.802.30012.105.80
176-735B-137R-2,71-75854iz22Oxide gabbro7.04.160.000590.604428.630.1950.00183970.1980.0120202.4930.0474002.4410.29711.84900.023012.1300.30069.058.082.80.00185280.2080.0471002.4440.27311.93300.02552.058.077.05.306.502.101.3005.303.20
176-735B-137R-2,71-75854iz23Oxide gabbro4.31.310.000310.653265.590.2100.00184090.3310.0124004.2770.0489004.1660.36811.85600.039012.5100.530141.098.091.60.00185360.3350.0485004.1700.35211.93800.040125.098.090.413.0011.005.302.30013.305.70