U‐Pb zircon data for Clunes Tonalite

ConcentrationsErrors 2‐sigma (%)Age(Ma)
FractionWeight (μg)*U (ppm)Pb (ppm)Pb (pg) †206Pb/204Pb‡208Pb/206Pb§206Pb/238% err207Pb/235% err207Pb/206Pb¶% err206Pb/238U207Pb/235U207Pb/206PbCorr.coef
All analyses represent single crystals.* Sample weights are estimated by using a video monitor and are known to within 40%.† Total common Pb in analysis.‡ Measured ratio corrected for spike and fractionation only.§ Radiogenic Pb.¶ Corrected for fractionation, spike, blank, and initial common Pb.Mass fractionation correction of 0.15%/amu±0 .04%/amu (atomic mass unit) was applied to single‐collector Daly analyses and 0.12%/amu±0.04% for dynamic Faraday‐Daly analyses.Total procedural blank for Pb ranged from 0.65 to 3.7 pg and \u\u\u\u<\U\U\U\U1.0 PG FOR U.BLANK ISOTOPIC COMPOSITION: 206Pb204Pb=19.10±0.1, 207Pb/204Pb=15.71±0.1, 208Pb/204Pb=38.65±0.1.Corr. coef., correlation coefficient.Age calculations are based on the decay constants of Steiger & Jäger (1977). Common‐Pb corrections were calculated by using the model of Stacey & Kramers (1975) and the interpreted age of the sample.
z58.585.76.21.62021.40.1390.06983(.20)0.62331(.27)0.06474(.17)435.1491.9765.80.76
z430.033.72.43.21416.50.1410.06833(.16)0.52188(.21)0.05540(.14)426.1426.4428.20.76
z329.640.62.94.41217.50.1420.06833(.63)0.52153(.66)0.05536(.16)426.1426.2426.70.97
z251.715.21.13.41021.20.1650.06817(.22)0.52105(.30)0.05544(.19)425.1425.9429.80.76
z153.834.22.610.0815.30.1830.06810(.43)0.51938(.53)0.05532(.29)424.7424.7425.10.83
z67.065.93.81.01701.20.1690.05420(.19)0.41373(.26)0.05536(.17)340.3351.6426.90.76
z78.154.63.00.91616.70.2060.04995(.19)0.38123(.25)0.05535(.15)314.2327.9426.50.78