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Table 6 U and Pb LA-ICP-MS zircon data of the Mn-rich quartzite VC10-04 from Chiusella Valley

From: The evolution of the Sesia Zone (Western Alps) from Carboniferous to Cretaceous: insights from zircon and allanite geochronology

Spot name Concordia diagram 206Pb/238U
Age (Ma)
 ± 1σ Comments
207Pb/235U  ± 1σ % 206Pb/238U  ± 1σ % ρ
Chiusella Valley–VC10-04 Mn-rich quartzite
 04mrc11 0.316 3.813 0.043 0.884 0.15 273.6 2.7 Rim1
 04mrc13 0.334 3.850 0.043 1.134 0.12 274.4 3.1 Rim1
 03mrb06 0.317 2.707 0.044 0.758 0.08 276.9 2.8 Rim1
 03mrc11 0.323 2.601 0.044 0.689 0.09 277.7 3.9 Rim1
 03mrc07 0.315 2.987 0.044 0.884 0.10 280.6 2.8 Rim1
 03mrd12 0.335 3.044 0.045 0.820 0.11 281.6 2.8 Rim1
 04mrb11 0.312 2.735 0.045 0.782 0.09 283.8 2.8 Rim1
 03mrc06 0.306 6.537 0.041 1.846 0.28 261.6 4.8 Core
 04mrc14 0.289 4.820 0.042 1.465 0.14 263.7 3.9 Core
 03mrd06 0.309 2.542 0.043 1.010 0.07 268.3 2.7 Core
 03mrd11 0.320 2.020 0.043 0.904 0.03 273.8 2.7 Core
 04mrb07 0.315 3.365 0.044 0.836 0.13 275.0 2.8 Core
 03mrb07 0.320 2.652 0.044 0.828 0.06 275.5 2.8 Core
 03mrd07 0.314 2.519 0.044 1.086 0.05 276.7 3.0 Core
 04mrc12 0.316 3.701 0.044 0.875 0.14 276.8 2.8 Core
 04mrc06 0.326 6.074 0.044 1.408 0.18 277.7 2.8 Core
 04mrb13 0.307 2.570 0.044 0.656 0.09 278.2 2.8 Core
 03mrb05 0.316 4.493 0.044 1.195 0.14 279.1 3.3 Core
 03mrc10 0.335 4.174 0.044 1.182 0.14 279.3 3.3 Core
 04mrc05 0.311 4.540 0.045 1.191 0.15 281.7 3.4 Core
 03mrc12 0.333 3.994 0.045 1.151 0.13 282.0 3.2 Core
 04mrb05 0.317 2.670 0.045 0.907 0.08 282.6 2.8 Core
 04mrb12 0.311 2.530 0.045 0.576 0.09 284.4 2.8 Core
 04mrc07 0.315 3.913 0.045 0.908 0.15 286.4 2.9 Core
 04mrb06 0.334 2.480 0.045 0.833 0.07 286.5 2.9 Core
 03mrd05 0.334 2.777 0.046 1.233 0.07 288.5 3.6 Core
 03mrc05 0.333 4.204 0.046 1.205 0.13 291.8 3.5 Core
  1. Data were processed using Lamtool. The dates that were not used for the age calculations shown in Fig. 9 are reported in italics