Fig. 3: Zircon U-Pb Concordia diagrams, histograms of zircon concordia age distributions, and ranked 206Pb/238U age plot with weighted mean ages. | Communications Earth & Environment

Fig. 3: Zircon U-Pb Concordia diagrams, histograms of zircon concordia age distributions, and ranked 206Pb/238U age plot with weighted mean ages.

From: Carbon isotope perturbations are not primarily driven by volcanism during the Late Paleozoic Ice Age

Fig. 3

a, c, e, g Concordia 206Pb/238U vs 207Pb/235U age plots (left panels) of laser ablation ICP-MS U-Pb analyses of zircons (data-point error ellipses are 1σ) for samples HN-1 to HN-4. b, d, f, h Corresponding histograms of zircon 206Pb/238U age distributions and the calculation of the weighted mean ages (right panels) for samples HN-1 to HN-4.

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