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Swiss Journal of Geosciences
Fig. 17 | Swiss Journal of Geosciences

Fig. 17

From: Geology along the Bedretto tunnel: kinematic and geochronological constraints on the evolution of the Gotthard Massif (Central Alps)

Fig. 17

Kernel density estimates (KDE, Vermeesch, 2012) and approximate peaks of \({}^{206}\hbox {Pb}/{}^{238}\hbox {U}\)-ages determined for zircons of a RG1 sample (B19-1417), a RG2 sample (B20-3247), and a QB-SZ sample (B20-2801). n-values in brackets correspond to number of considered ages (data used for the mean calculation and age range definition in Figs. 12f and 15e, and data corresponding to the 252–303 Ma age range in Fig. 16f). KDE curves are normalized to a maximum value of one

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