Figure 4

Geochronological framework for the Yerington porphyry system: Zircon single grain U–Pb CA–ID–TIMS and molybdenite Re-Os geochronological framework for samples spanning the Yerington magmatic system. Pre- and syn-mineralisation intrusive samples grouped and plotted in order of approximate palaeo-depth, after²⁷. Sample details in Supplementary Data 2. We take the weighted mean of the youngest population of zircon dates that formed a statistically acceptable Mean Square Weighted Deviation (MSWD, or chi squared) as the best approximation for the crystallisation of the host magma. Cpy = chalcopyrite, Bn = bornite, Mo = molybdenite, Qtz = quartz, UST = unidirectional solidification texture, Porph. = porphyry, Min. = mineralised, M.S. = mass spectrometry. Error bars at 2σ. For comparison of Re-Os with U–Pb data, expanded uncertainties for Re-Os (typically ± 0.8 Myrs) and decay constant and tracer uncertainty for U–Pb data (typically ± 0.08 Myrs, represented in legend) should be taken into account (Refer to Supplementary Data 2).