U–Pb dates and photographs of zircons from the “Cretaceous” Uchinami pluton in Fukui Prefecture, Japan.

<p>Fig. A1. a) Index map of the study area. b) Distribution map of the Hida plutonic and metamorphic rocks in Fukui Prefecture. Black circles indicate sampling locations of the Hida Granites with numerical dates reported in previous studies (Shibata et al., 1984; Morimoto, 1984; Nakajima et al., 1988; Shibata and Uchiumi, 1992; Tomioka et al., 2000; Koizumi et al., 2019; Koizumi and Otoh, 2020). Abbreviation Pref.: Prefecture.</p> <p><br></p> <p>Fig. A2. a, b) Photomicrographs of the Uchinami pluton (sample UD-01 and UD-2; cross-polarized light). Abbreviations Qtz: quartz, Pl: plagioclase, Bt: biotite, Chl: chlorite, Zrn: zircon, Ap: apatite, Opq: opaque minerals c–f) Photomicrographs of zircons found in the Uchinami pluton.</p> <p><br></p> <p>Fig. A3. Cathodoluminescence images of zircons from the Uchinami pluton showing analytical spots corresponding to the adopted U–Pb dates. Each spot (labeled with a number) has a diameter of 25 μm.</p> <p><br></p> <p>Table A1. Analytical settings and conditions for U–Pb zircon dating.</p> <p><br></p> <p>Table A2. The U–Pb zircon isotopic data. Abbreviations A: adopted data, N: non-adopted data.</p>