Fig. 2: Summary maps showing locations and ages of PCDs in the Western USA and Arizona.
From: Porphyry copper formation driven by water-fluxed crustal melting during flat-slab subduction
a, Tectonic setting of PCDs in the western United States. INB, Idaho Batholith; SNB, Sierra Nevada Batholith; SCB, Southern California Batholith; PRB, Peninsular Range Batholith. Data from refs. 3,17,23,26,47,51,52. b, Locations of biotite ± hornblende-bearing and muscovite ± garnet-bearing granites, metamorphic rocks, Proterozoic basement granitoids, key structural features (thrust faults, high- and low-angle normal faults and monoclines) and line of projection X–X’ (Fig. 6a). PCDs are represented by circles scaled according to their relative economic value (see Supplementary Table 1 for a compilation of all data). Data from ref. 23. Bt, biotite; Hb, hornblende; Ms, muscovite, Grt, garnet; Cpx, clinopyroxene.
