Zeck, H; Williams, Ian
Almandine-graphite-bearing biotite-cordierite dacite from Cerro del Hoyazo, southern Spain, represents erupted magma produced by Late Alpine anatexis of high-grade pelitic/quartzo-feldspathic paragneisses. U-Th-Pb ion microprobe analysis of inherited/detrital zircon cores from the dacite reveals five principal age groups, 2·8-2·5 Ga, 2·1-1·9 Ga, 1·1-0·9 Ga, 650-550 Ma and 350-320 Ma, indicating a Gondwana domain provenance. Some of the cores are surrounded by a thin euhedral overgrowth which...[Show more]
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