Thi s paper pre sent s the results of geologicalma pping undertaken in the C hapada-C um pinon c regio n. nort hwe ste rn pan of the 'loc nnrins Pro vince. w hic h co mprises rock s o f the A rc haea n Hid rolina Co m plex. the Paleoproremzic C a m pino rte volcan o-sedi men tary Se q uence. Mesopnucruzoic met asedimen ts fro m the Serra da Mesa Group a nd Neoproterozoic suprac rus ta l rock s from the Ma ra Rosa Volcano-sedimentary Se q ue nce. Th ese lithol ogies were affected by pre-Brasiliun o dctomuuion. as a cons eq uen ce of north-so uth com pression. fo llowed by thc Hrnsilinuo orogen e sis. Geo c hemical and geochronolog ical S l11/N d data iudic utc that the C rnupinortc Vo lcano-sedim entary SC(]lICI1t:C was gen erated in an islan d-arc e nvironmen t du ring the Palcoprotcrozoic. Thi s geo log ic envinnun e nt. a nd its d ose assoc iatio n with the Golas Mag mati c A rt: (M ara Rosa Volcan oscdimeuuu'y Sequence) suggest a tec to no-met amorphic geo log ic evolutio n invol ving amalgama tio n du e to the A ma zo nia n and Sao Fran cisco cnuons converge nce. Gold min eraliza tions in the C am piuonc Volcano-sedimen tary Sequence arc hosted by quart z ve ins controlle d by NS strike-slip faults and cl ose ly associated to magn etit e-rich g ranite s a nd d iorites.
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