SUPERPOSING-REWORKING METALLOGENESIS OF JINNINGIAN MAFIG VOLCANIC-INTRUSION COMPLEXIN DONGCHUAN COPPERFIELD
(Department of Geology, Central South University of Technology，Changsha 410083)
Abstract: Mafic "intrusive rocks", distributed greatly within Dongchuan strata-hound copperfieldand really comprising volcanic，subvolcanic and volcano plutonic rocks，should he termed as volcanic-in-trusive complex (VIC). Geology and geochemistry of Jinningian VIC and its relation to Cu ores reaffirmthat VIC play an important role in mineralizations，which are oat only vein bonanzas deduced from coose beds。but also new orehodies occurred within VIC. Bonanzas of superposing-reworking type and orebodies of magmatic liquation-differentiation type in the depth are suggested to be found in the largelydeveloping VIC area.
Key words: volcanic-intrusive complex Jinningian period superposing-reworking Dongchuan Copperfield