Porphyry copper systems are mainly developed at convergent plate margins, including continental margin and islandarc settings sillitoe, 2010, where the subduction of oceanic crust is related to. The plutons may erupt volcanic rocks, but generally prior to initiation of the systems. Generalized alteration zoning pattern sillitoe, 2010 generalized alteration sequence sillitoe. Cenozoic tectonics and porphyry copper systems of the chilean andes. Sillitoe 27 west hill park, highgate village, london n6 6nd, england abstract porphyry cu systems host some of the most widely distributed mineralization types at convergent plate. The tops and bottoms of porphyry copper deposits sillitoe, richard h on. Triggers for the formation of porphyry ore deposits in. Figure 6 from porphyry copper systems semantic scholar. Metallogenic features of miocene porphyry cu and porphyry. Table of contents pdf society of economic geologists.
View test prep 2010porphyry sillitoe from geology 1 at university of texas. Porphyry copper deposits, that is, copper ore associated with hydrothermal fluids rising from a magma chamber, supply 75% of the worlds copper. Examples from chile, argentina, and elsewhere are used to aid in the substantiation of the model. Notwithstanding the assertion that cartoons of this sort including fig. Why no porphyry copper deposits in japan and south korea. Early, quartz and sulfidefree veinlets containing one or more of actinolite, magnetite. Suprasubduction zone setting for the formation of porphyry ore deposits. Scribd is the worlds largest social reading and publishing site. Four mineralization zones were observed in the deposit as leached, transitional, supergene and hypogene zones.
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