The Influence of Geochemical Techniques on the Development of Genetic Models for Porphyry Copper Deposits
Jeffrey W. Hedenquist, Jeremy P. Richards, 1998. "The Influence of Geochemical Techniques on the Development of Genetic Models for Porphyry Copper Deposits", Techniques in Hydrothermal Ore Deposits Geology, Jeremy P. Richards, Peter B. Larson
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In the previous chapters, we have seen how a variety of theories and geochemical techniques can be applied in practice to real geological situations. In isolation, these techniques may provide important constraints on variables such as temperature, fluid composition, or age of ore deposition. But their real strength is realized when data from a number of different lines of investigation are combined and their interpretations are integrated, each providing independent constraints on a model. This integrated approach represents a huge advance on the isolated knowledge obtained from individual techniques, and provides information of fundamental and practical value.
We aim in this chapter to illustrate the value of such a multidisciplinary approach by using as an example the development of ideas concerning the genesis of porphyry Cu deposits, which have provided over 50 percent of the world's Cu production this century. The fundamental constraints on the genesis of porphyry deposits are based on geological observations. Nevertheless, geochemical studies have helped to refine our understanding of the hydrothermal processes that lead to the formation of these deposits.