Giant versus small porphyry copper deposits of Cenozoic age in northern Chile: adakitic versus normal calc-alkaline magmatism

@article{Oyarzun2001GiantVS,
  title={Giant versus small porphyry copper deposits of Cenozoic age in northern Chile: adakitic versus normal calc-alkaline magmatism},
  author={Roberto Oyarzun and A M{\'a}rquez and Javier Lillo and Iv{\'a}n L{\'o}pez and Sergio Rivera},
  journal={Mineralium Deposita},
  year={2001},
  volume={36},
  pages={794-798}
}
Abstract.Cenozoic magmatic activity in northern Chile led to the formation of two contrasting porphyry copper belts: (1) a Paleocene–Early Eocene belt comprising small porphyry copper deposits (e.g., Lomas Bayas) of normal calc-alkaline affinity; and (2) a Late Eocene–Early Oligocene belt hosting huge porphyry copper deposits (e.g., Chuquicamata) of adakitic affinity. Although the first belt comprises both volcanic and plutonic rocks (andesitic–basaltic and rhyolitic lavas and tuffs, and… Expand
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