Abstract
Alpine porphyry copper ores located in West Romania belong to the major Alpine belt developed from the Carpathians up to the Eastern Asia. They occurred along subduction zones in regions of thin continental crust characteristic of the complicated geotectonic Thetian environment during Laramian and Neogene metallogenic events. The porphyry copper ores consist of small size subvolcanic bodies with concentric alteration zones and Cu-Mo (Au) mineralization which exhibit similitudes with the Lowell and Guilbert model during Laramian times and with the diorite model during Miocene times. The magmatism related to porphyry copper mineralization is commonly Cu rich and restricted to insignificant sialic contamination. The spatial distribution of the ores is controlled by N-S Laramian tectonomagmatic alignments (Banat) and NW trending Neogene basins along extransverse faults (Metaliferi Mountains).
Résumé
Les minéralisations de cuivre porphyriques de la Roumanie occidentale appartiennent à la ceinture majeure qui s'étend depuis les Carpates jusqu' à l'Asie orientale. Leur occurrence le long des zones de subduction dans les régions à croûte continentale mince est caractéristique pour le compliqué milieu géotectonique thetien, au cours de la métallogenèse laramienne et néogène. Le cuivre porphyrique du type Cu-Mo (Au) est représenté par des corps subvolcaniques de dimensions réduites, à zonalité d'altération concentrique; la minéralisation laramienne peut être assignée au modèle de Lowell et Guilbert et la minéralisation néogène au modèle dioritique. Le magmatisme générateur est, en général, riche en cuivre et limité à une contamination sialique modique. La distribution spatiale des minéralisations est contrôlée par des alignements tectonomagmatiques laramiens orientés N-S (Banat), ainsi que par la disposition NO-SE des basins néogènes formès aux dépens des anciennes fractures transversales (Monts Metaliferi).
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Ianovici, V., Vlad, Ş., Borcoş, M. et al. Alpine porphyry copper mineralization of West Romania. Mineral. Deposita 12, 307–317 (1977). https://doi.org/10.1007/BF00206169
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DOI: https://doi.org/10.1007/BF00206169