Inclusions fluides et isotopes du soufre du gisement Cu–Au de Valea Morii (monts Apuseni, Roumanie) : un télescopage porphyre–épithermal neutre ?

Abstract

The Valea Morii Cu–Au ore deposit (Apuseni mountains, Romania) is characterised by a spatial association of a porphyry copper (Cu±Au) with a low-sulfidation epithermal deposit (Au). Microthermometric and sulphur isotopic data, obtained on both porphyry and epithermal veins, express a telescoping between these two types of mineralization, which can be explained either by an erosion phenomenon during the hydrothermal activity or by a collapse of the upper part of the hydrothermal system.