Fluid inclusion planes and paleofluid records in the Podlesí granite, Krušné hory Mts., Czech Republic


Authors: Dobeš P

Published in: Bulletin of Geosciences, volume 80, issue 2; pages: 149 - 154; Received 6 August 2004; Accepted in revised form 22 March 2005;

Keywords: Bohemian Massif, Krušné hory Mts., alkali feldspar granite, greisen, fractures, fluid inclusions, fluid inclusion planes,

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Three generations of fluid inclusion planes (FIP) were distinguished in rocks of the PTP-3 borehole from the Podlesí granite stock (Krušné hory Mts.). The oldest generation of FIP is believed to have followed the propagation of proto-tectonic subhorizontal aplite dykes and steep veinlets of greisen mineralization, at temperatures of about 400 °C and pressures less than 100 MPa. The later FIP contain fluid inclusions with homogenization temperatures from 140 to 270 °C, and likely represent hydrothermal fluids associated with the repeated opening of fractures during the late stages of intrusive complex development.