Show simple item record

The gold-bearing mineralizations in the Pyrenees and their significance in the evolution of the Hercynian orogen

dc.contributor.authorSoler Gil, Albert
dc.contributor.authorCardellach, Esteve
dc.contributor.authorArcos, D.
dc.contributor.authorDelgado, J.
dc.description.abstractG old is found in the Hercynian terranes of Central and Eastern Pyrenees as disseminations in metasediments of lower Paleozoic age; in veins contemporaneous with the main Hercynian foliation; in veins related to the Hercynian shear zones, faults and thrusts that postdate the main foliation and in skarns related to late Hercynian granites. Gold is associated to arsenopyrite, a typical feature throughout the Pyrenees. Two types of mineralizing fluid have been recognized: a C 0 2- rich lo w s a lin ity (6% w t N aCI eq.) fluid, present in the synfoliation veins and a C 0 2- free and high s a lin ity (up to 30% w t NaCI eq) fluid found in the post-foliation deposits. Ore deposition took place around 500 °C and 5kb in the synfoliation veins and around 350 °C and 2kb in the post-foliation veins and skarns. The late Hercynian uplift of themetamorphic terranes caused a steep rise in the thermal gradient (from 25 to 50°C/km), theexpansion of porous fluid, and its migration into faults and thrusts. In the case of the skarns, the fluids were mobilized because of the thermal gradient related to the contact metamorphism.en_US
dc.publisherSociedad Geológica de Españaen_US
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.subject.otherHercynian orogen,en_US
dc.subject.otherMetamorphic fluidsen_US
dc.titleLas mineralizaciones auríferas de los Pirineos y su significado en la evolución del orógeno Hercínicoen_US
dc.titleThe gold-bearing mineralizations in the Pyrenees and their significance in the evolution of the Hercynian orogeneng

Files in this item

This item appears in the following Collection(s)

Show simple item record

Atribución-NoComercial-SinDerivadas 3.0 España
Except where otherwise noted, this item's license is described as Atribución-NoComercial-SinDerivadas 3.0 España

Copyright © 2008-2010. ARIAS MONTANO. Repositorio Institucional de la Universidad de Huelva
Contact Us | Send Feedback |