Master ès Sciences in geology Fluids from the host rock to and within the fault zone Contactpersons:MatteoLupi([email protected]) Context Veinsrepresentfluidsmovingthroughgeologicalunitsandacrossfaultzones.Faultstructuresareoften characterisedbyawidespreadpresenceofveins,especiallyingeothermalsettings.Howfluidsdomigratefrom thehostrockstothefaultstructures?Aretheydrivenbygravityorbythegeothermalgradient?Thisstudywill investigatehowfluidsmigratefromthehostrockstothefaultzonesandwilltrytoquantifyhowveinspervadea givenfaultstructure.Thestudywillinvolvefieldworkandlabanalysis.Thissubjectmaybeadaptedtovarious outcropsandthereforecarriedoutbymorethanoneperson(ifrequired). Objectives - Determinehowfluidsmigratewithinsedimentarysequencesandultimatelyenterafaultzone - Quantifytheamountoffluidsaccommodatedinfaultstructure - Determineforagivensetofveinswhetherfluidsweredownellingorupwelling Methods - Fieldwork Literature Gudmundsson,A.,2000.Activefaultzonesandgroundwaterflow.:Geophysicalresearchletters,27,p.2993– 2996. Gudmundsson,A.,2001.Fluidoverpressureandflowinfaultzones:fieldmeasurementsandmodels.: Tectonophysics,336,p.183–197. Gudmundsson,A.,Berg,S.S.,Lyslo,K.B.andSkurtveit,E.,2001.Fracturenetworksandfluidtransportinactive faultzones:JournalofStructuralGeology,23,p.343–353. SitesWEB Choiceoforientation:Sedimentary, environmental and reservoir geology 10.03.16