Microstructural and rheological contrasts between dunite ...· Microstructural and rheological contrasts

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  • Microstructural and rheological contrasts between dunite, harzburgite and pyroxenite

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    References7

    Robert Farla1 1KBayerischesKGeoinstitutLKUniversittKBayreuthLK655bKBayreuthLKGermanyKwwKEmail7KrobertDfarlaWuniwbayreuthDdeK

    UDKIntroduction7odelsF predictingF theF strengthF ofF theF lithosphereF failF toF produceF substantialF weakeningFnecessaryF forF plateF tectonicF convectionF HdditionalF mechanismsF areF necessaryF thatF canFleadF toF weakeningDF mostF likelyF inF theF formF ofF localizingF deformationF asF seenF inF natureF?ecentFexperimentalFstudiesFEegFIarlaFetFalFP6G-FreportFtantalizingFcluesFthatFaFsecondFphaseF Eorthopyroxene-F canF helpF localizeF deformationF viaF dynamicF recrystallizationF andFphaseF mixingF ThisF studyF expandsF theF deformationF conditionsF toF furtherF investigateF theFrheologicalFroleFofFpyroxenesFinFtheFductileFlowerFlithosphereCasthenosphereFofFtheFVarthFwithFimplicationsFforFperidotite9pyroxeniteFshearFzonesFKey5objectivesqFFFFFFNynthesizeFvariousFmixturesFandFend9memberFcompositionsFofFolivineDForthopyroxeneFEopx-FandFclinopyroxeneFEcpx-FwithFstartingFgrainFsizeqFG6F9F6FmicronsFFFFFFF+eformFsamplesFinFaFrangeFofFtemperaturesFEB66F9FG66F=-DFpressuresFEPF9F