Characteristics of Serpentinized Peridotites from Collisional Settings: A Case Study from Domenigoni Valley, California

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dc.contributor.advisorLee, Cin-Ty A
dc.creatorMalouta, Alexandra Julia
dc.date.accessioned2017-08-01T15:56:55Z
dc.date.available2017-08-01T15:56:55Z
dc.date.created2016-12
dc.date.issued2016-12-02
dc.date.submittedDecember 2016
dc.date.updated2017-08-01T15:56:55Z
dc.description.abstractPeridotites are infrequently seen at the earth’s surface, making the glimpses of mantle processes they reveal invaluable. An unusual metaperidotite outcrop in Domenigoni Valley, CA offers insight into subduction zone processes associated with the accretion of western North America. These serpentinized dunitic peridotites, exposed at the northernmost tip of the Peninsular Ranges Batholith arc, display a melt-depleted pyroxene-poor mineralogical composition. High forsterite contents of olivines and high chromium number in chrome spinels indicate that these highly melt-depleted samples are of forearc origin (Arai, 1994), further substantiated by low concentrations of incompatible elements. Serpentinization fluids appear to have refertilized light rare earth elements (LREEs) in these samples without affecting the concentrations of major and minor elements. Calculations of melt depletion based on heavy rare earth element (HREE) concentrations of olivines and whole rock glasses indicate melt depletion of up to 25%. Fostering a better understanding of mantle behavior associated with arc accretionary processes may help to illuminate the subtleties of continental crust formation.
dc.format.mimetypeapplication/pdf
dc.identifier.citationMalouta, Alexandra Julia. "Characteristics of Serpentinized Peridotites from Collisional Settings: A Case Study from Domenigoni Valley, California." (2016) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/95987">https://hdl.handle.net/1911/95987</a>.
dc.identifier.urihttps://hdl.handle.net/1911/95987
dc.language.isoeng
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.
dc.subjectperidotite
dc.subjectmelt depletion
dc.subjectrare earth elements
dc.subjectPeninsular Ranges Batholith
dc.titleCharacteristics of Serpentinized Peridotites from Collisional Settings: A Case Study from Domenigoni Valley, California
dc.typeThesis
dc.type.genreDataset
dc.type.materialText
thesis.degree.departmentEarth Science
thesis.degree.disciplineNatural Sciences
thesis.degree.grantorRice University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science
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