Insights into the distribution and mobility of metals in the sheeted dike complex formed at fast-spreading ridges (Pito Deep, EPR)

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dc.contributor.authorZoeller, Khalhela
dc.contributor.supervisorGillis, Kathryn M.
dc.date.accessioned2014-04-17T18:08:06Z
dc.date.available2014-04-17T18:08:06Z
dc.date.copyright2014en_US
dc.date.issued2014-04-17
dc.degree.departmentSchool of Earth and Ocean Sciences
dc.degree.levelMaster of Science M.Sc.en_US
dc.description.abstractHydrothermal fluid circulation is an important process in the formation and evolution of ocean crust. A tectonic window located at Pit Deep (NE corner Easter Microplate) provides an ideal location to examine a 3-dimensional view of ocean crust formed at the fast-spreading East Pacific Rise. This study focuses on the base metal (Cu, Ni, Mn, Co, Zn, and Pb) content of the bulk rock and mineral components in the sheeted dike complex. There is no observable trend of metal mobility with depth, geographic location, or dominant alteration phase. Secondary mineral analyses (using LA-ICP-MS) show that metals are redistributed throughout the sheeted dikes, entering into secondary sulphides, chlorite, and amphibole. Temperature and mineral stability is a primary control of metal mobility in these rocks. Due to highly variable metal concentrations and observed temperatures of alterations, the hydrothermal cell is suggested to be a continuously evolving system, and can cause the large variability observed in the metal distribution in the sheeted dikes.en_US
dc.description.proquestcode0996en_US
dc.description.proquestcode0411en_US
dc.description.proquestcode0372en_US
dc.description.scholarlevelGraduateen_US
dc.identifier.urihttp://hdl.handle.net/1828/5264
dc.language.isoenen_US
dc.rights.tempAvailable to the World Wide Weben_US
dc.subjectmid-ocean ridgesen_US
dc.subjectbase metal mobilityen_US
dc.subjectfluid flowen_US
dc.subjectbase metal distributionen_US
dc.subjecthydrothermal cellsen_US
dc.subjectwater-rock interactionsen_US
dc.subjectsheeted dike complexen_US
dc.subjectPito Deepen_US
dc.subjectEast Pacific Riseen_US
dc.subjectVMS depositsen_US
dc.titleInsights into the distribution and mobility of metals in the sheeted dike complex formed at fast-spreading ridges (Pito Deep, EPR)en_US
dc.typeThesisen_US

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