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dc.contributor.advisorNabelek, Peter Igoren
dc.contributor.advisorBauer, Robert L. (Robert Louis)en
dc.contributor.authorHill, Joseph Christopher, 1969-en_US
dc.coverage.spatialBlack Hills (S.D. and Wyo.)
dc.coverage.temporalPrecambrianen_US
dc.date.issued2006eng
dc.date.submitted2006 Summeren
dc.descriptionThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file.en_US
dc.descriptionTitle from title screen of research.pdf file viewed on (April 26, 2007)en_US
dc.descriptionIncludes bibliographical references.en_US
dc.descriptionVita.en_US
dc.descriptionThesis (Ph.D.) University of Missouri-Columbia 2006.en_US
dc.descriptionDissertations, Academic -- University of Missouri--Columbia -- Geological sciences.en_US
dc.description.abstractThe Paleoproterozoic assembly of Laurentia occurred between ̃1.96 to 1.70 Ga, and continued with the accretion of island arc terranes until about 1.63 Ga. The Black Hills, South Dakota lie along the eastern margin of the Wyoming Archean craton and the western edge of the southern projection of the Trans-Hudson orogen (THO). Precambrian rocks of the Black Hills uplift record multiple deformational and metamorphic events related to three orogenic events between 1̃780 and 1690 Ma. Previous workers ascribed these events to several orogenies based on maxima in distribution of ages. There is a lack of agreement, however, about the relationship of the age maxima to specific deformations, and it is unclear whether or not several could have been accommodated within the relatively short time period. Rocks of the Mount Rushmore quadrangle underwent a ductile folding, intrusion of the 1̃715 Ma Harney Peak granite (HPG), and two periods of metamorphism during this time. Relationships among these processes provide information on the tectonics forces acting along this part of the Wyoming craton's margin. A major structural discontinuity defined by the NNW-trending Keystone and Empire Mine faults separates different structural domains. Domains to the east of the discontinuity are interpreted as "tectonic slivers" that moved unknown distances along the eastern margin of the Archean Wyoming craton. Structural features mapped in the study area and the overall structural trends of the east-central Black Hills may be best explained by an oblique convergence model.en_US
dc.identifier.merlin.b58461395en_US
dc.identifier.oclc123539217en_US
dc.identifier.otherHillJ-072406-D5678en_US
dc.identifier.urihttp://hdl.handle.net/10355/4456
dc.publisherUniversity of Missouri--Columbiaen_US
dc.relation.ispartof2006 Freely available dissertations (MU)en_US
dc.relation.ispartofcommunityUniversity of Missouri-Columbia. Graduate School. Theses and Dissertations. Dissertations. 2006 Dissertations
dc.subject.lcshGeology, Structuralen_US
dc.subject.lcshGeology, Stratigraphicen_US
dc.titleStructural geology and tectonics of the paleoproterozoic rocks of the Mount Rushmore Quadangle, Black Hills, Souh Dakotaen_US
dc.typeThesisen_US
thesis.degree.disciplineGeological sciencesen_US
thesis.degree.disciplineGeological scienceseng
thesis.degree.grantorUniversity of Missouri--Columbiaen_US
thesis.degree.levelDoctoralen_US
thesis.degree.namePh.D.en_US


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