Structural geology and tectonics of the paleoproterozoic rocks of the Mount Rushmore Quadangle, Black Hills, Souh Dakota

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Structural geology and tectonics of the paleoproterozoic rocks of the Mount Rushmore Quadangle, Black Hills, Souh Dakota

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dc.contributor.advisor Nabelek, Peter Igor en
dc.contributor.advisor Bauer, Robert L. (Robert Louis) en
dc.contributor.author Hill, Joseph Christopher, 1969- en_US
dc.coverage.spatial Black Hills (S.D. and Wyo.)
dc.coverage.temporal Precambrian en_US
dc.date.accessioned 2010-01-12T17:07:42Z
dc.date.available 2010-01-12T17:07:42Z
dc.date.issued 2006 en_US
dc.date.submitted 2006 Summer en
dc.identifier.other HillJ-072406-D5678 en_US
dc.identifier.uri http://hdl.handle.net/10355/4456
dc.description The 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.description Title from title screen of research.pdf file viewed on (April 26, 2007) en_US
dc.description Includes bibliographical references. en_US
dc.description Vita. en_US
dc.description Thesis (Ph.D.) University of Missouri-Columbia 2006. en_US
dc.description Dissertations, Academic -- University of Missouri--Columbia -- Geological sciences. en_US
dc.description.abstract The 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.language.iso en_US en_US
dc.publisher University of Missouri--Columbia en_US
dc.relation.ispartof 2006 Freely available dissertations (MU) en_US
dc.subject.lcsh Geology, Structural en_US
dc.subject.lcsh Geology, Stratigraphic en_US
dc.title Structural geology and tectonics of the paleoproterozoic rocks of the Mount Rushmore Quadangle, Black Hills, Souh Dakota en_US
dc.type Thesis en_US
thesis.degree.discipline Geological sciences en_US
thesis.degree.grantor University of Missouri--Columbia en_US
thesis.degree.name Ph.D. en_US
thesis.degree.level Doctoral en_US
dc.identifier.merlin .b58461395 en_US
dc.identifier.oclc 123539217 en_US
dc.relation.ispartofcommunity University of Missouri-Columbia. Graduate School. Theses and Dissertations. Dissertations. 2006 Dissertations


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