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dc.contributor.authorBenson, Gregory Scott
dc.date.accessioned2012-08-27T23:23:19Z
dc.date.available2012-08-27T23:23:19Z
dc.date.issued1981
dc.identifier.urihttp://hdl.handle.net/10150/240115
dc.description.abstractItalian Trap Allochthon is a rare upper-plate exposure of Paleozoic metasedimentary and Precambrian to Tertiary crystalline tectonites in the Santa Catalina-Rincon metamorphic core complex. Elsewhere in the complex, metasedimentary tectonite is usually restricted to an autochthononous position. The internal structures of the allochthon consist of numerous low-angle faults, tear faults, and overturned asymmetric and upright folds. Close association of the low-angle faults and asymmetric folds, and vergence of the folds, indicates that these folds were formed during westward transport along the low-angle faults. The structures of the allochthon are truncated and rotated to the northeast by a listric (?) normal fault. The probable shape of the fault surface, together with the northeastward rotation of the internal structures, suggests translation of the allochthon from the northeast to the southwest. The fact that metasedimentary tectonites are found in upper- plate position indicates that the listric (?) normal faulting post-dates the metamorphism of the Paleozoic and Mesozoic strata. Metamorphism in turn was part of the development of the Santa Catalina-Rincon metamorphic core complex. It is inferred that the Italian Trap Allochthon was emplaced in the final stages of profound regional extension which prevailed during the mid-Tertiary in southern Arizona.
dc.language.isoen_USen_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the Antevs Library, Department of Geosciences, and the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author or the department.en_US
dc.subjectArizonaen_US
dc.subjectCenozoicen_US
dc.subjectdisplacementsen_US
dc.subjectfaultsen_US
dc.subjectItalian Trap Allochthonen_US
dc.subjectMesozoicen_US
dc.subjectmetamorphismen_US
dc.subjectPaleozoicen_US
dc.subjectPima County Arizonaen_US
dc.subjectPrecambrianen_US
dc.subjectRedington Passen_US
dc.subjectSanta Catalina-Rincon Metamorphic Core Complexen_US
dc.subjectstructural geologyen_US
dc.subjecttectonicsen_US
dc.subjecttectoniteen_US
dc.subjectTertiaryen_US
dc.subjectthrust faultsen_US
dc.subjectUnited Statesen_US
dc.subjectRock deformation -- Arizona -- Redington Passen_US
dc.subjectGeology, Structural -- Arizona -- Redington Passen_US
dc.subjectFaults (Geology) -- Arizona -- Redington Passen_US
dc.titleStructural Investigations of the Italian Trap Allochthon, Redington Pass, Pima County, Arizonaen_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.contributor.chairDavis, George H.en_US
dc.identifier.oclc8009039
thesis.degree.grantorUniversity of Arizonaen_US
thesis.degree.levelmastersen_US
dc.contributor.committeememberConey, Peteren_US
dc.contributor.committeememberSchreiber, Joseph F. Jr.en_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineGeosciencesen_US
thesis.degree.nameM.S.en_US
dc.description.noteAntevs Libraryen_US
dc.description.collectioninformationThis item is part of the Geosciences Theses collection. It was digitized from a physical copy provided by the Antevs Library, Department of Geosciences, University of Arizona. For more information about items in this collection, please email the Antevs Library, antevs@geo.arizona.edu.en_US
dc.contributor.creatorBenson, Gregory Scotten_US
dc.identifier.georef1982-047098
refterms.dateFOA2018-06-24T16:46:48Z
html.description.abstractItalian Trap Allochthon is a rare upper-plate exposure of Paleozoic metasedimentary and Precambrian to Tertiary crystalline tectonites in the Santa Catalina-Rincon metamorphic core complex. Elsewhere in the complex, metasedimentary tectonite is usually restricted to an autochthononous position. The internal structures of the allochthon consist of numerous low-angle faults, tear faults, and overturned asymmetric and upright folds. Close association of the low-angle faults and asymmetric folds, and vergence of the folds, indicates that these folds were formed during westward transport along the low-angle faults. The structures of the allochthon are truncated and rotated to the northeast by a listric (?) normal fault. The probable shape of the fault surface, together with the northeastward rotation of the internal structures, suggests translation of the allochthon from the northeast to the southwest. The fact that metasedimentary tectonites are found in upper- plate position indicates that the listric (?) normal faulting post-dates the metamorphism of the Paleozoic and Mesozoic strata. Metamorphism in turn was part of the development of the Santa Catalina-Rincon metamorphic core complex. It is inferred that the Italian Trap Allochthon was emplaced in the final stages of profound regional extension which prevailed during the mid-Tertiary in southern Arizona.


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