Spelling suggestions: "subject:"volcanic ash, turf, etc"" "subject:"volcanic ash, cuff, etc""
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Dynamic and cyclic properties in shear of tuff specimens from Yucca Mountain, NevadaJeon, Seong Yeol, 1972- 11 September 2012 (has links)
Yucca Mountain was designated as the proposed high-level radioactive waste repository by the U.S. Government in 1987. The proposed repository design requires high safety for a long maintenance period of 10,000 years. To satisfy this requirement, evaluation of the influence of earthquakes on the repository is necessary. Prediction of earthquake-induced ground motions around the repository requires knowledge of the dynamic properties of the geologic materials around the repository. The main geologic materials in the vicinity of Yucca Mountain are tuffs (ignimbrites) which are formed by the deposition of volcanic ash mixed with erupted volcanic gas, water vapor and pyroclastic material. Two types of dynamic tests, (1) the free-free, unconfined, resonant column and direct arrival test (freefree URC test) and (2) the fixed-free resonant column and torsional shear test (fixed-free RCTS test), were used to measure the dynamic properties of tuffs. The emphasis in this dynamic testing was evaluation of shear modulus (G) and material damping ratio (D) of the tuffs in the small-strain (linear) and mildly nonlinear (to strains of about 0.02 %) ranges. To evaluate the influence of various parameters on G and D of tuffs, correlations with other features such as total unit weight, porosity and stratigraphic unit were performed and general relationships between them are proposed. In addition, an unconfined, slow-cyclic torsional shear (CTS) device was developed and used to measure the cyclic shear properties of the tuffs from Yucca Mountain at larger strain amplitudes than possible in the fixed-free RCTS tests. Additionally, the CTS device was also used to determine the shear failure strength of the tuffs. By combining the cyclic shear properties of the tuffs from the CTS tests and the dynamic properties of the tuffs from the fixed-free RCTS tests, complete dynamic property curves from small-strain to failure strain were evaluated.
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Volcanologie physique et sédimentologie du groupe volcanique de Piché et relations stratigraphiques avec les groupes sédimentaires encaissants de Pontiac et de Cadillac /Landry, Jacques. January 1991 (has links)
Mémoire (M.Sc.T.)-- Université du Québec à Chicoutimi, 1991. / Bibliogr.: f. 83-86. Document électronique également accessible en format PDF. CaQCU
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Étude volcanologique du centre volcanique felsique du lac des Vents, région de Chibougamau /Potvin, Robin. January 1991 (has links)
Mémoire (M.Sc.T.)--Université du Québec à Chicoutimi, 1991. / Document électronique également accessible en format PDF. CaQCU
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Étude de la genèse des pépérites et de leur contexte volcano-sédimentaire, formation de Blondeau, Chibougamau, Québec /Lefebvre, Christian. January 1991 (has links)
Mémoire (M.Sc.T.)-- Université du Québec à Chicoutimi, 1991. / "Mémoire présenté en vue de l'obtention de la maîtrise en sciences de la terre" CaQCU Bibliogr.: f. 166-171. Document électronique également accessible en format PDF. CaQCU
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The Quaternary geology and sequence stratigraphy of Lake Bonneville deposits in the Matlin quadrangle, Box Elder County, northwestern Utah /Cavas, Matthew P. January 2003 (has links)
Thesis (M.S.)--Ohio University, November, 2003. / Includes bibliographical references (p. 73-77).
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Petrology and geochemistry of volcanic rocks of the Lantau Peak Area, Lantau Island, Hong Kong /So, Chak-tong, Anthony. January 1999 (has links)
Thesis (M. Phil.)--University of Hong Kong, 1999. / Includes bibliographical references (leaves 123-128).
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Tracking the evolution of mid cenozoic silicic magma systems in the southern Chocolate Mountains region, California using zircon geochemistry and quartz and zircon geothermometry /Needy, Sarah Katherine. January 2009 (has links)
Thesis (M.S.)--Indiana University, 2009. / Department of Earth Sciences, Indiana University-Purdue University Indianapolis (IUPUI). Advisor(s): Andrew P. Barth, Gabriel Filippelli, Jeffery Wilson. Includes vitae. Includes bibliographical references (leaves 62-64).
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Geology of the middle and upper Eocene McIntosh Formation and adjacent volcanic and sedimentary rock units, Willapa Hills, Pacific County, southwest Washington /Moothart, Steve Rene' January 1992 (has links)
Thesis (M.S.)--Oregon State University, 1993. / Includes mounted photographs. Three folded plates in pocket. Typescript (photocopy). Includes bibliographical references (leaves 213-225). Also available on the World Wide Web.
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Die sedimentologische Entwicklung der Permabfolge im westlichen Südtirol (N-Italien)Fels, Helmut, January 1900 (has links)
Thesis (doctoral)--Universität zu Köln, 1982. / Bibliography: p. 131-144.
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The Quaternary geology and sequence stratigraphy of Lake Bonneville deposits in the Matlin quadrangle, Box Elder County, northwestern UtahCavas, Matthew P. January 2003 (has links)
Thesis (M.S.)--Ohio University, November, 2003. / Title from PDF t.p. Includes bibliographical references (p. 73-77)
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