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1	The stratigraphy, geochemistry, and mineralogy of two ash-flow tuffs in the Deschutes Formation, central Oregon / Cannon, Debra May. January 1984 (has links) Thesis (M.S.)--Oregon State University, 1985. / One map and one ill. folded in pocket. Typescript (photocopy). Includes bibliographical references (leaves 119-127). Also available online. Volcanic ash, tuff, etc.
2	Correlation and petrological interpretation of abyssal and terrestrial tephra layers Federman, Alan Neil 18 April 1984 (has links) Graduation date: 1985 Volcanic ash, tuff, etc.
3	Volcanic and tectonic evolution of the Hazelton group in Spatsizi river (104H) map-area, north-central British Columbia. Thorkelson, Derek John, Carleton University. Dissertation. Geology. January 1992 (has links) Thesis (Ph. D.)--Carleton University, 1992. / Also available in electronic format on the Internet. Volcanic Ash, Tuff, Etc.
4	La palagonitisation un aspect du volcanisme sous marin : l'alteration du verre basique de palagonia (Sicile) / Honnorez, José. January 1967 (has links) Thesis (Ph. D.)--Universite Libre de Bruxelles, 1967. / Includes bibliographical references. Volcanic ash, tuff, etc.
5	Petrology of mesozoic-cenozoic volcanic rocks in Northwestern Syria Ma, Shing-ka'i, George. January 2010 (has links) Thesis (Ph. D.)--University of Hong Kong, 2010. / Includes bibliographical references (p. 189-210). Also available in print. Volcanic ash, tuff, etc.
6	Epithermal alteration in tuff of Sulfur Creek, Yellowstone National Park, Wyoming Manion, Jennifer Leigh. January 2010 (has links) (PDF) Thesis (M.S. in geology)--Washington State University, August 2010. / Title from PDF title page (viewed on July 28, 2010). "School of Earth and Environmental Sciences." Includes bibliographical references (p. 134-140). Volcanic ash, tuff, etc.
7	Petrology of mesozoic-cenozoic volcanic rocks in Northwestern Syria / Ma, Shing-ka'i, George. January 2010 (has links) Thesis (Ph. D.)--University of Hong Kong, 2010. / Includes bibliographical references (p. 189-210). Also available online. Volcanic ash, tuff, etc.
8	A study of some volcanic rocks from Harrison Mills, British Columbia Burley, Brian John January 1954 (has links) Large bodies of keratophyric tuffs and keratophyric flows from Harrison Mills, British Colombia are described structurally and petrologically. The origin of the albitic feldspar in these rocks is discussed and concluded to be primary. Petrological comparisons are made between the tuffs and the flows. Both types of rocks were artificially fused to glasses, and the refractive indices of these glasses are compared. From these studies the tuffs and the lavas are concluded to be consanguineous. The keratophyric flows were analysed chemically and found similar to keratophyric rocks from other localities. The origin of the lavas is discussed. It is concluded that these rocks were probably formed by differentiation of a trondjhemitic magma possibly contaminated by soda rich sediments. / Science, Faculty of / Earth, Ocean and Atmospheric Sciences, Department of / Graduate Volcanic ash, tuff, etc.
9	Petrology of the Bend pumice and Tumalo tuff, a Pleistocene Cascade eruption involving magma mixing / Hill, Brittain Eames. January 1984 (has links) Thesis (M.S.)--Oregon State University, 1985. / One map folded in pocket. Typescript (photocopy). Includes bibliographical references (leaves 85-90). Also available online.
10	Numerical inverse interpretation of pneumatic tests in unsaturated fractured tuffs at the Apache Leap Research Site Vesselinov, Velimir Valentinov. January 2000 (has links) (PDF) Thesis (Ph.D. - Hydrology and Water Resources)--University of Arizona. / Includes bibliographical references (leaves 236-252).

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