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A study of the igneous intrusive rocks of the Dunnage Melange, Newfoundland /Lorenz, Brenna Ellen. January 1984 (has links)
Thesis (Ph.D.)--Memorial University of Newfoundland, 1985. / Typescript. Bibliography : leaves 211-220. Also available online.
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Geology of Mesoproterozoic anorthosite intrusions in the vicinity of Nain, Labrador /Voordouw, Ronald Jaap. January 2006 (has links)
Thesis (Ph.D.)--Memorial University of Newfoundland, 2006. / Restricted until October 2007. Bibliography: leaves 303-340. Also available online.
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A petrographic and geochemical characterization and the evaluation of the exploration potential for nickel sulfides in several mafic-ultramafic intrusive complexes in Newfoundland /Collins, Patrick G., January 2007 (has links)
Thesis (M.Sc.)--Memorial University of Newfoundland, 2007. / Includes bibliographical references (leaves 328-335). Also available online.
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The Forsterite-Anorthite-Albite system at 5 kb pressureRahilly, Kristen Elizabeth. January 2010 (has links)
Honors Project--Smith College, Northampton, Mass., 2010. / Includes bibliographical references (p. 44-45).
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Rare-earth elements in USGS rocks SCo-1 and STM-1, basalts from the Servilleta and Hinsdale formations, and rocks from the Stillwater and Muskox intrusionsKosiewicz, Stanley T. January 1973 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1973. / Typescript. Includes abstract and vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 132-135).
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Architecture and sedimentology of slope channel fills : an outcrop- and subsurface-based studyLi, Pan January 2017 (has links)
Slope channel systems represent significant but highly variable deep-water stratigraphic features and reservoir targets. Variations in architecture and component facies can take place along strike, depositional dip and stratigraphically. A better understanding of these variations permits improved sedimentological and architectural models. By integrating two outcrops (San Clemente, California and Baja California, Mexico) and one subsurface example (offshore Nile Delta), this study provides an opportunity to investigate cross-channel asymmetry, stratigraphic evolution and variability, vertical facies trends, and controls of slope channel systems. This study demonstrates that cross-channel asymmetry in facies and architecture is a lithology- and scale-independent feature, and preferentially occurs at channel bends and in the upper part of slope channel systems. Facies and architectural asymmetry are generally expressed as amalgamated, coarser-grained deposits displaced to the steeper channel edge (outer bend), and finer-grained deposits dominate towards the gentler channel edge (inner bend). A comparison of the systems exposed in Mexico and buried in the subsurface reveals a similar evolutionary trend, from initial sediment erosion/bypass, through early-stage laterally amalgamated channels, late-stage sinuous channels with levees/terraces, and final abandonment. However, pronounced variations exist in the late stage (e.g., presence or absence of lobes), and abandonment stage (e.g., presence or absence of MTDs plugging and channel avulsion). Additionally, for the first time, this study quantitatively demonstrates that early-stage and late-stage architectural elements are characterized by distinct patterns in preferred vertical facies transitions, based on Markov chain analysis of vertical successions. This study also suggests that both extrabasinal factors (e.g., relative sea-level) induced flow energy cycles and intrabasinal factors (e.g., folding and faulting, MTDs, channel bends) can exert a significant control on the architecture and/or evolution of slope channel systems.
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Plutonism and tectonic evolution of the Ras Gharib segment of the northern nubian shield, EgyptAbdel-Rahman, Abdel-Fattah Mostafa January 1986 (has links)
No description available.
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The intrusive rocks of the Hepburn metamorphic-plutonic zone of the central Wopmay Orogen, N.W.T. /Lalonde, André E. January 1986 (has links)
No description available.
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Geology, petrology and geochemistry of Traveler Rhyolite and Katahdin Pluton (northcentral Maine)Hon, Rudolph January 1976 (has links)
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1976. / Microfiche copy available in Archives and Science / Bibliography: leaves 232-239. / by Rudolph Hon. / Ph.D.
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Petrogenesis of the reversely zoned Turtle pluton, Southeastern CaliforniaAllen, Charlotte M. January 1989 (has links)
Few plutons with a reversed geometry of a felsic rim and mafic core have been described in the geologic literature. The Turtle pluton of S.E. California is an intrusion composed of a granitic rim and granodioritic core and common microgranitoid enclaves. Field observations, mineral textures, and chemistries, major and trace element geochemistry, and isotopic variability support a petrogenetic model of in situ, concomitant, magma mixing, and fractional crystallization of rhyolitic magma progressively mixed with an increasing volume of andesitic magma, all without chemical contribution from entrained basaltic enclaves. Hornblende geobarometry indicates the Turtle pluton crystallized at about 3.5 kb. A crystallization sequence of biotite before hornblende (and lack of pyroxenes) suggests the initial granitic magma contained less than 4 wt% H₂0 at temperatures less than 780°C. U-Pb, Pb-Pb, Rb-Sr and oxygen isotope studies indicate the terrane intruded by the Turtle pluton is 1.8 Ga, that the Turtle pluton crystallized at 130 Ma, that the Target Granite and garnet aplites are about 100 Ma, and that these intrusions were derived from different sources. Models based on isotopic data suggest the rhyolitic end member magma of the Turtle pluton was derived from mafic igneous rocks, and was not derived from sampled Proterozoic country rocks. Similarity of common Sr and Pb isotopic ratios of these rocks to other Mesozoic intrusions in the Colorado River Region suggest the Turtle pluton and Target Granite have affinities like rocks to the east, including the Whipple Mountains and plutons of western Arizona. P-T-t history of the southern Turtle Mountains implies uplift well into the upper crust by Late Cretaceous time so that the heating and deformation events of the Late Cretaceous and Tertiary observed in flanking ranges did not affect the study area. / Ph. D.
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