Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 116 for “"Volcanic rocks"”.
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Rare earth fractionation in Hawaiian volcanic rocks.
Massachusetts Institute of Technology. Dept. of Geology and Geophysics. Thesis. 1966. Ph.D.
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Micro-geochemistry of the mantle and its volcanic rocks
This thesis comprises three studies which utilise detailed micro-sampling techniques to understand the effects of melt infiltration in the continental lithosphere and the relationship of deeply derived kimberlite melts to lithospheric processes. To be able to make these links it is necessary to …
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Geochemistry of boninites and other low TiO2 island arc volcanic rocks
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1983.
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Evolution of tertiary plutonic and volcanic rocks near Ravenna, Granite County, Montana
Photocopy of typescript.
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Evolution of tertiary plutonic and volcanic rocks near Ravenna, Granite County, Montana
Photocopy of typescript.
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Helium isotope geochemistry of oceanic volcanic rocks : implications for mantle heterogeneity and degassing
The concentrations and isotopic compositions of helium have been measured in a number of mantle derived oceanic basalts. The goal of this research is to use the helium isotopic systematics to constrain the nature and origin of mantle heterogeneity in the oceanic mantle. Studies of helium …
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Helium isotope geochemistry of oceanic volcanic rocks : implications for mantle heterogeneity and degassing
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Science, 1982.
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Geochemical methods for evaluating the origin and evolution of ground water in volcanic rocks
… evolution of ground water on La Palma, a volcanic island in the Canary Archipelago. Stable isotopes of oxygen, hydrogen, carbon and sulfur were successfully used to delineate recharge zones and identify solute sources. Laboratory study of water-rock interactions established the source of …
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Plutonic and volcanic rocks from central Chile (33 ̊- 42 ̊S) : geochemical evidence regarding their petrogenesis.
Thesis. 1975. Ph.D.--Massachusetts Institute of Technology. Dept. of Earth and Planetary Sciences.
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Helium and lead isotope geochemistry of oceanic volcanic rocks from the East Pacific and South Atlantic
… and thorium. The isotopic signatures in oceanic volcanic rocks provide constraints on the temporal evolution of mantle source regions and volcanic magmas. He and Pb isotopes were measured in glassy basalts from young seamounts in the East Pacific, and in phenocrysts and corresponding whole rocks, …
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Geochemistry and geohydrology of the Deccan volcanic rocks of Akole Taluka, Ahmednagar District, Maharashtra State, India.
… the Thakurvadi Formation. Petrographically the rocks are porphyritic to microphyric and aphyric, fine- to medium-grained massive basalts. They are commonly amygdaloidal filled with zeolites. Two suites were defined on the basis of phenocryst content: Suite No 1 with olivine, plagioclase, …
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Helium and lead isotope geochemistry of oceanic volcanic rocks from the East Pacific and South Atlantic
… and thorium. The isotopic signatures in oceanic volcanic rocks provide constraints on the temporal evolution of mantle source regions and volcanic magmas. He and Pb isotopes were measured in glassy basalts from young seamounts in the East Pacific, and in phenocrysts and corresponding whole rocks, …
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Geology of the late precambrian Flat River complex and associated volcanic rocks near Durham, North Carolina
… relations between the intrusive and extrusive rocks indicate that the Flat River was emplaced at very shallow levels (< l km) and acted as the source for most of the volcanic material surrounding the complex. The age determined for the Flat River Complex indicates that deposition of the …
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Engineering geological characterization of volcanic rocks of ethiopian and sardinian highlands to be used as construction materials
… on the “Geoengineering characterization of volcanic rocks from Ethiopian and Sardinian highlands to be used as construction materials”. Though, the two project areas are geographically far apart, both are partly covered with volcanic rocks mainly consisting of basic and subordinate felsic …
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The metamorphic sheet and underlying volcanic rocks beneath the Semail ophiolite in the northern Oman mountains of Arabia
… and consists of sub-ophiolitic metamorphic rocks and serpentinite, alkaline and tholeiitic basalts (the Haybi volcanics), associated with mountain-sized "Exotic" limestones and an Upper Cretaceous sedimentary melange. The rocks of the Haybi complex are bounded by major thrust planes, the …
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The geology and geochemistry of volcanic rocks in the Lava Mountains, California: Implications for Miocene development of the Garlock Fault
… were used to develop correlations of volcanic units across the Garlock Fault between the Lava Mountains to the south and the El Paso Mountains to the north of the fault. This work demonstrated a total of 32--40 km movement of the fault since 10.3 Ma, which indicates a displacement rate …
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