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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 350 for “"Igneous"”.
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Simulated lunar igneous surface rock
Thesis (M.S.)--Michigan State University. Dept. of Geology, 1968
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Silicate Melt Inclusions in Igneous Petrogenesis
… obtained for ancient volcanic systems. In recent igneous systems, melt inclusions are commonly preserved as optically clear homogeneous glass representative of magma stored at depth before eruption. Melt inclusions are difficult to recognize in quartz phenocrysts from porphyry copper system …
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Petrogenesis of the Moosehorn igneous complex, Maine
… Province suggest a bimodal distribution of igneous rocks in both space and time. The earlier magmatic event is represented by the development of large igneous complexes which occur along a magmatic axis extending from Calais to Penobscot Bay, Maine. These complexes are dominated by mafic …
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Igneous processes of the early solar system
… and numerical methods are used to explore the igneous evolution of the early solar system. Chapters 1 and 2 detail the results of petrographic and experimental studies of a suite of primitive achondritic meteorites, the ureilites. The first chapter presents data that reveal correlations between …
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Attenuation in igneous rocks at seismic frequencies
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1979.
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Applications of Melt Inclusions to Problems in Igneous Petrogenesis
Understanding the different igneous processes that magmas undergo is important for a variety of reasons including potential hazards associated with volcanoes in populated regions, magmatic hydrothermal ore deposition, and tectonic processes. One method of obtaining geochemical data that can help …
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Petrology and Structure of Three Basic Igneous Complexes, Southwestern Maine
Made available in DSpace on 2014-12-04T19:14:04Z (GMT). No. of bitstreams: 1 6104315.pdf: 5828564 bytes, checksum: 10c926cb99f883e3726b3bc3cf97f3e5 (MD5) Previous issue date: 1961
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Petrography and petrology of the igneous intrusive in Woodson County, Kansas
Digitized by Kansas State University Libraries
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Petrography and petrology of the igneous intrusive in Woodson County, Kansas
Digitized by Kansas State University Libraries
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Igneous and metamorphic processes in the Shap Granite and its aureole
The Shap Granite outcrops in eastern Cumbria, N.W. England and is a post—orogenic granite intruded during the Lower Devonian (ie 394 Ma) into rocks of Ordovician to Siturian age. It is of adamellite composition and is notable in having megacrysts of orthoclase which crystallised late (relative to …
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A new approach to mass balance modeling: applications to igneous petrology
… to investigate mass balance relationships in igneous systems. A chi square (x²) minimization technique is used to solve the set of linear equations. The x² technique is superior to R² techniques because it considers the analytical errors on measurement data. Singular Value Decomposition (SVD) …
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Petrography and geochemistry of the Gross Spitzkoppe Igneous Complex Central-Western Namibia
The Gross Spitzkoppe Igneous Complex of western central Namibia represents an anorogenic magmatic event related to the opening of the South Atlantic ocean during the late Mesozoic period. The magmatic event (Tristan mantle plume?) is characterised by bimodal epizonal emplacement of evolved melt …
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The isotope geochemistry of uranium: Igneous petrology, ore deposits, and groundwater contamination
This study applies high precision 238U/235U measurement techniques two three geologic settings: basalt differentiation, uranium ore genesis, and the remediation of a uranium-contaminated groundwater system. In the latter two cases, 238U/235U is used as a tracer of uranium reduction. 238U …
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Insights into magmatic processes from the crystal orientation mapping of igneous microstructures
… is now emerging as a useful tool for studying igneous rocks. In this thesis, I combine EBSD with field, petrographic and geochemical observations to tackle long-standing problems in igneous petrology. The first half of the thesis utilises EBSD to explore crystal interactions in magma, focusing …
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The petrogenesis of the mesozoic Maningoza suite igneous complexes, central west Madagascar
The Maningoza Suite is a set of Mesozoic igneous sub-volcanic to volcanic complexes situated in the Mahajanga sedimentary and volcanic basin in central-west Madagascar. The Maningoza Suite is exposed in an area roughly 50 x 80 km and consists of the Ambereny, Ambohitrosy, Ankibobozaka, Berevo, …
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The geochemistry of the Karoo igneous volcanic and intrusive rocks of Botswana
… area of 150 000km2 and form part of the Karoo Igneous Province of southern Africa. The distribution of Karoo basalts in Botswana is limited essentially to three main sub-basins, the Central Kalahari Subbasin, northern Botswana and the Tuli Syncline and a major dyke swarm, with a WNW strike, …
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