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 33 for “"paleogeography"”.
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Permo-triassic paleogeography and tectonics of the southwestern United States
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1985.
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Stratigraphic Architecture and Paleogeography of the Juniata Formation, Central Appalachians
Late Ordovician (Cincinnatian) strata of the central Appalachians provide an opportunity to study the effects of both tectonics and eustasy within a foreland-basin setting. The Juniata Formation consists of red sandstones, siltstones, and shales that were deposited as part of an extensive …
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Depositional environments and paleogeography of the Winnipeg Group (Ordovician), Williston Basin, North Dakota
<p> The Winnipeg Group (Upper Ordovician) unconformably overlies the Deadwood Formation (Cambrian - Lower Ordovician) over most of North Dakota, except in the extreme eastern part, where it lies directly on Precambrian basement rocks. The Winnipeg is conformably overlain by the Red River Formation …
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Paleogeography and Paleoenvironments of the Lower Unit, Fossil Butte Member, Eocene Green River Formation, Southwestern Wyoming
<p>During Eocene time sediment accumulated in Fossil Lake, in what developed to be a small linear and structurally controlled basin. Fossil Lake was one of several lakes into which the Green River Formation was deposited in Wyoming, Utah and Colorado.</p> <p>Detailed stratigraphic analysis of the …
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Paleogeography of Western North America: Insights from Detrital Zircon U-Pb Geochronology and Hf Isotope Geochemistry
Reconstructing the geologic and tectonic evolution of western North America from Paleozoic through Eocene time is the goal of this dissertation. Three geographical regions were selected for analysis using modern analytical techniques including U-Pb geochronology and Hf isotope geochemistry of …
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Facies, paleogeography, and the carbonate precipitation on the archean (2520 Ma) Campbellrand-Malmani carbonate platform, Transvaal supergroup, South Africa
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1995.
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Sediment incorporation into continental arc systems and paleogeography of the western North American Cordillera: Insights from the North Cascades, Washington
Continental magmatic arcs are the main tectonic setting where new continental crust is formed. Metasedimentary rocks exposed at the deep crustal levels of exhumed arc systems provide evidence for the vertical and horizontal transfer of upper crustal rocks into arcs within convergent-margin …
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Probabilistic source-to-sink analysis of the provenance of the California paleoriver: implications for the early Eocene paleogeography of western North America
The Latest Paleocene to Early Eocene Colton and Wasatch Formations exposed in the Roan Cliffs on the southern margin of the Uinta Basin, UT make up a genetically related lobate wedge of dominantly fluvial deposits. Estimates of the size of the river that deposited this wedge of sediment vary by …
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ΣΥΜΒΟΛΗ ΣΤΗ ΓΕΩΛΟΓΙΚΗ ΜΕΛΕΤΗ ΤΟΥ ΦΛΥΣΧΗ ΤΟΥ ΜΑΚΡΥΝΟΡΟΥΣ, ΑΚΑΡΝΑΝΙΑΣ
… OF FOLDING AND TRANSVERSE FRACTURING. 4. THE PALEOGEOGRAPHY CORRESPONDS, FOR THE NORTHSECTION OF MAKRYNOROS, TO AN ISOLATED FURROW, WHILE FOR THE SOUTHERN, TO THE MIDDLE AND OUTER SUBMARINE FAN.
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ΣΥΜΒΟΛΗ ΣΤΗ ΓΝΩΣΗ ΤΟΥ ΝΕΟΓΕΝΟΥΣ ΚΑΙ ΤΗΣ ΓΕΩΛΟΓΙΑΣ ΚΑΙ ΟΡΙΟΘΕΤΗΣΗΣ ΤΩΝ ΖΩΝΩΝ ΙΟΝΙΑΣ ΚΑΙ ΠΡΟΑΠΟΥΛΙΑΣ ΣΕ ΣΧΕΣΗ ΜΕ ΠΕΤΡΕΛΑΙΟΓΕΩΛΟΓΙΚΕΣ ΠΑΡΑΤΗΡΗΣΕΙΣ ΚΥΡΙΩΣ ΣΤΑ ΝΗΣΙΑ ΣΤΡΟΦΑΔΕΣ, ΖΑΚΥΝΘΟ, ΚΕΦΑΛΛΗΝΙΑ
… STUDIED. THE CONCLUSIONS WERE REACHED ABOUT THE PALEOGEOGRAPHY OF THE TRIASSIC EVAPORITIC BASIN, FROM DATA OF DEEP WELLS. ALSO THE WAY OF MOVEMENTS OF THE TRIASSIC EVAPORITES (DIAPIRS AND NEODIAPIRS) WAS EXAMINED AS WELL AS DETAILED REMARKS FOR THE NEOGENE AND QUATERNARY SEDIMENTS WERE MADE. …
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Stratigraphy and sedimentology of the northern part of the upper Gazelle Formation, eastern Klamath Mountains, northern California
… large part of the fragmentary record of Devonian paleogeography in northern California and is the only record of Devonian tectonics and sedimentation in the Yreka Terrane. The upper Gazelle, which overlies melange, is at least 1000 feet thick and composed of four laterally continuous sandstone …
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ΣΥΜΒΟΛΗ ΣΤΗ ΜΕΛΕΤΗ ΤΟΥ ΕΝΔΗΜΙΣΜΟΥ ΤΗΣ ΧΛΩΡΙΔΑΣ ΤΗΣ ΠΕΛΟΠΟΝΝΗΣΟΥ
… OF ENDEMISMUS IN PELOPONNESOS ARE EXAMINED (E.G. PALEOGEOGRAPHY- GEOLOGY-GEOGRAPHY-CLIMATE-BIOCLIMATE-VEGETATION-RELATION OF BIOCLIMATE AND REGETATION). A COMPLETE CATALOG OF THE GREEK ENDEMIC PLANTS PRESENT ON PELOPONNESOS, AS WELL AS THE EXCLUSIVELY ENDEMICS ON PELOPONESSOS IS GIVEN. THE …
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Tectonostratigraphy of the Shyok Suture Zone in Ladakh, NW India.
… margin in the Late Cretaceous and discusses the paleogeography of the India-Eurasia collision. This thesis constrains the age of the Shyok suture zone using multiple lines of evidence and shows that the Shyok suture zone records final closure of the ocean between India and Eurasia in the Eocene.
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No Triassic structural control of the development of the Middle Ground Arch, Eastern Gulf of Mexico
Reconstructing the paleogeography and basement structure of the Eastern Gulf of Mexico before and during deposition of the Upper Jurassic Norphlet, Smackover, and Haynesville Formations is important because these formations have hydrocarbon potential and determining the distribution may help us …
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Geochemistry and Basin Analysis of Laramide Rocky Mountain Basins
… strata to constrain the tectonic setting, paleogeography and paleoclimate of the Wind River basin. Annual and seasonal variation in ancient riverwater δ¹⁸O reconstructed from shell fossils shows that the Canadian Rocky Mountains was 4.5±1.0 km high in late Cretaceous-early Paleocene, and …
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Determining Hydrocarbon Distribution Using Resistivity, Tuscaloosa Marine Shale, Southwestern Mississippi
… throughout southwestern Mississippi, the paleogeography appears to have provided the perfect scenario for the development of this unconventional resource.</p>
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Paleocene Turbidite Deposition in the Central American Seaway (NW Costa Rica): Geochemical Analysis and Provenance of Detrital Spinel and Clinopyroxene
… sandstone bodies constrain the history of the paleogeography and tectonics of the region. Petrographic analyses of rock thin sections constrain source areas; geochemical analysis of individual detrital heavy minerals from rock samples give indications of sediment sources and tectonic setting …
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Syntectonic deposition and paleohydrology of the spring-fed Hualapai Limestone and implications for 5-6 MA integration of the Colorado River system through Grand Canyon : evidence from sedimentology, geochemistry and detrital zircon analysis
… to the Basin and Range province, and the early paleogeography of the Grand Canyon region. This study combines a tectonic investigation with a stratigraphic and sedimentologic analysis that includes new geochemistry, tephrochronology, and detrital zircon analysis to examine variations of the …
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Sequence Stratigraphy of Middle-Mississippian Carbonates of the Southern Appalachians: Tuscumbia Limestone, Tuscumbia, AL
… on deposition (e.g., sea level, tectonics, paleogeography, and paleoceanographic conditions). Additionally, possible sources of the silica (chert) found within these units (e.g., eolian dust, upwelling) are evaluated based upon thin section analysis. Four facies and one subfacies were …
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