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 13 of 13 for “"Lagerstätte"”.
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An integrated geochemical and sedimentological analysis of a lacustrine Lagerstätten in the Triassic Cow Branch Formation of the Dan River Basin
… of the Dan River Basin is host to a world-class lagerstätte deposit of exceptionally preserved insects, among other organisms. The lagerstätte occurs within a cyclic, lacustrine sedimentary succession, hypothesized to have been driven by Milankovitch climate forcing. Through an integrated …
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Biogeographic and biological comparisons between the Emu Bay Shale (Kangaroo Island, South Australia) and other Cambrian Burgess Shale-type biotas
Konservat-Lagerstätten, or fossil deposits exhibiting exceptional preservation of non-biomineralised material, are particularly prevalent in the Cambrian, and offer us great insight into the evolution and ecology of early animals and communities. The Emu Bay Shale (EBS) from the north coast of …
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Petrography, geochemistry and stable isotope characteristics of the Navachab gold deposit, Namibia
Die Navachab Goldlagerstätte liegt in der Südlichen Zentralzone des Pan-Afrikanischen Damara Orogens in Namibia. Der Aufbau der Südlichen Zentralzone ist durch NO-SW streichende Domstrukturen von mehreren km Durchmesser gekennzeichnet. Navachab befindet sich am steil stehenden, NW-lichen Schenkel …
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Are 'exceptionally' preserved skeletal fossils necessarily exceptional chemically and cytologically?
… a feathered dinosaur specimen from the Jehol Lagerstätte to assess claims of blood cell preservation and the state of potential biomolecular preservation. Beipiaosaurus inexpectus is a fairly complete specimen with preserved feathers. Though crushed, fine details in thin section are prevalent. …
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Geochemical study on reservoir and source rock asphaltenes and their significance for hydrocarbon generation
… allem an Proben einer untersuchten Typ II-S Erdöllagerstätte ersichtlich. Die hier untersuchten Erdöl- und Muttergesteinsasphaltene zeigen eine geringere thermische Stabilität im Vergleich zum Kerogen auf. Die untersuchten Pyrolysate konnten jedoch keine strukturellen Unterschiede aufzeigen, die …
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Exceptional Preservation and Bias in the Fossil Record
… preserved vermiform fossils from the Winneshiek Lagerstätte in northeastern Iowa and microfossils from the Doushantuo Formation of South China, respectively. Chapter two aims at resolving the identity of the Winneshiek vermiform fossils and presents evidence that these structures represent …
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The impact of global environmental changes on exceptional preservation, extinction, and recovery in the early Jurassic (late Pliensbachian-Toarcian)
… also enhanced exceptional fossil preservation (Lagerstätte preservation). This Ph.D. dissertation addresses how changing environmental conditions in the Early Jurassic affected the exceptional preservation, extinction, and recovery of organisms, specifically across the Pliensbachian/Toarcian …
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Characterization of an Upper Permian tight aas reservoir : a multidisciplinary, multiscale analysis from the Rotliegend, Northern Germany
This thesis describes a multidisciplinary, multiscale approach to the analysis of tight gas reservoirs. It focused initially on the facies architecture of a Permian tight gas field in the Southern Permian Basin (SPB), East Frisia, Northern Germany. To improve field development, 3D seismic data, …
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Sedimentary facies reconstruction and kinematic restoration of an Upper Permian tight gas field, north-western Germany
This study of a tight gas reservoir, located at ~4200 metres depth in the Upper Rotliegend II (Upper Permian) of north-western Germany, includes a geological framework model for the sedimentary facies distribution, which is strongly influenced by the structural grain. Research focused on …