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The Global ETD Search service is a free service for researchers
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Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 1 to 10 of 10 (0.031 seconds)Spelling suggestions: "subject:"fiddle devonian"" "subject:"fiddle jevonian""
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Stratigraphy and Facies of the Middle Devonian, Dundee Formation, Southwestern OntarioBirchard, Mark 08 1900 (has links)
<p> The Middle Devonian Dundee Limestones of Southwestern Ontario accumulated in the Michigan and Appalachian Basins, with deposition in part being controlled by the proximity to the Findlay and Algonquin arches. Six lithofacies were recognized in the Dundee Formation during detailed core and outcrop studies . Stratigraphic relations indicate that, prior to deposition of Dundee carbonates, a major regression exposed underlying Detroit River sediments adjacent to the arches. Subsequent transgression deposited reworked sands and shallow shelf, bioclastic limestones in most areas of the adjoining basins while in westernmost regions of the Appalachian Basin Columbus Formation sediments were accumulating adjacent to the Findlay Arch. </p> <p> Transgression became interrupted during middle Dundee time and a thick unit of lagoonal muds was deposited in the Appalachian Basin. A regionally well-developed firmground capping these mudstones indicates that a significant episode of non-deposition ensued. The equivalents of these muds in the Michigan Basin are pulses of coarse, reworked grainstones and rudstones indicating that substrates there were shallower and above wave base. Evidence of subsequent renewed transgression is preserved as middle to outer shelf moderately fossiliferous mudstones and wackestones overlying shallow shelf facies. </p> <p> Many friends, too many to mention here, made my stay at McMaster an enjoyable one. Mac wouldn't have been the same without the numerous challenges and imaginative adventures in which these people were always willing to participate. Francois Brissette, Bruce Willmer, Randy Meecham, Stu Miller, Steve Beneteau and other members of the Rockbusters Football and Aureoles Baseball teams provided continuous entertainment both on and off of the sports field. Their dedication and light-hearted approach allowed me to maintain a respectable degree of sanity throughout my studies. </p> <p> Finally, I would like to thank my family for their continual assistance, encouragement and support provided during the pursuit of my academic endeavours. </p> / Thesis / Master of Science (MSc)
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TESTING FOR PALEOCOMMUNITY RECURRENCE ACROSS A REGIONAL BIOTIC TURNOVER EVENT IN THE MIDDLE DEVONIAN HAMILTON GROUP AND TULLY FORMATION OF NEW YORK AND PENNSYLVANIABONELLI, JAMES JR. R. 30 June 2003 (has links)
No description available.
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The Dynamics of Rapid, Asynchronous Biotic Turnover in the Middle Devonian Appalachian Basin of New YorkSessa, Jocelyn 30 June 2003 (has links)
No description available.
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MIDDLE DEVONIAN FAUNAS OF THE MICHIGAN AND APPALACIAN BASINS: COMPARING PATTERNS OF BIOTIC STABILITY AND TURNOVER BETWEEN TWO PALEOBIOGEOGRAPHIC SUBPROVINCESBARTHOLOMEW, ALEXANDER JESS January 2006 (has links)
No description available.
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Anatomy of Middle Devonian Faunal Turnover in Eastern North America: Implications for Global Bioevents at the Eifelian-Givetian Stage BoundaryDeSantis, Michael K. January 2010 (has links)
No description available.
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Rotas migratórias de braquiópodes (família Leptocoeliidae & família Tropidoleptidae) das bordas devonianas das bacias do Paraná e Parnaíba /Ribeiro, Victor Rodrigues January 2019 (has links)
Orientador: Renato Pirani Ghilardi / Resumo: A distribuição dos continentes no Devoniano era diferente do que temos atualmente. As bacias sedimentares que ocupavam as áreas próximas do Equador (e.g. Parnaíba, Amazonas, Solimões) hospedavam ecossistemas com uma grande diversidade de espécies. Por outro lado, as bacias que ocupavam regiões de alta latitude, como Paraná, hospedavam uma fauna de águas mais frias. Esta fauna, formalmente nomeada como Fauna Malvinocáfrica, é composta por uma diversidade baixa de Gastrópodes, Moluscos, Trilobitas e Braquiópodes (Australocoelia, Australospirifer, Australostrophia, Iridistrophia, Meristelloides, Derbyina, Lingula e Orbiculoidea).NaBaciadoParaná(Centro-Sulbrasileiro)afaunadevonianaestá retratada na Formação Ponta Grossa, já na Bacia do Parnaíba (Norte-Nordeste brasileiro) a fauna ocorre pontualmente, justamente devido às condições paleoambientais e climáticas. No Devoniano Médio, as bacias do Paraná e Parnaíba, em resposta a subida do nível do mar, passaram por um período de mistura faunística, justificada pela ocorrência de Tropidoleptus carinatus (espécie de mares equatoriais) no meio das faunas Malvinocáfricas da Bacia do Paraná. Com a finalidade de averiguar tais eventos de dispersão, foram levados em consideração os gêneros Tropidoleptus e Australocoelia, sendo um oriundo de mares quentes e outro de mares frios, respectivamente. Análises morfofuncionais dos exemplares, levantamentos bibliográficos e trabalhos de campo indicaram que espécies de braquiópodes... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The distribution of continents in the Devonian was different from what we have today. The sedimentary basins that occupied the areas near Ecuador (e.g. Parnaíba, Amazonas, Solimões) hosted ecosystems with a big diversity of species. On the other hand, basins that occupied high latitude regions, such as Paraná Basin, hosted a colder water fauna. This fauna, formally named as Malvinokaffric Realm, is composed of a low diversity of Gastropods, Molluscs, Trilobites and Brachiopods (Australocoelia, Australospirifer, Australostrophia, Iridistrophia, Meristelloides, Derbyina, Lingula and Orbiculoidea). In the Paraná Basin (Center-South Brazil) the Devonian fauna is portrayed in the Ponta Grossa Formation, while in the Parnaíba Basin (North-Northeast Brazil) the fauna occurs punctually, precisely due to paleoenvironmental and climatic conditions. In the Middle Devonian, the Paraná and Parnaíba basins, in response to sea level rise, underwent a period of faunal mixing, justified by the occurrence of Tropidoleptus carinatus (species from equatorial seas) in the middle of the Malvinokaffric faunas of the Paraná Basin. In order to investigate such dispersal events, the genera Tropidoleptus and Australocoelia were taken into consideration, one from warm seas and one from cold seas, respectively. Morphofunctional analyzes of the specimens, bibliographic surveys and fieldwork indicated that species of equatorial brachiopods did not enter the Paraná Basin, but were restricted to the temperat... (Complete abstract click electronic access below) / Mestre
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PALEOECOLOGICAL AND PALEOENVIRONMENTAL ANALYSIS OF THE MIDDLE DEVONIAN DUNDEE FORMATION AT WHITEHOUSE, LUCAS COUNTY, OHIOWright, Christopher Eric 06 November 2006 (has links)
No description available.
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Paleontology Of Middle And Upper Devonian Formations Of Northwest Ohio: Documenting Earth System Evolution For Scientific And Educational PurposesMason, Chad R. 14 August 2019 (has links)
No description available.
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Geospatial analysis of ecological associations and successions in Middle Devonian bioherms of the Great Lakes regionWalters, Daryl Georjeanne 15 July 2016 (has links)
No description available.
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Geochemie Porifera-reicher Mud Mounds und Mikrobialithe des Mittel- und Oberdevons (Westaustralien, Nordfrankreich) / Geochemistry of Porifera-rich mud mounds and microbialites of the Middle and Upper Devonian (Western Australia, Northern France)Hühne, Cathrin 07 November 2005 (has links)
No description available.
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