Mémoire (M.Sc.A.)- Université du Québec à Chicoutimi, 1983. / "Mémoire présenté en vue de l'obtention de la maîtrise en sciences appliquées en géologie" 6 cartes en pochettes. CaQCU CaQCU Document électronique également accessible en format PDF. CaQCU

Thèse (M.Sc.T.) -- Université du Québec à Chicoutimi, 2006. / Bibliogr.: f. 204-211. Document électronique également accessible en format PDF. CaQCU

Thesis (M.S.)--Rutgers University, 2010. / "Graduate Program in Geological Sciences." Includes bibliographical references (p. 32-36).

Thesis (M.S.)--Brigham Young University. Dept. of Geology, 2004. / Includes bibliographical references (leaves 187-189).

Thesis (Ph.D.)--University of Alberta, 2009. / Title from PDF file main screen (viewed on Mar. 18, 2010). A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Doctor of Philosophy, Department of Earth and Atmospheric Sciences, University of Alberta. Includes bibliographical references.

Thesis (Ph. D.)--Rutgers University, 2008. / "Graduate Program in Geological Sciences." Includes bibliographical references.

Thesis (M.Sc.)--Memorial University of Newfoundland, 2003. / Bibliography: leaves 132-143. Also available online.

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Traditionally, sedimentation at active plate margins is thought to be dominantly controlled by tectonism, with any climatic cyclicity being overprinted. Since the early Miocene, Cyprus has been situated above an active subduction zone, which has strongly influenced the regional tectonics. Global climate change also occurred during the Miocene marking a transition from relative global warmth of the early-Miocene to the Neogene 'icehouse world'. Cyprus has extensive outcrops of Miocene to Pleistocene deep water sediments and provides an ideal setting to test the magnitude of climatic signals in tectonically active areas, and thus deduce the relative roles of climate and tectonics on sedimentation. Detailed sedimentary logging and biostratigraphical dating of the Miocene-age pelagic Pakhna Formation reveals that the formation can be divided into depositional sequences,bounded by hard grounds or erosion surfaces, and contains a distinct pattern of marl-chalk couplets. These sequences correlate, within the constraints of biostratigraphy to European and New Jersey Margin sequence chronostratigraphy. Three smaller scales of cyclicity are identified by stratigraphic time series analysis, and are likely to correspond to the 100 kyr, 41ky and ~20 ky Milankovitch cycles. Stable oxygen and carbon isotope analysis on pelagicforaminifera indicate the following climatic influences; (1) chalk-marl couplets probably record climatically controlled supply of terrigenous material; (2) a strong link between 8¹⁸O maxima and sequence boundaries; and (3) the globally recognised 8¹³C Monterey ExcursionIS present. The increasing abundance of tectonically derived Troodos material partially masks the climatically controlled sedimentation in the Pakhna Formation south of the Troodos massif. Rapid Troodos uplift during the Pliocene-Pleistocene is demonstrated by the high abundance of ophiolite derived clasts in the Khirokitia-Psematismenos submarine fan-complex. Here,graphic logging, and biostratigraphy suggests that the six cycles observed are likely to correlate to cycles identified in European sequence chronostratigraphy, though higher frequency,climatic cyclicity is obscured by the overprint of tectonic activity.

Orientador: Giancarlo Scardia / Resumo: O Nordeste Brasileiro apresenta extensa história geológica relacionada a tectonismo divergente e estabelecimento de sequências tipo, responsáveis pela separação dos continentes Sul-americano e Africano durante o Cretáceo. Tais eventos levaram à formação de um conjunto de bacias sedimentares denominadas Bacias Interiores do Nordeste, dentre as quais, o Grupo Iguatu. As bacias abrangem uma área sedimentar rasa de aproximadamente 1135 km2, parcialmente recoberta pelos açudes Orós e Lima Campos e fortemente controladas pela Faixa Cariri-Potiguar e suas zonas de cisalhamento proterozoicas NE-SW. É composto pelas Bacias Iguatu, Malhada Vermelha, Lima Campos e Icó, preenchidas por depósitos fluviais e por sedimentos finos a muito finos de planícies de inundação, além de depósitos de canais distais e de barras cascalhosas distribuídos isoladamente. Indícios de uma interação fluvio-eólica entre períodos chuvosos formadores de elementos arquiteturais fluviais e períodos secos no qual predominam processos de transporte eólico também podem ser observados nos estágios deposicionais finais da evolução das bacias. A Bacia Iguatu, devido ao seu cenário geomorfológico mais favorável, funciona como um bom guia estratigráfico para a aplicação dos estudos. A partir do mapeamento geológico, análise petrográfica, análise de fácies e interpretação de elementos estruturais foram determinadas quatro unidades litoestratigráficas para o Grupo Iguatu: Formação Icó, Malhada Vermelha, Lima Campos e Orós. ... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The northeast of Brazil presents an extensive geological history related to divergent tectonism and establishment of guide sequences through the separation of the South American and African continents during the Cretaceous. These events led to the formation of a set of sedimentary basins called the Interior Basins of Northeast Brazil, among which the group of sedimentary basins of lguatu or lguatu Group. The basins are comprised of a shallow sedimentary area with approximately 1135 km2, partially covered by the Orós and Lima Campos water reservoirs and strongly controlled by the Cariri-Potiguar trend and NE-SW proterozoic shear zones. lt is composed of the sub­basins of lguatu, Malhada Vermelha, Lima Campos and lcó, filled by fluvial deposits and by fine to very fine sediments typical of floodplains, as well as distal channels and gravei bars distributed randomly. Evidence of a fluvial-aeolian interaction between rainy seasons forming architectural elements of fluvial systems and dry periods with dominance of aeolian processes can also be observed in the final stages of deposition. The sub-basin of lguatu, due to its favorable geomorphological scenario, works as a good stratigraphic guide for the application of the studies. Geological mapping, petrographic analysis, facies association and interpretation of structural elements, stablished four lithostratigraphic units for the lguatu Group: the lcó, Malhada Vermelha, Lima Campos and Orós Formations. Thermal demagnetization defi... (Complete abstract click electronic access below) / Mestre