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Academic literature on the topic 'Stratigraphie – Équateur'
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Dissertations / Theses on the topic "Stratigraphie – Équateur"
Lopez, Ramos Eduardo. "Évolution tectono-stratigraphique du double bassin avant-arc de la marge convergente Sud Colombienne-Nord Équatorienne pendant le Cénozoïque." Nice, 2009. http://www.theses.fr/2009NICE4041.
Full textDuring the Cenozoic the subduction of the Farallon – Nazca plate below the NW South American margin allow developing a double fore arc-basin system (Tumaco – Borbon et Manglares), over an oceanic substratum accreted to the sudamerican continent. The objective of this these it is to reconstructed the tectono-sedimentary evolution of the double fore arc – basin system to define the principal parameters of deformation based on: 1-analysis of exploration wells; 2-interpretation of several seismic reflection profiles; 3- 2D back-stripping along selected seismic reflection profiles; 4-quatification of sedimentary flux. That result was observed the presence three mega sequences: 1) basal megasequence (Palaeocene – Eocene); 2) intermediate megasequence (Oligocene - Miocene); 3) upper megasequence (Miocene – Holocene). The individualization of the basins were product of depth crustal duplexing by the enter in subduction of the young and hot Nazca plate, and the convergence rate decreasing, that produce a decreasing in the slab dip and produce an increasing in the interplate coupling, and the fluid expulsion from the subjacent mantle wedge. These processes help the development of depth crustal duplex. The absence of crustal faults and the remarkable subsidence of the Tumaco basin suggest that this basin was result of crustal buckling by compression and sedimentary load
Hernández, Salazar María José. "Evolution of the forearc basins in Ecuador : from the accretion of oceanic allochthonous terranes to the uplift of the Andes and Coastal Cordilleras." Electronic Thesis or Diss., Sorbonne université, 2020. http://www.theses.fr/2020SORUS236.
Full textEcuador offers a remarkable opportunity to study the evolution of forearc basins installed on accreted oceanic plateau. The interpretation of a network of industrial 2D-Multichannel Seismic Reflection profiles, calibrated with borehole data and regional stratigraphy, allowed to determine the main stages of the forearc evolution. The pre and syn-accretionary stages were documented in the current inner basins by Campanian volcanoclastic deposits sourced by the volcanic island arc which topped the oceanic plateau. NE dipping thrusts ruled shortening at the beginning of the oblique collision between the oceanic plateau and continental plate. Reverse faults and folds are synchronous with a regional erosion linked the end of the accretion during the early-middle Eocene. The forearc sensu-stricto domain is established coeval with the subduction of Farallón plate under South American plate. A regional extensional regimen initiated the double forearc basin configuration along the future Coastal Cordillera during the early Neogene. This phase coincides with the subduction of the Nazca plate, which marks the initiation of modern forearc basins. The basin subsidence during the Miocene was led by the orogenic building effects of the Andean reliefs. The segmentation of the margin is a response of regional uplifts related to strike-slip and reverse reactivation of inherited crustal faults during the Plio-Pleistocene ages. The collision and subduction of the Carnegie ridge explain the forearc segmentation and the coeval Costal Cordillera exhumation. This study provides a remarkable example of the evolution of a non-accretionary-type forearc basin influenced by volcanic ridge subduction
Martillo, Bustamante Carlos. "Enregistrements stratigraphiques des cycles glacio-eustatiques et de la déformation durant le Pléistocène le long de la marge centrale d’Équateur : exploitation des données de la campagne ATACAMES." Thesis, Nice, 2016. http://www.theses.fr/2016NICE4020/document.
Full textThe aim of this study is to constrain recent deformation and stratigraphic evolution of an active margin, using sismo-stratigraphic analysis of Pleistocene sediment preserved on the margin shelf and upper slope along of the Central Ecuadorian margin. From the extensive geophysical and sedimentological investigations carried out during the ATACAMES expedition (2012), we are identified serveral basins in the Ecuadorian margin. A detailed analysis of the thickness, the lateral distribution and stacking patterns in these basins show a complex distribution of sediments in time and space. The seismic-sequence stratigraphy analysis related to eustatic cycles of the Pleistocene shows a regional regional unconformity at the base (1782-Ka as minimum age), which can correspond to the signature of the beginning of the Carnegie ridge collision
Deniaud, Yann. "Enregistrements sédimentaire et structural de l'évolution géodynamique des Andes équatoriennes au cours du Néogène : étude des bassins d'avant-arc et bilans de masse." Phd thesis, Université Joseph Fourier (Grenoble ; 1971-2015), 2000. http://www.theses.fr/2000GRE10040.
Full textBenitez, Stalin Benito. "Evolution géodynamique de la province côtière sud-équatorienne au Crétacé supèrieur-Tertiaire." Grenoble 1, 1995. http://www.theses.fr/1995GRE10071.
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