Littérature scientifique sur le sujet « Cicatrices (tectonique) – Andes (nord) »
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Articles de revues sur le sujet "Cicatrices (tectonique) – Andes (nord)":
Naranjo, José A., et Roland P. Paskoff. « Volcanisme, tectonique et réseau hydrographique sur le piémont andin du désert du nord du Chili ». Géographie physique et Quaternaire 38, no 2 (29 novembre 2007) : 201–4. http://dx.doi.org/10.7202/032553ar.
Oliveros, Veronica, Pablo Moreno-Yaeger et Laura Flores. « Igneous Rock Associations 25. Pre-Pliocene Andean Magmatism in Chile ». Geoscience Canada, 10 juillet 2020, 65–82. http://dx.doi.org/10.12789/geocanj.2020.47.158.
Thèses sur le sujet "Cicatrices (tectonique) – Andes (nord)":
Aizprua, Carlos. « Structure et développement du bassin d'avant-arc du sud-ouest des Andes du Nord ». Electronic Thesis or Diss., Université de Lille (2018-2021), 2021. http://www.theses.fr/2021LILUR001.
The SW Ecuador‐NW Peru forearc region is the southernmost location, where the Caribbean large igneous province (CLIP) interacted with the South American margin since the Late Cretaceous. The accretion of the CLIP to the margin led to the entrapment of the North Andean crustal Sliver, conforming the underlying basement of the forearc region in Ecuador, whereas in NW Peru, forearc depocenters involve rocks of continental affinity. Many existing tectonic reconstructions have treated these two areas independently, largely based on their crustal affinities. In contrast, this study integrates previous studies into an analysis of unpublished seismic profiles, potential field data, outcrop stratigraphy, and recent studies dealing with the dynamics of allochthonous terrane accretion along continental margins. Our integrated approach shows that SW Ecuador was dominated by a Late Cretaceous deforming outer wedge, which may have constituted a remnant of a northeast or northwest dipping obliquely obducted oceanic block at the edge of the CLIP. This tectonic phase was governed by plate instability, affecting NW Peru and SW Ecuador, followed by reestablishment of the margin by early Eocene. The resulting margin configuration and the spatial distribution of the different tectonic elements seem to have played a key role in the further Cenozoic development of the forearc region. The model presented in this study proposes that the accretion of buoyant oceanic terranes may have had a profound impact on the early margin configuration of SW Ecuador and NW Peru and led to the development of localized but genetically related forearc depocenters
Gonzalez-Montilla, Leonardo Enrique. « Analyse structurale et évolution tectonique des Andes vénézuéliennes nord orientales ». Pau, 2004. http://www.theses.fr/2004PAUU3022.
The northeastern part of The Mérida Andes shows a consecution of complex tectonic events. There, they were recorded successively: (1) the Jurassic rifting with formation of NE - SW grabens in which the red sediments of the La Quinta Formation were deposited; (2) the Caribbean orogeny (the last superior Cretaceous at the early Oligocene) with the remobilization of the Lara napes to their current position. This phase is characterized by the presence of orientation N070ʿ to N150ʿE; (3) the Fm. Morán and the Caribbean's units were removed and displaced toward the ESE at the moment of the compression ESE - WNW that could correspond to the phase N105ʿE of Stéphan (1982), previous to the middle Miocene; (4) the Andean phase, NE - SW to NNW - SSE that begins in the Miocene. This last is responsible for the birth of the NE - SW folds that sometimes comes from the reactivation of Jurassic grabens. Close to the right slip subverticales fault, the efforts turns or they change their orientation in anti timetable to arrive to N100ʿE. The relays of the strike-slip fault or their change in direction believe transpression areas (structures in flower) or in transtension (rhomboedric basins); (5) between the El Empedrado and Boconó faults, the present constraint is oriented NNE - SSW, having for consequence to reverse the game of the subverticales accidents (senestrals, then dextrals). The important difference created along the basins in transtension NE - SW transtension of the La Pastora drags a flexure of the covering and the formation of the San Pedro "drapage" folds. To the north of the Boconó fault and the east of the Valera fault, Trujillo's block is cut in several compartments by subverticales left strike-slip faults. Our field observations inside these compartments and in their limit, as well as the taken slip vectors of the focal mechanisms of earthquakes, they confirm that Trujillo's block escapes laterally toward the north or the northeast. To the east of the El Empedrado fault, this movement lateral is counteracting for the presence of the Caribbean napes more to the north
Coutand, Isabelle. « Tectonique cénozoïque du haut plateau de la Puna : Nord-Ouest argentin, Andes centrales / ». Rennes : Géosciences, Université de Rennes I, 1999. http://catalogue.bnf.fr/ark:/12148/cb37096577m.
Barberon, Vanesa. « Evolution tectonique du dépocentre nord du bassin Austral des Andes de Patagonie ». Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCD058/document.
The thesis plan includes the following specific objectives: According to field observations structural geological map will be obtained georeferenced area covering between the lake Buenos Aires and Mayer River in the Southern Andes Patagonian, Santa Cruz province. Provenance analysis were done by petrographic studies in sandstones at five stratigraphic sections representative of the sequences considered belonging to the Lower Cretaceous and Miocene in the northern sector of the Austral basin. Further X-ray diffraction preliminary studies at one profile (called Veranada de Gómez). Also, two lithostratigraphic units were dated and study by detrital zircons provenance. It is expected to determine for the study area, the beginning of the stage foreland, and an estimate is obtained the age of the exhumation of the regions of origin, and thus a semi-quantitative approach at a time the age of onset of uplift, as sediment dispersion models. The comprehensive analysis of these data will give the general pattern of palaeogeographic dispersal and sediments of the northern edge of Southern Basin to mesh with the southern sector pattern, which fed the study area. Moreover fragile deformation will be studied by analyzing faults striaes to characterize the deformation events in the area
Strub, Magalie. « Evolution géomorphologique et tectonique au front des Andes centrales (nord de la Bolivie) ». Phd thesis, Université Paul Sabatier - Toulouse III, 2006. http://tel.archives-ouvertes.fr/tel-00660509.
Coutand, Isabelle. « Tectonique Cénozoïque du Haut Plateau de la Puna, Nord Ouest Argentin, Andes Centrales ». Phd thesis, Université Rennes 1, 1999. http://tel.archives-ouvertes.fr/tel-00620066.
Coutand, Isabelle. « Tectonique cenozoique du haut plateau de la puna, andes centrales, nord ouest argentin ». Rennes 1, 1999. http://www.theses.fr/1999REN10017.
Vega, Maria Mayssa. « Architecture tectonique et stratigraphique du bassin d'avant-arc de Tumbes (Nord Pérou) : implications pour l'exploration des hydrocarbures ». Toulouse 3, 2009. http://thesesups.ups-tlse.fr/875/.
Forearc basins are under explored areas by academic or industrials research. They are not considered as potential area by oil industry because only one giant oil field belongs to this type of basin. Such a oil field is located in the northern Peruvian forearc system: The Talara basin. Our research focuses on the Tumbes forearc basin located north of the oil bearing Talara basin. The aim of this work is to provided for oil industry skills about the tectonic style and the stratigraphic architecture of this basin in order to decipher its petroleum potential using a multisource approach of surface and subsurface data (seismic lines, well-logs). On a tectonic view point, we demonstrate that the basin structure is not a pull-apart one but an accretionary prism built by deep-seated north-verging thrusts reworked by shallow gravitational normal faults. A tectonic model is developed corresponding to the northwestward propagation since Eocene times, of thrust-related culminations bounded by south-east facing normal faults. This tectonic model suggests that anticline traps, which have never been explored, should become a new target for future exploration. Sequence stratigraphy allows us deciphering the stratigraphic architecture of the Tumbes basin. In the Oligocene-Miocene succession, 15 base level cycles have been identified onshore and have been correlated using seismic data to the offshore portion of the basin. The Corvina gas field has been the depositional area of thick turbiditic body (channels and fans) which have been deposited during periods of forced and normal regressions. These good reservoirs rocks are interbedded with thin fines which have been deposited during transgressive periods. Such a stratigraphic architecture suggests a alternation of good to fair reservoir topped by transgressive seals, which may increase significantly the hydrocarbon resources of the Tumbes forearc basin
Castrillo-Delgado, José Tomas. « Structuration néogène du flanc nord-ouest des Andes vénézueliennes entre Torondoy et Valera ». Pau, 1997. http://www.theses.fr/1997PAUU3007.
Margirier, Audrey. « Tectonique et processus d’exhumation des Cordillères Blanche et Noire en contexte de subduction horizontale (Nord Pérou) ». Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAU023/document.
My thesis focuses on the mechanisms that controlled the uplift and construction of the relief in the northern Peruvian Andes. In this area, the Cordillera Blanca forms the highest peaks in Peru (> 6000 m), which is a topographic anomaly across the Andes. The morphology of the Cordillera Blanca is marked by an elongated pluton, which outcrops over 150 km. In addition, this pluton is bordered by the largest normal fault from South America. The presence of this major normal fault in a flat-slab context remains surprising because flat slabs usually induce an increase of the shortening in the overriding plate. The aim of my work is to characterize the variations of the regional stress field, the age of the uplift and discuss the geodynamic processes that contributed to relief building. To address these issues, I used a multidisciplinary approach involving new field data, their analysis and modeling.My microtectonic dataset reveals regional extension above the Peruvian flat-slab. This data contradicts the expected increase of shortening in the overriding plate. Modeling my new thermochronologic data shows an increase in the exhumation rates induced by the uplift of the Cordillera Occidental since 15 Ma. I propose that the regional uplift relates to the flattening of the subduction and associated dynamic topography.To address the impact of the Miocene arc on the uplift at a more local scale, I compiled the cooling ages of the pluton available in the literature. In parallel, I obtained the first amphibole thermo-barometry data that constrains emplacement depth of the Cordillera Blanca batholith. Following these data, I propose that the batholith is structured in eastward-tilted sills. In addition, modeling of the space and time variations of erosion rates based on the inversion of thermochronologic data indicates that erosion rates significantly increased in the Cordillera Blanca since 2 Ma. The Miocene arc seems to insignificantly contribute to the local uplift despite its contribution to the thickening of the lithosphere. Thus, I suggest that the recent glacial erosion contributes to the exhumation of the Cordillera Blanca and subsequent tilting of the batholith.Then, I modeled the landscape evolution for the Cordillera Blanca region to quantify the contribution of erosion in the relief building and the uplift. My numerical models (FastScape) evidence the importance of erosion and associated flexural rebound in fostering relief building and the uplift rates.Finally, based on all available data, I propose a new regional model to explain the Cordillera Blanca normal fault. This model implies an extrado normal fault and erosion of the footwall