Characterization and quantification of the extensional deformation along deep water magma-poor rifted margins,the examples of the Iberia-Newfoundland and South Atlantic rifled margins

Les découvertes réalisées dans les marges passives peu magmatiques profondes ont montré la nature complexe de ces dernières. Cependant les processus permettant l'accommodation de l'extension lithosphérique qui les affecte et étant à l'origine de leur architecture particulière, sont encore incompris. Les résultats de ce travail ont montré l'importance de la caractérisation des marges passives peu magmatiques et plus particulièrement de la déformation extensive qui les affecte, par un certain nombre d'éléments fondamentaux. L'identification systématique de ces éléments par des méthodes d'observation directe (imagerie sismique) ou indirecte (méthodes potentielles), a permis de définir quatre grands domaines et trois limites majeures. Le concept nouveau développé au cours de cette thèse a été de décrire ces domaines et limites à travers l'évolution spatio-temporelle des marges et d'avoir pu caractériser et quantifier la déformation associée à ces domaines. Cette approche a permis de proposer une inversion cinématique des marges Ibérie-Terre Neuve à l'échelle du rift et de tester ce nouveau concept le long des marges brésilienne et ouest-africaine. Cette étude montre le rôle crucial du niveau découplant intra-crustal contrôlant la déformation extensive. L'interaction des horizons cassants et ductiles de la croûte continentale au cours du rifting est un processus complexe, à considérer en trois dimensions et contrôlé par l'héritage structural, thermique et compositionnel. La compréhension et la prédiction de l'évolution des marges passives restent dépendantes de la compréhension spatiale et temporelle des interactions complexes entre l'héritage et les processus de riftingThe numerous discoveries realized in deep water, magma-poor rifted margins demonstrated the complex nature of these margins. However the processes enabling to accommodate the lithospheric extension and controlling the structural architecture are yet poorly understood. The aim of this thesis was to characterize the extensional deformation in time and space along magma-poor rifted margins. The results of this thesis highlight the importance to characterize the architecture of magma-poor rifted margins and the underlying extensional deformation by defining the building blocks of these margins. The systematic identification of these blocks either by direct observations (seismic images) or by indirect methods (potential methods) allowed four domains and three major limits to be defined. The major new concept developed in this study was to describe these domains and limits as part of the temporal and spatial evolution of the margins and to be able to characterize and quantify the deformation associated with these domains. This approach enabled us to propose a kinematic inversion of the Iberia-Newfoundland rift system and to test this new concept along the Brazilian and West-African rifted margins. Of major importance in the study of rifted margins is the role and evolution of intra-crustal decoupling horizons that control the extensional deformation. The interaction between brittle and ductile layers during rifting is complex, highly 3D and controlled by the structural, thermal, and compositional inheritance. Unraveling the complex interactions between inheritance and rifting processes in time and space appears essential to understand and predict the evolution of rifted margins

Characterization and quantification of the extensional deformation along deep water magma-poor rifted margins,the examples of the Iberia-Newfoundland and South Atlantic rifled margins

Les découvertes réalisées dans les marges passives peu magmatiques profondes ont montré la nature complexe de ces dernières. Cependant les processus permettant l'accommodation de l'extension lithosphérique qui les affecte et étant à l'origine de leur archThe numerous discoveries realized in deep water, magma-poor rifted margins demonstrated the complex nature of these margins. However the processes enabling to accommodate the lithospheric extension and controlling the structural architecture are yet poor

Caractérisation et quantification de la déformation extensive des marges passives peu magmatiques profondes (Exemples des marges Ibérie-Terre Neuve et Sud-Atlantiques)

Les découvertes réalisées dans les marges passives peu magmatiques profondes ont montré la nature complexe de ces dernières. Cependant les processus permettant l accommodation de l extension lithosphérique qui les affecte et étant à l origine de leur architecture particulière, sont encore incompris. Les résultats de ce travail ont montré l importance de la caractérisation des marges passives peu magmatiques et plus particulièrement de la déformation extensive qui les affecte, par un certain nombre d éléments fondamentaux. L identification systématique de ces éléments par des méthodes d observation directe (imagerie sismique) ou indirecte (méthodes potentielles), a permis de définir quatre grands domaines et trois limites majeures. Le concept nouveau développé au cours de cette thèse a été de décrire ces domaines et limites à travers l évolution spatio-temporelle des marges et d avoir pu caractériser et quantifier la déformation associée à ces domaines. Cette approche a permis de proposer une inversion cinématique des marges Ibérie-Terre Neuve à l échelle du rift et de tester ce nouveau concept le long des marges brésilienne et ouest-africaine. Cette étude montre le rôle crucial du niveau découplant intra-crustal contrôlant la déformation extensive. L interaction des horizons cassants et ductiles de la croûte continentale au cours du rifting est un processus complexe, à considérer en trois dimensions et contrôlé par l héritage structural, thermique et compositionnel. La compréhension et la prédiction de l évolution des marges passives restent dépendantes de la compréhension spatiale et temporelle des interactions complexes entre l héritage et les processus de riftingThe numerous discoveries realized in deep water, magma-poor rifted margins demonstrated the complex nature of these margins. However the processes enabling to accommodate the lithospheric extension and controlling the structural architecture are yet poorly understood. The aim of this thesis was to characterize the extensional deformation in time and space along magma-poor rifted margins. The results of this thesis highlight the importance to characterize the architecture of magma-poor rifted margins and the underlying extensional deformation by defining the building blocks of these margins. The systematic identification of these blocks either by direct observations (seismic images) or by indirect methods (potential methods) allowed four domains and three major limits to be defined. The major new concept developed in this study was to describe these domains and limits as part of the temporal and spatial evolution of the margins and to be able to characterize and quantify the deformation associated with these domains. This approach enabled us to propose a kinematic inversion of the Iberia-Newfoundland rift system and to test this new concept along the Brazilian and West-African rifted margins. Of major importance in the study of rifted margins is the role and evolution of intra-crustal decoupling horizons that control the extensional deformation. The interaction between brittle and ductile layers during rifting is complex, highly 3D and controlled by the structural, thermal, and compositional inheritance. Unraveling the complex interactions between inheritance and rifting processes in time and space appears essential to understand and predict the evolution of rifted margins.STRASBOURG-Géologie (674822251) / SudocSudocFranceF

Unravelling the along-strike variability of the Angola–Gabon rifted margin: a mapping approach

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NewSpringForMe, a digital solution to meet transplanted patients’ expectations in terms of support

VirtuelInternational audienceBackground: Each year in Europe, nearly 24,000 patients, adults and children of all ages, are transplanted, the last resort to treat and potentially cure serious blood diseases. While this intervention is saving more and more lives, it can lead to early or late complications in 50% of patients, very disabling in every day life and fatal in 25% of cases. Therefore, the chances of a successful transplant for these patients correlate directly with the non-occurrence of these complications.Recently, research in the field of transplantation and in particular psycho-neuro-immunology has highlighted the mutual influence of psychological and physical health on the chances of successful transplantation. Indeed, the simultaneous management of the mind and body of the patient would ensure better preparation for the transplant process for faster recovery after it by limiting the occurrence of complications. The establishment of an overall well-being throughout the transplant process, based on three inseparable pillars - nutritional, physical and psychological -, would contribute to very significantly increase the success of the transplant and the chances of recovery of the patient.Methods: Currently, there is limited comprehensive support program in the field of transplantation, based on clinical data and patient quality of life that can help them overcome the difficulties of preparing for transplant, the period of hospitalization in a protected environment as well as those related to the return to social and professional life.To answer patients’needs in terms of health support and quality of life improvement, the HTC Project has initiated the development of the digital solution NewSpringForMe. This tool intend to bring complementary therapeutic support for care, reinforcing it, and making each patient the main player in their quality of life.Results: The innovation of NewSpringForMe lies in the simultaneous management of transplanted patients in three dimensions: psychology, nutrition and physical activity. Designed around interconnected spaces, NewSpringForMe deploys recommendations, interactive tools and exercises adapted to respond to 1) each patient and their specific situation, 2) the different phases of their transplant protocol. NewSpringForMe aims at a better preparation and a more global care of the patient, condition of the best live towards its remission. A clinical study, in collaboration with the St Louis Hospital (AP-HP), is scheduled at the early 2022 in order to measure the impact of NewSpringForMe use on the psychological (ex. affect levels), nutritional (ex. level and quality of appetite) and physical (ex. effort and suppleness) parameters of almost 170 patients during one year. This study would also evaluate the impact on the post-transplant complications onset and the post-transplant recovery. The clinical study will be performed in accordance with the regulatory prerequisites.Conclusions: The data collected during the clinical protocol directly from the patients’experience will help in NewSpringForMe evaluation as a global support. A positive impact should be expected on patients daily quality of life, on the appearance of the post-transplant complications and the number of treatments. If this pilot phase is a success, NewSpringForMe could be proposed to the all French transplant units in order to lead a large-scale study