A5055689498- Geological and Geochemical Analysis
- earthquake and tectonic studies
- High-pressure geophysics and materials
- Geochemistry and Geologic Mapping
- Geological Studies and Exploration
- Geology and Paleoclimatology Research
- Polar Research and Ecology
- Geological and Tectonic Studies in Latin America
- Geophysics and Gravity Measurements
- Seismic Imaging and Inversion Techniques
- Geological and Geophysical Studies
- Hydrocarbon exploration and reservoir analysis
- Pleistocene-Era Hominins and Archaeology
- Earthquake Detection and Analysis
Ifremer
2019-2021
Institut Universitaire Européen de la Mer
2020-2021
Université de Bretagne Occidentale
2020-2021
Geo-Ocean
2020
Universidade Federal do Rio Grande do Norte
2019
Laboratoire Magmas et Volcans
2014-2018
Faculdades Guarulhos
2017
Université Claude Bernard Lyon 1
2016
Institut de Recherche pour le Développement
2016
Centre National de la Recherche Scientifique
2016
Abstract The Quito Fault System (QFS) extends over 60 km along the Interandean Depression in northern Ecuador. Multidisciplinary studies support an interpretation which two major contemporaneous fault systems affect Quaternary volcanoclastic deposits. Hanging paleovalleys and disruption of drainage networks attest to ongoing crustal deformation uplift this region, further confirmed by 15 years GPS measurements seismicity. resulting new kinematic model emphasizes role N‐S segmented, en...
come from teaching and research institutions in France or abroad, public private centers.L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques niveau recherche, publiés ou non, émanant des établissements d'enseignement recherche français étrangers, laboratoires publics privés.
Abstract. The depth-dependent anisotropic structure of the lithosphere under Borborema Province in northeast Brazil has been investigated via harmonic stripping receiver functions developed at 39 stations region. This method retrieves first (k=1) and second (k=2) degree harmonics a function dataset, which characterize seismic anisotropy beneath station. Anisotropic fabrics are turn directly related to deformation from past current tectonic processes. Our results reveal presence within crust...
Summary This study investigates the seismic structure and anisotropy in crust beneath Madagascar southeastern Africa, using receiver functions. The understanding of is essential for imaging past present deformation lithosphere–asthenosphere system. In upper mantle, mainly results from orientation olivine, which deforms under tectonic (fossil anisotropy) or flow processes (in asthenosphere). crust, crystallographic alignment amphiboles, feldspars (plagioclase) micas heterogeneities such as...
Abstract We investigate effects of realistic Earth's lithospheric structures on measurements SKS seismic waves birefringence, which could be perturbed by different factors. present recorded in four tectonic settings. For each case, a structure is assumed and synthetic splitting are compared with the field observations. Our results show that (a) simple where anisotropy aligned both mantle asthenosphere, can safely interpreted as dominantly related to asthenospheric flow; (b) case multilayer...
Abstract. The depth-dependent anisotropic structure of the lithosphere under Borborema Province northeast Brazil has been investigated through harmonic stripping receiver functions developed at 39 stations in region. This method retrieves first (k = 1) and second 2) degree harmonics a function dataset, which characterize seismic anisotropy beneath station. Anisotropic fabrics are turn directly related to deformation from past current tectonic processes. Our results reveal presence within...
We aim at improving our understanding of the current anisotropic fabrics under northeast Brazil, which may include deformation lithosphere from past tectonic processes and on-going mantle flow asthenospheric levels. performed receiver function analysis 75 seismic stations in Borborema Province retrieved orientation depth main crust lithosphere. Our results complement a previous SKS-splitting study region, revealed lack splitting continental interior. observe presence an layer between 30 60...
We greatly thank Fernando Ornelas Marques for such detailled references about inversion and uplift in South American continent NE Brazil