A5037597773- Geological formations and processes
- Geology and Paleoclimatology Research
- Geological and Geophysical Studies
- Methane Hydrates and Related Phenomena
- Geography and Environmental Studies
- Paleontology and Stratigraphy of Fossils
- Reservoir Engineering and Simulation Methods
- Coastal and Marine Dynamics
- Fish biology, ecology, and behavior
- Underwater Acoustics Research
- Hydrocarbon exploration and reservoir analysis
- Geological Modeling and Analysis
- Coastal and Marine Management
- Seismic Imaging and Inversion Techniques
- Isotope Analysis in Ecology
- Oceanographic and Atmospheric Processes
- Geophysics and Gravity Measurements
- earthquake and tectonic studies
- Academic Research in Diverse Fields
- Marine and Offshore Engineering Studies
- Geochemistry and Geologic Mapping
- Heavy metals in environment
- Hydraulic Fracturing and Reservoir Analysis
- Aquatic Ecosystems and Phytoplankton Dynamics
- Marine and environmental studies
Universidade Federal Fluminense
2015-2024
Universidade Federal do Rio Grande
2019
Petrobras (Brazil)
2019
Universidade Federal do Pampa
2019
Servicio Geológico Minero Argentino
2009-2018
Universidade Federal de Santa Maria
2016
National Observatory
2016
Brazilian Institute of Geography and Statistics
2014
Sociedade Brasileira de Geofísica
2014
Instituto de Geociencias
2007-2011
Branched glycerol dialkyl tetraethers (brGDGTs) in river fan sediments have been used successfully to reconstruct mean annual air temperature (MAAT) and soil pH of the Congo River drainage basin. However, a previous study Amazon deep-sea reconstructed MAATs were ca. 10 °C colder than actual MAAT In this we investigated apparent offset, by comparing concentrations distributions brGDGTs suspended particulate matter (SPM) those marine SPM surface sediments. The riverine brGDGT input was evident...
Abstract The margin of the Foz do Amazonas Basin saw a shift from predominantly carbonate to siliciclastic sedimentation in early late Miocene. By this time, Amazon shelf had also been incised by canyon that allowed direct influx sediment basin floor, thus confirming palaeo‐Amazon fan already initiated time (9.5–8.3 Ma). Above interval, during prolonged lowstand, Messinian third‐order sequences are preserved only incised‐valley fills with no equivalent strata on shelf. Third‐ and...
The Amazon River culminates in one a deep-sea fan up to 10 km thick, dynamic setting which the rapid deposition of organic-rich sediment drives linked processes methanogenesis, fluid migration and venting, gas hydrate formation, large-scale slope instability. Growth over last 8 Ma has been accompanied by its gravitational collapse on shale detachments form extensional compressional belts across shelf upper (96%) are
Guanabara Bay bottom sediments and seabed characteristics were analysed using high-resolution (7 kHz) sub-bottom profiles associated with particle size analyses of 92 sediment samples. Eight types echo-characters identified revealing the strong relation distribution. Sandy areas presented echo reflections, without penetration (Echo I III), while in muddy reflections showed acoustic basement delineating buried sugar-loaf hills infilled-valley features type IV). The presence shallow gas within...
Abstract: Gravity tectonics affects the entire marine sedimentary sequence of Foz do Amazonas basin, including topmost Amazon Fan. During various stages margin's evolution, loading and bathymetric slope induced formation a linked extensional–compressional system in which gravitational fold-and-thrust belts form significant structural features on continental slope. Seismic analysis carried out this study shows that sea-floor relief created along these thrust can trigger recurrent...
Seismic analysis of sparker lines GEOMAR cruises allowed us to address a first stratigraphic scenario for the shallow sedimentary record (~300 msec) continental shelf off Rio de Janeiro State, northern Santos basin. Two sets seismic sequences were identified and interpreted as succession depositional induced by repeated glacioeustatic cycles. Depositional composing Set I (SqA-SqC) are dominantly sigmoidal, reflecting periods increasing accommodation space that favoured preservation both...
Deep-sea fans have been proposed to act as carbon sinks, rapid deposition driving shallow methanogenesis favor net storage within the gas hydrate stability zone (GHSZ). Here, we present new evidence of widespread venting from GHSZ on upper Amazon deep-sea fan, together with analyses first samples hydrates recovered offshore NE Brazil. Multibeam water column and seafloor imagery over an 18,000-km2 area fan reveal 53 plumes, rising features in depths 650–2600 m. Most vents (60%) are located...
Historians claim that European colonizers of the northern coast Rio de Janeiro State found vast herbaceous fields when arrived in this region. Hypotheses about origin these include forest burning by Goitacás indians and periodical floods Paraíba do Sul River lagoon system. The palynologycal analysis two lake cores obtained municipality Campos dos Goytacazes revealed opening episodes hygrophilous establishment field vegetation, recorded at ca. 6,500 4,000 14C yr BP. partial replacement...
A analise de dados reflexao sismica monocanal Boomer adquiridos na plataforma continental interna-media (ate ~60 m pro- fundidade) ao largo da Baia Sepetiba, Rio Janeiro, Brasil, revelou a ocorrencia uma sucessao sedimentar preservada 15 – 25 espes- sura, sismicamente interpretada como representando ambientes fluvio-es- tuarinos passando para marinhos rasos. preservacao unidades corte e preenchimento canais estuarinos, provavel idade Pleistoceno Tardio -Holoceno ~30 km costa), evidencia,...
A morfologia das praias é reflexo da ação hidrodinfunica com o tipo de sedimento disponível. Esta int~ação se dá a partir base ondas, tornando-se mais efetiva na zona arrebentação onde energia dissipada, originando wna surfe que estende em direção à linha costa até Q limite do espraiamento face praia. O objetivo deste trabalho apresentar as características morfodinâmicas litoral NE Estado Rio Janeiro, baseando-se análise variação espaço Hemporal perfis praia, plataforma continental e fotos...
This article presents a review of procedures and techniques describing the importance considering stratification within evaporitic section, combining seismic attributes well information during processes migration, in order to build images closer geological realities. A new nomenclature is proposed, reflecting interval velocity density behavior different salt strata. The study also reviews parameters for geomechanical simulations reservoir seals, allowing better decisions terms production...
Abstract. This article presents the scientific rationale for an ambitious ICDP drilling project to continuously sample Late Cretaceous modern sediment in four different sedimentary basins that transect equatorial Amazon of Brazil, from Andean foreland Atlantic Ocean. The goals this are document evolution plant biodiversity forests and relate biotic diversification changes physical environment, including climate, tectonism, surface landscape. These require long records each major across heart...