Search Results - "Duarte, Luis Vitor"
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Rapid light carbon releases and increased aridity linked to Karoo–Ferrar magmatism during the early Toarcian oceanic anoxic event
Published in Scientific reports (14-03-2022)“…Large-scale release of isotopically light carbon is responsible for the carbon isotope excursion (CIE) of the Toarcian Oceanic Anoxic Event during the Lower…”
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The impact of the Pliensbachian–Toarcian crisis on belemnite assemblages and size distribution
Published in Swiss journal of palaeontology (01-12-2021)“…The second-order Pliensbachian–Toarcian crisis affected major groups of marine organisms. While its impact has been intensively studied for ammonites, the…”
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Carbon isotope evidence for sedimentary discontinuities in the lower Toarcian of the Lusitanian Basin (Portugal): Sea level change at the onset of the Oceanic Anoxic Event
Published in Sedimentary geology (15-04-2014)“…The Toarcian Oceanic Anoxic Event (T-OAE), Early Jurassic, was an episode of rapid warming and deep perturbation of the carbon cycle, as suggested by the large…”
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Secular environmental precursors to Early Toarcian (Jurassic) extreme climate changes
Published in Earth and planetary science letters (20-02-2010)“…The Early Toarcian Oceanic Anoxic Event (T-OAE), about 183 myr ago, was a global event of environmental and carbon cycle perturbations, which deeply affected…”
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Palynology of the Albian–Turonian sediments from the Sumbe region, Kwanza Basin (Angola): Implications for paleoenvironment, paleoclimate, and paleogeography
Published in Cretaceous research (01-12-2024)“…Palynological investigations in the Sumbe region of the Kwanza Basin, Angola, have identified Albian to Turonian assemblages in four sections of the Quissonde…”
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The distinctive character of lumpy limestones (Early Jurassic, Lusitanian Basin, W Portugal)
Published in Geological journal (Chichester, England) (01-01-2020)“…Ephemeral carbonate facies presenting restricted geographical and temporal occurrence hold the key to complete the knowledge of past environmental conditions…”
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Statistical evaluation of elemental concentrations in shallow-marine deposits (Cretaceous, Lusitanian Basin)
Published in Marine and petroleum geology (01-09-2017)“…The elemental geochemistry of ancient shallow-marine carbonates represents an often underexplored archive of paleoenvironmental change and diagenetic pathways…”
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Changes in foraminiferal assemblages and environmental conditions during the T-OAE (Early Jurassic) in the northern Lusitanian Basin, Portugal
Published in Palaeogeography, palaeoclimatology, palaeoecology (15-04-2019)“…The foraminiferal assemblages and other microfossils from the Rabaçal area (Maria Pares section) in the Lusitanian Basin (Portugal) provide new insights…”
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Geoheritage of the Iconic EN280 Leba Road (Huila Plateau, Southwestern Angola): Inventory, Geological Characterization and Quantitative Assessment for Outdoor Educational Activities
Published in Land (Basel) (01-08-2024)“…The EN280 Leba Road is a mountain road that runs along the western slope of Serra da Leba (Humpata Plateau) and its outstanding escarpments, connecting the…”
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Opportunistic behaviour after the Toarcian Oceanic Anoxic Event: The trace fossil Halimedides
Published in Palaeogeography, palaeoclimatology, palaeoecology (15-04-2019)“…We present an analysis of the first well-documented record of the trace fossil Halimedides in Lower Jurassic (Toarcian) sediments, from the West Iberian…”
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3D numerical modelling of marine organic matter distribution: example of the early Jurassic sequences of the Lusitanian Basin (Portugal)
Published in Basin research (01-02-2018)“…Due to the multiple controlling factors involved, it is a challenging task to identify and quantify the processes influencing the distribution and…”
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A calcareous nannofossil and organic geochemical study of marine palaeoenvironmental changes across the Sinemurian/Pliensbachian (early Jurassic, ~191Ma) in Portugal
Published in Palaeogeography, palaeoclimatology, palaeoecology (01-05-2016)“…The Sinemurian/Pliensbachian boundary (~191Ma) is acknowledged as one of the most important steps in the radiation of planktonic organisms, especially primary…”
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New data on the palynology of the Triassic–Jurassic boundary of the Silves Group, Lusitanian Basin, Portugal
Published in Review of palaeobotany and palynology (01-07-2021)“…New evidence is presented on the Triassic–Jurassic boundary in the northern Lusitanian Basin, Portugal, based on miospore assemblages from a composite Upper…”
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Palynology and palynofacies studies in the lowermost Jurassic of the Lusitanian Basin (Pereiros Formation of the Silves Group), Portugal: evidence of the first transgressive episode
Published in Acta Palaeobotanica (2023)“…The Silves Group of the Lusitanian Basin in Portugal represents the initial infill of the continental rifting basins that formed during the breakup of northern…”
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TOARCIAN NANNOBIOHORIZONS FROM LUSITANIAN BASIN (PORTUGAL)AND THEIR CALIBRATION AGAINST AMMONITE ZONES
Published in Rivista italiana di paleontologia e stratigrafia (01-11-2006)“…The calcareous nannofossil content of the Toarcian succession, widespread in the Lusitanian Basin (Central Portugal), has been studied on the basis of a…”
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Organic-Rich facies in the Sinemurian and Pliensbachian of the Lusitanian Basin, Portugal: Total organic carbon distribution and relation to transgressive-regressive facies cycles
Published in Geologica acta (2010)“…The upper Sinemurian to Pliensbachian series of the Lusitanian Basin (Portugal) correspond to marly limestone sediments rich in benthic and nektonic…”
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Shallow-water carbonates of the Coimbra Formation, Lusitanian Basin (Portugal): contributions to the integrated stratigraphic analysis of the Sinemurian sedimentary successions in the western Iberian Margin
Published in Comptes rendus. Geoscience (13-01-2023)“…An integrated stratigraphic analysis of the Coimbra Formation was performed in the S. Pedro de Moel outcrops of the Lusitanian Basin (Portugal). This unit is…”
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