Browsing by Author "Fernandes, Paulo"
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- Assessing Thermal Maturity through a Multi-Proxy Approach: A Case Study from the Permian Faraghan Formation (Zagros Basin, Southwest Iran)Publication . Spina, Amália; Cirilli, Simonetta; Sorci, Andrea; Schito, Andrea; Clayton, Geoff; Corrado, Sveva; Fernandes, Paulo; Galasso, Francesca; Montesi, Giovanni; Pereira, Zélia; Rashidi, Mehrab; Rettori, RobertoABSTRACT: This study focuses on the thermal maturity of Permian deposits from the Zagros Basin, Southwest Iran, employing both optical methods (Thermal Alteration Index, Palynomorph Darkness Index, Vitrinite Reflectance, UV Fluorescence) and geochemical analyses of organic matter (Rock Eval Pyrolysis and MicroRaman spectroscopy) applied to the Faraghan Formation along two investigated Darreh Yas and Kuh e Faraghan surface sections. Furthermore, an integrated palynofacies and lithofacies analysis was carried out in order to integrate the few studies on the depositional environment. The Faraghan Formation, which is widely distributed in the Zagros area, generally consists of shale intercalated with sandstones and pebble conglomerates in the lower part, followed by a succession of sandstone, siltstone and shaly intercalations and with carbonate levels at the top. The integrated palynofacies and lithofacies data confirm a coastal depositional setting evolving upwards to a shallow marine carbonate environment upwards. Rock Eval Pyrolysis and Vitrinite Reflectance analysis showed that the organic matter from samples of the Darreh Yas and Kuh e Faraghan sections fall in the mature to postmature range with respect to the oil to gas generation window, restricting the thermal maturity range proposed by previous authors. Similar results were obtained with MicroRaman spectroscopy and optical analysis such as Thermal Alteration Index and UV Fluorescence. Palynomorph Darkness Index values were compared with Rock Eval Pyrolysis and vitrinite reflectance values and discussed for the first time in the late stage of oil generation.
- Callovian (Middle Jurassic) dinoflagellate cysts from the Algarve Basin, southern PortugalPublication . Borges, Marisa; Riding, James B.; Fernandes, Paulo; Matos, Vasco; Pereira, Zélia
- Caracterização Geoquímica da Formação da Brejeira, Grupo do Flysch do Baixo Alentejo : resultados preliminaresPublication . Fernandes, Paulo; Jorge, Raul CG Santos; Rodrigues, B.; Pereira, Zélia; Oliveira, José Tomás
- Carbon isotope record of the Middle to Late Jurassic, Callovian-Oxfordian, from the Algarve Basin, PortugalPublication . Borges, Marisa; Fernandes, Paulo; Rodrigues, B.; Googhue, R.
- Carboniferous palynostratigraphy of the borehole SDJ1 from the Santa Susana region, Ossa Morena Zone, PortugalPublication . Pereira, Zélia; Lopes, Gilda; Fernandes, Paulo; Matos, João Xavier; Rosa, Diogo; Oliveira, José Tomás
- CIMP Faro'09 : II Joint Meeting of Spores-Pollen and Acritarch Subcommissions. AbstractsPublication . Fernandes, Paulo; Pereira, Zélia; Oliveira, José Tomás; Clayton, G.; Wicander, R.
- CIMP Faro'09 : II Joint Meeting of Spores-Pollen and Acritarch Subcommissions. Palynostratigraphic contributions to the understanding the Southwest Portugal and Algarve Basin Geology, Portugal : Post Meeting Field-Trip, 23-24 September 2009Publication . Oliveira, José Tomás; Fernandes, Paulo; Pereira, Zélia; Borges, Marisa
- Contribuição para o estudo da estrutura da mina de Aljustrel, Faixa Piritosa Ibérica, com base em novos dados palinoestratigráficos do Complexo Vulcano-Sedimentar e da Fm. MértolaPublication . Matos, João Xavier; Pereira, Zélia; Fernandes, Paulo; Rosa, Diogo; Oliveira, José Tomás
- Dados palinoestratigráficos preliminares do Gorstiano, Silúrico, da Formação de Sazes, Sinclinal do Buçaco = Preliminary palynostratigraphic data from the Gorstian, Silurian, Sazes Formation, Buçaco SynclinePublication . Lopes, Gilda; Vaz, Nuno; Sequeira, António J. D.; Piçarra, José Manuel; Fernandes, Paulo; Pereira, ZéliaNovos dados bioestratigráficos foram obtidos na sucessão estratigráfica do Paleozóico Inferior da região do Buçaco. A Formação de Sazes (Silúrico) está a ser estudada ao nível palinológico (miosporos e quitinozoários) e de macrofósseis (graptólitos), com o intuito de rever e complementar dados bioestratigráficos anteriormente descritos. Com base nos dados palinológicos, parte da Fm. de Sazes foi datada com mais precisão como pertencendo ao Gorstiano e, pela primeira vez nesta região, também foram identificados criptosporos. Novos dados são esperados com a continuação deste estudo.
- Delta13Carbonate chemostratigraphy of the Carrapateira Outlier (Lower Kimmeridgian) Southern PortugalPublication . Borges, Marisa; Goodhue, Robbie; Fernandes, Paulo; Pereira, Zélia; Matos, Vasco; Rodrigues, Bruno