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- Dados de amostragem de Geologia do Pré-QuaternárioPublication . Fernandes, Paulo; Rodrigues, Bruno; Matos, VascoBases de dados de amostras recolhidas entre 2009 e 2011 no âmbito de diversos projetos e teses de doutoramento (http://hdl.handle.net/10400.1/6821; http://hdl.handle.net/10400.1/5748; etc.) do CIMA, Universidade do Algarve. Inclui a localização geográfica, as idades das amostras e as técnicas laboratoriais utilizadas, entre outros dados. A base de dados está construída em Access.
- Silurian to Lower Devonian Palynomorphs from the Barrancos region, Ossa Morena Zone, PortugalPublication . Lopes, Gilda; Pereira, Zélia; Fernandes, Paulo; Piçarra, J. M.; Oliveira, José TomásNew miospore results were obtained from the Palaeozoic stratigraphic succession present in the Barrancos region, Portugal. The studied formations comprise the Silurian carbonaceous shales intercalated with cherts and rare lenticular carbonates of the Xistos com Nódulos Formation, as well as, the dark shales that alternates with thin psammit beds of Late Silurian to Early Devonian age from the Xistos Raiados Formation. Two miospore biozones were identified: the cf. protophanus verrucatus Miospore Biozone, of the Lower Wenlock (Homerian) (Richardson &McGregor, 1986) and the Verrucosisporites polygonalis (Po)Miospore Biozone of the Lower Pragian (Streel et al., 1987). For the first time cryptospores are reported. Rare acritarchs and chitinozoans are also present. This new preliminary data allow correlation with the graptolite biozonation already established in this region (Piçarra, et al., 1995, 1998; Piçarra, 2000) and completes previous palynological studies (Pereira et al., 1999). Even so, detailed palynostratigraphic research is needed and is currently being undertaken to better understand the complex geology of the region.
- Organic Maturation and Source-Rock Potential of the Mesozoic Algarve Basin: southern PortugalPublication . Fernandes, Paulo; Borges, Marisa; Rodrigues, B.; Matos, VascoThe Algarve Basin is an important Mesozoic depocentre in southern Portugal.
- História térmica da bacia carbonífera de Moatize-MinjovaPublication . Fernandes, Paulo; Cogné, N.; Marques, J. M.; Rodrigues, B.; Jorge, R. C. G. S.; Jamal, D.Duas sondagens de prospecção de carvão executadas na Bacia Carbonífera de Moatize-Minjova, foram estudadas usando as técnicas do poder reflector da vitrinite e dos traços de fissão da apatite para avaliar a sua história térmica.
- Reply to "Comment on "Stratigraphy of the Northern Pulo do Lobo Domain, SW Iberia Variscides: A palynological contribution" by Zelia Pereira et al. (2018) - Geobios 51, 491-506"Publication . Pereira, Zelia; Manuel Carvalho Fernandes, Paulo; Matos, Joao X.; Jorge, Raul C. G. S.; Oliveira, Jose T.We acknowledge M. Francisco Pereira, D. Martínez Poyatos, I. Pérez-Cáceres, Cristina Gama and António Azor for the interest shown in our work, and appreciate the chance to clarify a few questions raised by Pereira et al.’s (2018) research. The main aim of Pereira et al. (2018) study was to better constrain the ages of the lithostratigraphic units that make the Northern Pulo do Lobo Domain, SW Iberia Variscides.
- Idades U-Pb de zircões detríticos do Grupo do Flysch do Baixo Alentejo, Zona Sul PortuguesaPublication . Rodrigues, B.; Chew, Dave; Jorge, R. C. G. S.; Fernandes, Paulo; Veiga-Pires, C.; Oliveira, J. T.Foram obtidas idades U-Pb através de ablação a lazer de zircões detríticos das formações do Grupo do Flysch do Baixo Alentejo. As idades obtidas sugerem uma proveniência sedimentar, no caso das formações de Mértola e Mira, com o envolvimento de uma componente detrítica intrabasinal (Zona Sul Portuguesa) e de áreas fontes associadas ao bordo sul da Zona da Ossa Morena. No caso da Formação de Brejeira as idades sugerem um envolvimento de áreas fontes correlacionáveis com o terreno Avalonia/Meguma assim como de sedimentos reciclados oriundos do Domínio Sul Português.
- Reply to Discussion on 'Detrital zircon geochronology of the Carboniferous Baixo Alentejo Flysch Group (South Portugal); constraints on the provenance and geodynamic evolution of the South Portuguese Zone', Journal of the Geological Society, 172, 294-308Publication . Rodrigues, B.; Chew, D. M.; Jorge, R. C. G. S.; Fernandes, Paulo; Veiga-Pires, C.; Oliveira, J. T.We would like to thank Pereira (2015) for his interest in our work and appreciate the opportunity to clarify some aspects of the Rodrigues et al. (2015) study. Here we dispute several fundamental assertions made in the discussion of our original paper. (1) Pereira (2015) states, based on the U–Pb detrital zircon data of Pereira et al. (2012a, 2014), that the turbidites of the Mértola (late Visean) and the Mira (Serpukhovian to early Bashkirian) formations of the Baixo Alentejo Flysch Group of the South Portuguese Zone (Fig. 1b), were ‘mainly derived from a source terrane dominated by zircon populations of Middle–Late Devonian ages (c. 393–359 Ma) that are absent in the Ossa–Morena Zone’ and that this detrital zircon population forms 37.7% of all detrital zircons of these two formations. However, a large population of zircons of Middle–Late Devonian age was not found in the Rodrigues et al. (2015) study. The Mértola Formation (sample FM1; table 1 of Rodrigues et al. 2015) is clearly dominated by one population whose zircon ages range between 388 and 326 Ma, with this group representing 68% of all ages obtained. This population shows a peak at 336 Ma (middle Visean).
- The palynology of the lower and middle Toarcian (Lower Jurassic) in the northern Lusitanian Basin, western PortugalPublication . Correia, Vania F.; Riding, James B.; Fernandes, Paulo; Duarte, Luis V.; Pereira, ZeliaThe lower and middle Toarcian (Lower Jurassic) successions of the northern Lusitanian Basin in western Portugal were examined for palynomorphs. Two localities, the Maria Pares and the Vale das Fontes sections, were sam-pled. The sections span the Dactylioceras polymorphum, Hildaites leyisoni and Hildoceras bifrons ammonite biozones. The samples produced relatively low diversity dinoflagellate cyst floras which are typical of those from coeval European successions; the most abundant species is Luehndea spinosa. The other forms encountered were Mancodinium semitabulatum, Mendicodinium microscabratum, M. spinosum subsp. spinosum, Mendicodinium sp., Nannoceratopsis ambonis, N. gracilis and N. senex. Dinoflagellate cysts typically dominate throughout the Dactylioceras polymorphum ammonite biozone; their abundance significantly decreased in the overlying Hildaites levisoni and Hildoceras bifrons ammonite biozones. The low diversity Luehndea-Nannoceratopsis dinoflagellate cyst flora of the northern Lusitanian Basin is characteristic of the Sub-Boreal region of Europe. This is a transitional region, intercalated between the Boreal and Tethyan realms. The Toarcian Oceanic Anoxic Event (T-OAE) in the northern Lusitanian Basin is characterised by a sudden decline in palynomorph abundance and diversity, including the virtual absence of acritarchs and dinoflagellate cysts. Following the T-OAE, Mancodinium semitabulatum and Mendicodinium spp. were the only dinoflagellate cysts recorded. This 'blackout' of dinoflagellate cysts during the T-OAE, and their partial recovery following the event, shows that dinoflagellate populations were responding to a major palaeoenvironmental change. (C) 2016 Elsevier B.V. All rights reserved.
- A late Fammenian age storm-dominated succession at Berrocal (Iberian Pyrite Belt - Spain)Publication . Fernandes, Paulo; Pereira, Zélia; Oliveira, José Tomás; Jorge, R. C. G. S.; Relvas, J.The Berrocal area is situated in the northern limb of Valverde del Camino anticlinal in the Spanish sector the Iberian Belt and exposes the upper part of the Phyllite-Quartzite Group. Recent studies on palynostratigraphy and sedimentology of the Berocal section indicates that the stratigraphic succession is late Famennian age (VH miospore biozone) and was accumulated on the offshore zone of a siliciclastic shelf dominated by storm events.
- Caracterização geoquímica do Grupo do Flysch do Baixo Alentejo (Zona Sul Portuguesa): resultados preliminaresPublication . Fernandes, Paulo; Jorge, R. C. G. S.; Pereira, Zélia; Oliveira, José TomásO Grupo do Flysch do Baixo Alentejo (GFBA) é um dos domínios da Zona Sul Portuguesa (ZSP), sendo constituído por sedimentos turbidíticos profundos, com uma espessura superior a 5 km (Oliveira, 1990).