A ocorrência de fósseis de trilobites em Portugal é conhecida desde há mais de 150 anos, mas permanecia por comprovar a presença deste grupo nas litologias do Silúrico. Reporta-se agora o primeiro registo de trilobites no Silúrico de Portugal, numa sucessão de intercalações de argilitos e calcários da Formação Campanhó do Sinclinal de Moncorvo. As trilobites são raras, estando a associação amplamente dominada p...
The Variscan Cycle is well represented from Central-Eastern Europe to North America. In the Iberian Massif crops out one of the best-exposed cross-sections revealing the full anatomy of the Variscan Orogeny. This includes the hinterland domains of the Variscan belt, composed of several zones with distinct stratigraphic, tectono-metamorphic, and magmatic features, in addition to the external domains that encompa...
RESUMO: A ocorrência de fósseis de trilobites em Portugal é conhecida desde há mais de 150 anos, mas permanecia por comprovar a presença deste grupo nas litologias do Silúrico. Reporta-se agora o primeiro registo de trilobites no Silúrico de Portugal, numa sucessão de intercalações de argilitos e calcários da Formação Campanhó do Sinclinal de Moncorvo. As trilobites são raras, estando a associação amplamente do...
The first biostratigraphical study on the complete Pedreira da Engenharia quarry section (Middle Devonian, SW Portugal) is presented. A total of 32 samples were collected from the three subsections (PE-A, quarry floor; PE-B and PE-C). This led to the identification of 15 species belonging to the genera Icriodus, Polygnathus and Tortodus. Four index species were identified: P. costatus; T. australis; T. kockelia...
Magnetic susceptibility studies (magnetostratigraphy) are a tool for correlating stratigraphic sequences of similar ages, especially for situations where biostratigraphy is not applicable or presents little precision in the range of ages that can be obtained from it. These studies are also used as a tool for the correlation of paleoclimate events on a regional or global scale. In this work, three Silurian seque...
We report the first occurrence of trilobites in the Silurian of Portugal, from a Ludlow-Pridoli sequence of shale and limestone intercalations of the Campanhó Formation, located in Mós, Moncorvo syncline. Rare and fragmentary material allowed the identification of the encrinurid Cromus sp. and a phacopid resembling Denckmannites. The fossil assemblage supports the proposed paleogeographical model for this secto...
A summary of the Portuguese conodont research is presented herein. A total of 18 publications were found to have descriptions or references to Portuguese conodonts, starting with the work of Boogaard (1963). The discoveries were made in calcareous units from the Central Iberian Zone (Buçaco Syncline, Moncorvo Syncline), Ossa-Morena Zone (Cabrela Basin, Odivelas Limestone, Ferrarias Anticline, Ficalho-Moura Anti...
The Devonian sedimentary record of the Ossa-Morena Zone is scarce. In its southwestern domains, the Odivelas Limestone and correlatable units represent the single evidence of latest Early Devonian to Middle Devonia n (possibly into Frasnian) sedimentation in this area. Reefal and perireefa l sediments are frequently, but not always, associated to coeval volcanic rocks that probably supported atoll-like systems ...
As tentaculites s.l. (Tentaculita) são uma classe extinta de animais invertebrados, que existiram entre o Ordovícico Inferior e o Jurássico Médio e cuja afinidade biológica, problemática, se pensa estar relacionada com os moluscos, braquiópodes e foronídeos. O primeiro trabalho a documentar a ocorrência de tentaculites em Portugal é da autoria de Nery Delgado que, em 1908, listou seis espécies, quatro atribuída...
At the southwest domains of the Iberian Massif there is a Variscan suture zone between two tectonostratigraphic terranes: the Iberian Terrane, which include the Ossa-Morena Zone (OMZ); and the South Portuguese Terrane. On the OMZ (located at north), some small-scale limestone outcrops, no bigger than a square kilometer, appear. One of these limestone outcrops was classified as the Pedreira da Engenharia Formati...