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Ammonite-benthic Foraminifera turnovers across the Lower-Middle Jurassic transi...

This paper describes and characterises the co-occurrence of ammonite and benthic foraminiferal assemblages across the São Gião outcrop (Central Portugal), a reference section for the Lower-Middle Jurassic boundary in the Lusitanian Basin. The upper Toarcian-lower Aalenian marls and marly-limestones in this section provide a precise and detailed ammonite-based biostratigraphic zonation, with a mixed assemblage o...

O património geológico do Cabo Mondego (Portugal) : avaliação da vulnerabilidad...

Geosite assessment and management proposals of Cape Mondego Natural Monument (W...

The remarkable geodiversity of the Jurassic outcrops justifies the implementation of strategies in order to conserve and promote the geosites of Cape Mondego. This protected area was created aiming the promotion of the geological heritage conservation, scientific research and environmental education. The Cape Mondego Natural Monument is well-known worldwide due to its international stratigraphical relevance giv...

Geoconservation as an emerging geoscience

The main purpose of geoconservation is theconservation of geosites as basic units of the geological heritage through the implementation of specific inventory,evaluation, conservation, valuation and monitoring proce-dures. In this paper, geoconservation is characterised as anemergent geoscience within the Earth and Space Sciences where its scope and methods, as well as production andvalidation of knowledge can b...

The International Year of Planet Earth in Portugal : past activities and furthe...

The Portuguese National Committee for the IYPE was created in the framework of the Portuguese National Commission for UNESCO, in April 2007. The Committee incorporated the contributions of 220 private and public organizations, mainly municipalities and educational institutions of all levels, and sponsored more than 500 activities since then. The Scientific Programme emphasized relevant cooperation between Earth...

The national inventory of geosites in Portugal

During the last three years geoscientists of various institutions have developed a project aiming the setup of a geoconservation strategy in Portugal (Brilha, 2009). One of the main goals of the project was the establishment of an inventory of the most important Portuguese geosites, under the scientific point of view. In a near future, national authorities will consider this inventory as a technical support for...

Foraminifera from the Aalenian and the Bajocian GSSP (Middle Jurassic) of Murti...

The detailed study of benthic foraminifera in 28 samples from Late Toarcian-Aalenian-Early Bajocian hemipelagic sediments of the Murtinheira section (Cabo Mondego, Lusitanian Basin, West Portugal), has permitted the recognition of the assemblage composition and the analysis of their evolution throughout this time interval. The representatives of the Suborder Lagenina dominate all the assemblages and, in the maj...

Definition of the Portuguese frameworks with international relevance as an inpu...

This work constitutes the first contribution for the systematisation of the geological heritage knowledge in Portugal, following the international recomendations for the characterisation of geological heritage (IUGS, ProGEO). The application of the ProGEO methodology has resulted on the creation of fourteen frameworks with international relevance, established by consensus among the Portuguese geological communi...

The North-Lusitanian Subbasin (Portugal) from the Triassic to the Middle Jurass...

The North-Lusitanian Subbasin has sustained a complex evolution whichcart be divided into five main stages: 1. Liassic Distension leading to the differentiation of the Arunca-Montemor lineament; 2. Lower Liassic Rifting with development of endemic ammonites-faunas (Upper Sinemurian); 3. Differential Subsidence (Middle Liassic to Lower Aalenian): eustatic changes were complicated by a strong acceleration of the ...