Loading...
2 results
Search Results
Now showing 1 - 2 of 2
- Portuguese limestones from the Middle Jurassic of the MCE candidate for heritage stone [Resumo]Publication . Lopes, Luis; Carvalho, JorgeABSTRACT: The Monastery of Alcobaça (1152 AD), the Convent of Christ in Tomar (1160 AD) and the Monastery of Batalha (1386 AD), are classified as UNESCO World Heritage Sites, having in common the construction materials that built them - Limestones from the Middle Jurassic of the Estremenho Limestone Massif (MCE). The use of these rocks, first as a structural element and later as an ornamental rock, continues today. In fact, considering the volumes of ornamental rock exploited in Portugal, these rocks have the highest values and are exported annually to more than a hundred countries, playing a decisive role in placing Portugal in the top ten world exporters of ornamental rocks.
- Middle Jurassic dinosaur footprints from the Serras de Aire and Candeeiros [Resumo]Publication . Lopes, Luis; Sá, Artur Abreu; Carvalho, Jorge; Mergulhão, Lia; Cachão, Mário; Galopim de Carvalho, António MarcosABSTRACT: The Dinosaur Footprints Natural Monument of Ourém/Torres Novas, known as Galinha quarry, and the Vale de Meios quarry, are located in the Serras de Aire e Candeeiros Nature Park (Central Portugal). They are two geosites, duly geoconserved, of recognized international scientific value, due to its exceptionality regarding to the age, size, and quality of preservation of ichnites. Both quarries are located in limestones of the Serra de Aire Formation (Bathonian, Middle Jurassic) (Azerêdo 2007). The Galinha quarry preserves 20 trails with sauropod footprints, in an excellent state of conservation, and it is possible to observe finger marks and a ridge formed by the sediment that was removed under the weight of the animal. This deposit has some of the oldest and longest sauropod tracks known in the world (up to 147 m long) and allows to obtain a dynamic image of the locomotion of these sauropods (Santos et al 2009). The Vale de Meios quarry preserves more than 700 theropod tracks. They are organized in at least 80 unidirectional trackways, arranged in a bimodal orientation pattern (W/NW and E/SE). Paleoenvironmental studies in this quarry indicates an inter-tidal flat located at the margin of a coastal barrier (Razzolini et al 2016).