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Ditribuição de terras raras e outros elementos incompatíveis no Maciço de Monch...
Simão, J.; Bravo, M. S.; Ribeiro, M. L.When approaching a geochemical project a few problems of methodology have to be considered, among them the exploration grid that as to obey to representativity/rentability criteria. This preliminary study permitted to save near 27% on the sampling comparing with the net initially envisaged. Some criteria considered in the elaboration of the grade variation maps and the distribution of two elements in the area a...
Exemplo de vulcanismo tardio em Portugal- rocha ígnea post-Miocénico inferior (...
Coelho, A. V. Pinto; Bravo, M. S.A small outcrop of an igneous rock (basanite) was observed in 1971 at Figueira-Mexilhoeira Grande-Algarve, enclosed by Miocene limestone and showing clear evidente of low grade thermal effects along the contact with the igneous mass. This is in agreement with F. L. Pereira Sousa who was the first geologist to admit (1917) the existence of Miocene igneous rocks in Algarve although subsequently they were not poss...
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