3 documents found, page 1 of 1
The use of multivariate statistical analysis of geochemical data for assessing ...
Candeias, C.; Silva, E. Ferreira da; Salgueiro, A. R.; Pereira, H. G.; Reis, A. P.; Patinha, C.; Matos, J. X.; Ávila, P. H.Aljustrel mine is located in SW Portugal, in the western sector of the Iberian Pyrite Belt. The Aljustrel village was developed around the exploitations of massive polymetallic sulphides that occur in the area (4 orebodies mined, 2 in exploration phase). The pyrite ore was extensively exploited from 1850 to 1993, when production was discontinued. A mining restart occurred in 2008, only during a few months. The ...
Muography for Underground Geological Surveys: Ongoing Application at the Lousal...
Teixeira, P.; Afonso, L.; Andringa, S.; Assis, P.; Bezzeghoud, M.; Blanco, A.; Borges, J. F.; Caldeira, B.; Cazon, L.; Dobrilla, P.; Lopes, L.The use of muons for geophysical surveys has been proved successful in numerous projects around the planet. The use of muography in an underground environment has an easy side, when compared to the surface, due to the absence of the background radiation. On the other hand, the muon flux is much lower than what is measured on the surface. Geological and underground conditions should be considered when defining t...
Estudo palinostratigráfico do setor Malhadinha, região NE Alvares, concelho de ...
Faria, Ricardo; Pereira, Z.; Matos, J. X.; Rosa, C.; Alves, M. I. Caetano; Oliveira, J. T.Cartografia geológica realizada pelo Laboratório Nacional de Energia e Geologia (LNEG) acompanhada por estudos palinostratigráficos na região de Malhadinha, NE de Alvares, localizada no setor WNW da Faixa Piritosa Ibérica (FPI), concelho de Mértola, possibilitaram o conhecimento de detalhe da estratigrafia local. Apresentam-se as idades obtidas por palinologia para as formações Barranco do Homem e Filito-Quartz...