Browsing by Issue Date, starting with "2012-09"
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- Improving the knowledge on seismogenic sources in Lower Tagus Valley for seismic hazard purposesPublication . Carvalho, João; Pinto, Carlos C.; Costa, M.; Duarte, H.; Terrinha, Pedro; Rabeh, Taha; Borges, José Fernando; Dias, Ruben Pereira; Caldeira, Bento
- New approach on the gravity data of the Lagoa Salgada structure, Iberian Pyrite Belt, PortugalPublication . Represas, Patricia; Matos, João Xavier
- InterRidge : Steering Committee Meeting Report 2012, St. Petersburg, Russia, 2-3 June 2012Publication . Chen, John; Cherkashov, Georgy; Escartin, Javier; Fujikura, Kats; Hobbs, Richard; Jin, Xianglong; Juniper, Kim; Kumagai, Hide; Li, Jiabiao; Milton, Debbie; Murton, Bramley; Petersen, Sven; Santos, Ricardo; Silantyev, Sergei; Sunamura, Michinari; Tawake, Akuila; Ferreira, Pedro Tavares
- Characterization of Lower Cretaceous aquifer in Lisbon region for geothermal potential assessmentPublication . Marrero Diaz, Rayco; Costa, Augusto Marques da; Ribeiro, Maria Luísa; Ramalho, Elsa; Rosa, Carlos J. P.
- Geological heritage and landscape valorization in mining regions - the Atlanterra Atlantic Area best examplesPublication . Matos, João Xavier; Ferrero, Angel; Gatley, Sarah; Pereira, Zélia; Préteseille, Sophie; Sánchez, Alejandro; Marchán, Carmen; Díaz-Martínez, Enrique; Hughes, Stephen; Olding, Frank; Tippings, Alyson; Cayla, Philippe; Morris, John H.
- Geochemistry of stream sediments southwards of the SW Variscan suture in Portugal (Guadiana and Chança river basins) : insights into element anomalies of variable origin and intensityPublication . Luz, Filipa; Mateus, António; Matos, João Xavier; Gonçalves, M. A.Stream sediment samples were collected in the Trindade–Chança region at 1034 sites for mineral exploration purposes during 1996–97. Concentrations of Cu, Zn, Pb, Co, Cr and Ni are high enough in most sample sites to allow data assessment by multi-element anomaly definition and threshold computation using the area concentration multifractal model technique. The regional threshold values are 20, 45, 30 and 15 ppm for Cu, Zn, Pb and Co respectively. Anomalies for Cu, Zn, Pb, Co, Cr and Ni are delimited by first order local threshold values at 40, 94, 70, 21, 37 and 42 ppm. The main anomalies are clustered to the east-southeast of the surveyed region and reflect mixed contributions from a variety of sources, namely different volcanic units with local contributions from pelite rocks, contamination from old (abandoned) mining activities and hydrothermal mineralisation controlled by different fault zones.
- Um projeto oitocentista de captação de águas subterrâneas : o abastecimento à cidade da Figueira da Foz (Portugal)Publication . Brandão, José Manuel Moraes Vale; Callapez, Pedro M.
- Transition metals responsible for striking colour variation in tourmalines : an EMP study of tourmalines from granites and quartz-tourmaline rocks associated to the Penamacor-Monsanto pluton (Eastern Central Portugal)Publication . Costa, Isabel Ribeiro da; Antunes, I. Margarida H. Ribeiro; Guimarães, Fernanda; Rodrigues, P. C. R.; Barriga, Fernando; Mourão, C.; Ramos, João Farinha; Hernandez, Récio
- NW-Atlantic temporal distribution of cold-water corals : a first case study from Cape Lookout area, North CarolinaPublication . Matos, Lelia; Mienis, Furu; Frank, Norbert; Thil, François; Wienberg, Claudia; Abrantes, Fátima; Cunha, M. R.; Hebbeln, Dierk
- The LNEG Atlanterra South Portuguese Zone Geosite Characterization ProgramPublication . Matos, João Xavier; Pereira, Zélia