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- Estudos geológicos em S. Tomé e PríncipePublication . Caldeira, Rita
- Petrology and geochemistry of lavas from Sal Island : implications for the variability of the Cape Verde magmatismPublication . Torres, P.; Silva, L. Celestino da; Munhá, José; Caldeira, Rita; Mata, João; Tassinari, Colombo C. G.
- A structural study of Cr-spinels from mantle xenoliths of Cameroon, Libya and MoroccoPublication . Lenaz, David; Musco, M.; Caldeira, Rita; De Min, A.; Marzoli, Andrea; Mata, João; Princivalle, Francesco; Youbi, N.
- Geochemical and short-period Rayleigh wave dispersion measurements as evaluation tools to estimate Madeira Island magma depthsPublication . Caldeira, Rita; Matos, Catarina; Rosa, Carlos J. P.; Silveira, Graça; Ribeiro, Maria Luísa; Matias, Luís; Dias, Nuno; Krueger, Frank; Nunes, Joana; Rosa, Diogo
- Mineral chemistry of ultramafic nodeules from lavas of the Fogo Island 2014 Eruption (Cape Verde) : preliminary resultsPublication . Caldeira, Rita; Guimarães, Fernanda; Mata, João; Silva, P.; Moreira, M.; Ferreira, Pedro Tavares
- Geochemical and short-period Rayleigh wave dispersion measurements as evaluation tools to estimate Madeira Island magma chambers depthsPublication . Caldeira, Rita; Matos, Catarina; Rosa, Carlos J. P.; Silveira, Graça; Ribeiro, Maria Luísa; Matias, Luís; Dias, Nuno; Krueger, Frank; Nunes, Joana; Rosa, Diogo
- Geochemical variability of the mantle beneath São Tomé Island, Cameron Volcanic Line [Abstract]Publication . Caldeira, Rita; Munhá, José; Mata, João; Madeira, J.
- Upper crustal structure of Madeira Island revealed from ambient noise tomographyPublication . Matos, Catarina; Silveira, Graça; Matias, Luís; Caldeira, Rita; Ribeiro, Maria Luísa; Dias, Nuno; Krüger, Frank; Bento dos Santos, TelmoWe present the first image of the Madeira upper crustal structure, using ambient seismic noise tomography. 16 months of ambient noise, recorded in a dense network of 26 seismometers deployed across Madeira, allowed reconstructing Rayleigh wave Green's functions between receivers. Dispersion analysis was performed in the short period band from 1.0 to 4.0 s. Group velocity measurements were regionalized to obtain 2D tomographic images, with a lateral resolution of 2.0 km in central Madeira. Afterwards, the dispersion curves, extracted from each cell of the 2D group velocity maps, were inverted as a function of depth to obtain a 3D shear wave velocity model of the upper crust, from the surface to a depth of 2.0 km. The obtained 3D velocity model reveals features throughout the island that correlates well with surface geology and island evolution.
- Selénio retido por minerais das fumarolas vulcânicas na Ilha do Fogo (Cabo Verde)Publication . Silva, Teresa; de Oliveira, Daniel Pipa Soares; Veiga, JP; Ávila, Paula Freire; Candeias, Carla; Salas-Colera, Eduardo; Caldeira, Rita
- Geologia e Geoquímica da ilha de São Tomé e a Linha Vulcânica dos CamarõesPublication . Caldeira, Rita
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