8 documents found, page 1 of 1
Anisotropia de Suscetibilidade Magnética do pórfiro granítico de Loivos (Vila P...
H. C. B. Martins; Sant'Ovaia, H; Oliveira, J.
Whole-rock geochemistry of the Vila Pouca de Aguiar granitic porphyries (northe...
H. C. B. Martins; Sant'Ovaia, H; Oliveira, J.
Geostatistical approach in the study of the Magnetic Susceptibility variation: ...
Cláudia Cruz; Joaquim Góis; Sant'Ovaia, H; Fernando Moronha
Characterization of Soils from North and Central Portugal for Forensic Purposes.
Sant'Ovaia, H; J. Gomes; I. Moreira; A. Pacheco; Helena Ribeiro; A. Assis; Guedes, A
Oxidized and reduced Portuguese Variscan granites associated with W and Sn hydr...
Sant'Ovaia, H; Martins, H; Noronha, FThe central-northern region of Portugal mainland comprises an important W-Sn metallogenic province composed of various W, W-Sn, W-Mo and Sn hydrothermal lode deposits spatially related to Variscan granites. These granites are usually categorised into two main groups: the two-mica granites and biotite-bearing granites. As the granite series reflect redox states of their corresponding melts, the magnetite- and il...
Jazigos Filonianos Hidrotermais e Aplitopegmatíticos Espacialmente Associados a...
Noronha, Fernando; Ribeiro, maria; Almeida, Angela; Dória, Armanda; Guedes, A; Alexandre Lima; Martins, Helena; Sant'Ovaia, H; Nogueira, PedroAntes da década de setenta do século passado a génese da grande maioria dos jazigos metálicos era interpretada como ligada ou dependente de processos magmáticos. Ou seja a génese das concentrações era interpretada como resultante da cristalização directa de um magma e/ou de fluidos hidrotermais também eles derivados de processos de diferenciação magmática (fluidos magmáticos). Hoje está estabelecido que outros ...
Genesis and emplacement of felsic Variscan plutons within a deep crustal lineat...
H. C. B. Martins; Sant'Ovaia, H; Noronha, FMultidisciplinary studies integrating, U-Pb geochronology, whole-rock geochemical data, isotope geochemistry, anisotropy of magnetic susceptibility (AMS) studies and gravimetry were carried out on the Vila Pouca de Aguiar and the Aguas Frias-Chaves porphyritic biotite granite plutons. Both plutons occur independently in a distance of about 20 km. The Vila Pouca de Aguiar and Aguas Frias-Chaves plutons are examp...
Genesis and emplacement of felsic Variscan plutons within a deep crustal lineat...
Martins, HCB; Sant'Ovaia, H; Noronha, FMultidisciplinary studies integrating, U-Pb geochronology, whole-rock geochemical data, isotope geochemistry, anisotropy of magnetic susceptibility (AMS) studies and gravimetry were carried out on the Vila Pouca de Aguiar and the Aguas Frias-Chaves porphyritic biotite granite plutons. Both plutons occur independently in a distance of about 20 km. The Vila Pouca de Aguiar and Aguas Frias-Chaves plutons are examp...