Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Isabel Ribeiro da Costa"'
Publikováno v:
Minerals; Volume 12; Issue 10; Pages: 1300
Chromite oxidation during serpentinization of host peridotites is a well-documented process. Detailed compositional characterization of chromites and Cr-rich spinels from three geotectonic settings provided the basis for this study, focused on the co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63164289db7d0aae2766d9850a037b5d
Autor:
Ivo Martins, António Mateus, Michel Cathelineau, Marie Christine Boiron, Isabel Ribeiro da Costa, Ícaro Dias da Silva, Miguel Gaspar
Publikováno v:
Minerals; Volume 12; Issue 9; Pages: 1067
Highly fractionated granites and related magmatic-hydrothermal ore-forming processes can be traced by elemental ratios such as Nb/Ta, K/Rb, Y/Ho, Sr/Eu, Eu/Eu*, Zr/Hf, and Rb/Sr. The lanthanide “tetrad effect” parameter (TE1,3) can also be a usef
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c33dd43812d5af606323cbd662370a8
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Revised proof
In the recent past, important research has shown how tourmaline can be used as a petrogenetic indicator in pegmatite rocks and related mineralization. A previous study by Ribeiro da Costa and Antunes (2019) demonstrated that tourma
In the recent past, important research has shown how tourmaline can be used as a petrogenetic indicator in pegmatite rocks and related mineralization. A previous study by Ribeiro da Costa and Antunes (2019) demonstrated that tourma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e8a91f6af7dc2169c29063f5e2974aa
https://doi.org/10.1007/s41513-020-00158-5
https://doi.org/10.1007/s41513-020-00158-5
Publikováno v:
The Canadian Mineralogist. 57:677-706
The Rainbow hydrothermal field (36°14′N) and the Saldanha seamount (36°34′N), in the Mid-Atlantic Ridge (MAR), are tectonic exposures of serpentinized upper mantle peridotites, both associated with significant hydrothermal activity. On the basi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6b66ca08d6267bef78dc48370ae2e387
https://doi.org/10.3749/canmin.1900010
https://doi.org/10.3749/canmin.1900010
As despesas fiscais preenchem hoje uma grande fatia dos custos associados à actividade das empresas. Por isso, o presente trabalho versa sobre a possibilidade, ou impossibilidade, de as empresas recorrerem ao planeamento fiscal como forma de reduzir
Externí odkaz:
https://hdl.handle.net/10216/93697
Publikováno v:
Advances in Science, Technology & Innovation ISBN: 9783030725464
Massive granitic magmatism is a dominant feature of the Central Iberian Zone (CIZ) of the Variscan Orogen. For the most part, these are S-type per-aluminous granitic rocks exhibiting variable degrees of evolution and compositions ranging from granodi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff0ecef44ac84eec37b177b7dcbfe100
https://hdl.handle.net/1822/72514
https://hdl.handle.net/1822/72514
Autor:
Isabel Ribeiro da Costa, Ana Isabel Janeiro, Luísa Catarina Martins, Alexandre Araújo, Rita Fonseca, Guilherme Freitas, Catarina Pinho, Nuno Dias
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Agência para a Sociedade do Conhecimento (UMIC)-FCT-Sociedade da Informação
instacron:RCAAP
Agência para a Sociedade do Conhecimento (UMIC)-FCT-Sociedade da Informação
instacron:RCAAP
Draining through industrial areas of the Minas Gerais mining state (Brazil), some tributaries of the Sao Francisco River constitute a potential environmental hazard for this great river and threaten the quality of the regional soils for agriculture a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1525df48d56a6dee2fbe750675efd003
Publikováno v:
Marine and Petroleum Geology. 45:12-16
We report a new case of methane (CH4) of apparent abiotic origin in continental serpentinized ultramafic rocks. Multiple analytical techniques, on-site and in the laboratory, revealed methane and ethane degassing from hyperalkaline (pH > 11) Ca2+–O
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36712db58ad447bd4306e1d137ebd4c7
https://doi.org/10.1016/j.marpetgeo.2013.04.009
https://doi.org/10.1016/j.marpetgeo.2013.04.009
Autor:
Cecilia Viti, Frederick J. Wicks, Fernando J.A.S. Barriga, Isabel Ribeiro da Costa, Marcello Mellini
Publikováno v:
European Journal of Mineralogy. 20:563-572
Deformed, non-psxeudomorphic serpentinites from fault zones in the Rainbow and Menez Hom areas, in the Mid-Atlantic Ridge, contain antigorite associated with variable amounts of chrysotile, while pseudomorphic or non-pseudomorphic lizardite + chrysot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5019ff45999f65c6afeae6df0a5d0f75
https://doi.org/10.1127/0935-1221/2008/0020-1808
https://doi.org/10.1127/0935-1221/2008/0020-1808
Publikováno v:
European Journal of Mineralogy. 20:173-181
Serpentinized ultramafic rocks recovered during several recent oceanographic missions (1997-2002) on the Rainbow hydrothermal field and on the Saldanha seamount (36°14'N and 36°34'N, Mid-Atlantic Ridge) often exhibit late-stage carbonatization asso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b601fb049cb31b8caebf850f7bd3ba1
https://doi.org/10.1127/0935-1221/2008/0020-1803
https://doi.org/10.1127/0935-1221/2008/0020-1803