1-20 OF 59 RESULTS FOR

Sete Cidades

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Article
Journal: Interpretation
Published: 23 March 2017
Interpretation (2017) 5 (2): T219–T230.
... the growing energy demand in the island, it is necessary to extend the exploration efforts to new areas. We evaluated the results of a broadband magnetotelluric reconnaissance survey conducted at Sete Cidades Volcano, placed only 30 km westward of the RG field. The resistivity structure of the Sete Cidades...
FIGURES | View All (7)
Series: Geological Society, London, Memoirs
Published: 01 January 2015
DOI: 10.1144/M44.7
EISBN: 9781862397118
... Abstract Sete Cidades is an active central volcano on the western part of São Miguel. The geological record reveals that subaerial activity started more than 250 ka ago. Stratigraphic units defined for Sete Cidades deposits reflect major events in the history of the volcano and are organized...
FIGURES | View All (21)
Journal Article
Published: 01 March 2000
European Journal of Mineralogy (2000) 12 (2): 469–494.
...Alberto RENZULLI; Patrizia SANTI Abstract A comprehensive data set of mineral and whole-rock major element compositions of the Na-alkaline lavas and pumices erupted by the Sete Cidades volcano (São Miguel Island, Azores) is here presented. Mineralogy and geochemistry of the Sete Cidades extrusives...
FIGURES | View All (10)
Image
Summary petrographic and geochemical descriptions of the <span class="search-highlight">Sete</span> <span class="search-highlight">Cidades</span> volca...
Published: 01 March 2000
Table 2. Summary petrographic and geochemical descriptions of the Sete Cidades volcanic rocks belonging to the Na-alkaline series.
Image
Magnetile-ilmenite geothermometer calculations for the <span class="search-highlight">Sete</span> <span class="search-highlight">Cidades</span> mugeari...
Published: 01 March 2000
Table 12. Magnetile-ilmenite geothermometer calculations for the Sete Cidades mugearite and two-feldspar trachyte.
Image
Ternary-feldspar geothermometer for the <span class="search-highlight">Sete</span> <span class="search-highlight">Cidades</span> two-feldspar trachyte....
Published: 01 March 2000
Table 13. Ternary-feldspar geothermometer for the Sete Cidades two-feldspar trachyte.
Series: Geological Society, London, Special Publications
Published: 01 January 2017
DOI: 10.1144/SP437.14
EISBN: 9781786202918
... Abstract We report the first detailed study on the types and distributions of active subaqueous fumaroles and surface diffuse CO 2 degassing in the three main volcanic lakes of São Miguel Island (Sete Cidades, Fogo and Furnas), Azores archipelago, Portugal. The results of the surveys...
Series: Geological Society, London, Memoirs
Published: 01 January 2015
DOI: 10.1144/M44.9
EISBN: 9781862397118
... Abstract Furnas is the easternmost of the trachytic active central volcanoes of São Miguel. Unlike the other central volcanoes, Sete Cidades and Fogo, Furnas does not have a substantial edifice built up above sea-level. Although not as dominant as the other two volcanoes, Furnas does, however...
FIGURES | View All (10)
Series: Geological Society, London, Memoirs
Published: 01 January 2015
DOI: 10.1144/M44.10
EISBN: 9781862397118
... Abstract Basaltic volcanism occurs at all the active volcanic systems of São Miguel. For the last 30 ka, the eruption of basaltic magma has been particularly significant in the areas between the three polygenetic volcanoes – Sete Cidades, Fogo and Furnas – and two basaltic fields have developed...
FIGURES | View All (9)
Series: Geological Society, London, Memoirs
Published: 01 January 2015
DOI: 10.1144/M44.19
EISBN: 9781862397118
... that dominate the geology of São Miguel, namely Furnas, Fogo and Sete Cidades, 74% of which are springs, 13% fumaroles, 12% wells and 1% hand-dug wells. Total dissolved solids (TDS) values are in the range of 159–20 957 mg l −1 , discharge temperature varies from 15 to 99.5°C and waters are mainly strongly acid...
FIGURES | View All (13)
Series: Geological Society, London, Memoirs
Published: 01 January 2015
DOI: 10.1144/M44
EISBN: 9781862397118
Journal Article
Published: 01 January 2005
Bulletin de la Société Géologique de France (2005) 176 (1): 107–120.
... probabilities for the next 300 years. Pico Mountain, Região dos Picos (São Miguel Island), the stratovolcano of Sete Cidades (São Miguel Island), the linear volcanic complexes of São Roque – Piedade (Pico Island) and of Capelo (Faial Island) must be considered as the most active volcanoes of the archipelago...
Image
Geothermometer (olivine-liquid and olivine-spinel) and geobarometer (olivin...
Published: 01 March 2000
Table 11. Geothermometer (olivine-liquid and olivine-spinel) and geobarometer (olivine-liquid) calculations for the Sete Cidades basalts and hawaiites.
Image
Major elements concentrations and C.I.P.W. normative composition of selecte...
Published: 01 March 2000
Table 1. Major elements concentrations and C.I.P.W. normative composition of selected Na-alkaline volcanic rocks from Sete Cidades.
Image
Total Alkalis - Silica (TAS,  Le Bas  et al.,  1986 ) diagram for the Na-al...
Published: 01 March 2000
Fig. 2. Total Alkalis - Silica (TAS, Le Bas et al., 1986 ) diagram for the Na-alkaline volcanic rocks of Sete Cidades.
Image
(a) Location of the Azores archipelago; (b) São Miguel island with approxi...
Published: 01 March 2000
Fig. 1. (a) Location of the Azores archipelago; (b) São Miguel island with approximate boundaries of the summit caldera volcanoes (Sete Cidades, Agua de Pau, Furnas and Nordeste-Povoaçao), Zone 2 and Zone 4 (after Moore, 1990 ).
Image
Location of the Azores Archipelago at a triple junction. São Miguel has thr...
Published: 24 February 2020
Figure 10. Location of the Azores Archipelago at a triple junction. São Miguel has three main volcanic centers: Sete Cidades (1), Fogo (3), and Furnas (5). The fissural volcanic systems Pico (2) and Congro (4) and the Povoação (6) and the Nordeste volcanic complex (7) are marked as well
Image
Sketch-maps of ( a ) the Azores archipelago and ( b ) São Miguel island, s...
Published: 01 August 2003
F ig . 1. Sketch-maps of ( a ) the Azores archipelago and ( b ) São Miguel island, showing approximate boundaries of the summit caldera volcanoes (Sete Cidades, Agua de Pau, Furnas and Nordeste-Povoaçao) and Zones 2 and 4 (after Moore, 1990 ). Only the outermost summit caldera of Agua de Pau
Image
A)  mafic enclaves of the Shap granite host (England; Phillips 1882).  B)  ...
Published: 01 May 2022
at the Sete Cidades Volcano (São Miguel, Azores; Laeger et al. 2019 ).
Image
(a) Map location of Azores triple junction area with several fracture zones...
Published: 23 March 2017
superimposed on the shaded-relief topography of SCV and its main tectonic and geologic features. MG, Mosteiros Graben; FF, Feteiras Fault; SVA, South Volcanic Alignment; P. Ferraria, Ponta da Ferraria. The inset shows the shaded relief map of São Miguel island topography with the main volcanic systems. Sete