 | Beier, Christoph, Bach, Wolfgang, Busch, Alexander V., Genske, Felix S., Hübscher, Christian, Krumm, Stefan H. (2019) Extreme intensity of fluid-rock interaction during extensive intraplate volcanism. Geochimica et Cosmochimica Acta, 257. 26-48 doi:10.1016/j.gca.2019.04.017 | Journal (article/letter/editorial) | | lavas during their eruptive history. The submarine Azores Plateau in the Central Northern Atlantic has generally...basalts that correspond to a melting anomaly in the Azores. Our observations indicate that the extreme levels...magmatic activity during initial formation of the Azores Plateau and the tectonic regime providing pathways...oceanic plateaus. Keywords: large igneous province; Azores Plateau; water-rock reactions; ocean-crust exchange..., 2016). A substantial volume of the submarine Azores archipelago has been emplaced during arrival of |  | Jeffery, A. J., Gertisser, R., Jackson, R. A., O'Driscoll, B., Kronz, A. (2016) On the compositional variability of dalyite, K2ZrSi6O15: a new occurrence from Terceira, Azores. Mineralogical Magazine, 80 (4) 547-565 doi:10.1180/minmag.2016.080.018 | Journal (article/letter/editorial) | | dalyite, K2ZrSi6O15: a new occurrence from Terceira, Azores A. J. JEFFERY1,*, R. GERTISSER1, R. A. JACKSON1...been identified for the first time on Terceira, Azores, within syenitic ejecta of the Caldeira-Castelinho...peralkaline, syenite, oceanic island magmatism, Terceira, Azores. Introduction DALYITE is a rare potassium zirconium...from the mildly peralkaline rocks of Terceira, Azores. We apply solid-state modelling to investigate...ET AL. ejecta from Agua de Pau volcano, São Miguel, Azores (Cann, 1967; Widom et al., 1993), where it |  | Harris, A. J. L., Villeneuve, N., Di Muro, A., Ferrazzini, V., Peltier, A., Coppola, D., Favalli, M., Bachèlery, P., Froger, J.-L., Gurioli, L., Moune, S., Vlastélic, I., Galle, B., Arellano, S. (2017) Effusive crises at Piton de la Fournaise 2014–2015: a review of a multi-national response model. Journal of Applied Volcanology, 6. doi:10.1186/s13617-017-0062-9 | Journal (article/letter/editorial) | | 1958 Faial Azores Portugal 24,414 1690 Santa Barbara 2000 Terceira Azores Portugal 55,425 1660...1660 San Jorge 1964 São Jorge Azores Portugal 16,290 1635 Lanzarote 1824 Lanzarote Canary Islands...1564 São Miguel Azores Portugal 113,131 1445 Picos volcanic system 1652 São Miguel Azores Portugal...1880 São Miguel Azores Portugal 102,848 1445 Furnas 1630 São Miguel Azores Portugal 87,865...865 1415 Pico 1720 Pico Island Azores Portugal 31,521 1334 Hierro 2012 Hierro Island Canary |  | Trolese, Matteo, Giordano, Guido, Cifelli, Francesca, Winkler, Aldo, Mattei, Massimo (2017) Forced transport of thermal energy in magmatic and phreatomagmatic large volume ignimbrites: Paleomagnetic evidence from the Colli Albani volcano, Italy. Earth and Planetary Science Letters, 478. 179-191 doi:10.1016/j.epsl.2017.09.004 | Journal (article/letter/editorial) | | higher (69 mT); anyway, the significant presence of hematite can be excluded also in this sample, since the...ignimbrites of the 4.6 ka Fogo A eruption sequence, São Miguel, Azores. Bull. Volcanol. 77 (99). http://dx.doi.org/10...temperature of ignimbrites: Fogo A sequence, São Miguel, Azores, Portugal, as a case study. Bull. Volcanol. 77 |  | von Strandmann, Philip A.E. Pogge, Burton, Kevin W., James, Rachael H., van Calsteren, Peter, Gislason, Sigurður R. (2010) Assessing the role of climate on uranium and lithium isotope behaviour in rivers draining a basaltic terrain. Chemical Geology, 270 (1) 227-239 doi:10.1016/j.chemgeo.2009.12.002 | Journal (article/letter/editorial) | | 2009 Accepted 1 December 2009 Keywords: Sao Miguel Azores Uranium isotopes Lithium isotopes Weathering...basaltic catchments on the island of Sao Miguel in the Azores Archipelago. Uranium activity ratios are...the behaviour of U and Li isotopes between Sao Miguel, Iceland, and other basaltic terrains suggests...and Henderson, 2003; Vigier et al., 2008). The Azores archipelago provides the opportunity to study the...high rainfall. In terms of weathering rates, the Azores have virtually identical chemical weathering rates |  | Macdonald, R., Bagiński, B., Leat, P.T., White, J.C., Dzierżanowski, P. (2011) Mineral stability in peralkaline silicic rocks: Information from trachytes of the Menengai volcano, Kenya. Lithos, 125 (1) 553-568 doi:10.1016/j.lithos.2011.03.011 | Journal (article/letter/editorial) | | settings, e.g. ocean islands such as Terceira, Azores (Self and Gunn, 1976) and Socorro Island, Mexico...for K, albite for Na, diopside for Si and Mg, hematite for Fe, synthetic NiO for Ni, rhodocrosite for...(1990), Villari (1974), White et al. (2005, 2009); Azores, Schmincke and Weibel (1972), White et al. (1979);...modes among the peralkaline rhyolites of Terceira, Azores. The pantelleritic suite of Pico Alto evolved at...energy and molecular volume data for ilmenite, hematite, ulvöspinel, magnetite, fayalite and quartz are |  | Zolotarev, Andrey, Selivanova, Ekaterina, Krivovichev, Sergey, Savchenko, Yevgeny, Panikorovskii, Taras, Lyalina, Lyudmila, Pautov, Leonid, Yakovenchuk, Victor (2018) Shkatulkalite, a Rare Mineral from the Lovozero Massif, Kola Peninsula: A Re-Investigation. Minerals, 8 (7) 303 doi:10.3390/min8070303 | Journal (article/letter/editorial) | | rhodonite (Mn), corundum (Al), celestine (Sr), hematite (Fe), and Nb (Nb). Alternatively the chemical...(KKα), synthetic MnCO3 (MnKα), Y3 Al5 O12 (AlKα), hematite (FeKα), apatite (PKα) and Nb (NbLα). The fluorine...the Lagoa do Fogo, the Fogo volcano, São Miguel Island, the Azores: Description and crystal structure. |  | | Journal (article/letter/editorial) | | A137 Geochemical variability of the mantle beneath São Tomé Island (Cameroon Volcanic Line) Impact of sulfide...1 LNEG- U. Geologia e Cartografia Geológica, Portugal (*correspondence: rita.caldeira@ineti.pt) 2 CeGUL-...Univ. Lisboa 4 LATTEX- Fac. Ciências, Univ. Lisboa São Tomé is an intraplate oceanic island belonging to...regarding its source of magmatism. Here we look at São Tomé elemental geochemistry in light of the main...Afonso Volcanic Complex (CRA: 2.5 - 5 Ma) and the São Tomé Volcanic Complex (CST: < 1.5 Ma). Major and |  | Poletti, Wilbor, Trindade, Ricardo I.F., Hartmann, Gelvam A., Damiani, Nadir, Rech, Raquel M. (2016) Archeomagnetism of Jesuit Missions in South Brazil (1657–1706 AD) and assessment of the South American database. Earth and Planetary Science Letters, 445. 36-47 doi:10.1016/j.epsl.2016.04.006 | Journal (article/letter/editorial) | | Atmosféricas, Universidade de São Paulo, Rua do Matão, 1226, 05508-090, São Paulo, Brazil b Observatório...from three Jesuit Missions, São Luiz Gonzaga 1657–1687 AD (3 fragments), São João Batista 1667–1697 AD...within error for the three missions: São Luiz Gonzaga (40.2 ± 2.4 μT), São João Batista (39.1 ± 1.6 μT) and...materials from three Jesuit reductions, São Luiz Gonzaga (3 fragments), São João Batista (4 fragments) and Santo...Reduction of São Miguel Arcanjo, Brazil. Pictures (e) and (f) show pavement tiles sampled in São João Batista |  | Maza, Santiago, Collo, Gilda, Morata, Diego, Cuña-Rodriguez, Carolina, Taussi, Marco, Renzulli, Alberto (2021) The Hydrothermal Alteration of the Cordón de Inacaliri Volcanic Complex in the Framework of the Hidden Geothermal Systems within the Pabelloncito Graben (Northern Chile) Minerals, 11 (11) 1279 doi:10.3390/min11111279 | Journal (article/letter/editorial) | | occurred; (ii) argillic alteration with kaolinite + hematite + halloysite + smectite + I/S + illite in the...CT; nite-gypsum; 3—calcite domain; 4—kaolinite-hematite-halloysite-illite-smectite and 5— 2—alunite-gypsum;...2—alunite-gypsum; 3—calcite domain; 4—kaolinite-hematite-halloysite-illite-smectite and silica phases (Figure 4)...kaolinite-hematite—halloysite-illite-smectite domain (4) developed in the active kaolinite-hematite–-hall...5). This domain (4) consists kaolinite (3–25%), hematite (5–45%), opal-CT illite (1–10%) and halloysite |  | | Journal (article/letter/editorial) | | of the magmatic system of Furnas volcano, São Miguel, Azores R. GERTISSER1, J. L. GASPAR2, J. M. PACHECO2...Universidade dos Açores, 9501-801 Ponta Delgada, Açores, Portugal 3 Department of Earth Sciences, The Open University...trachytic central volcanoes on the island of São Miguel, Azores. It is regarded as one of the most active...active and dangerous volcanoes in the Azores archipelago owing to a population of several thousand people...(Furnas J) occurred after the settlement of the Azores archipelago in 1630 AD. Eruptions of the Upper |  | | Journal (article/letter/editorial) | | sodalite-bearing syenites (curve 6) of Agua de Pau (Azores); agpaitic nepheline syenite of Tenerife (curve...calculated 2Ce2O3 + O2 = 4CeO2 equilibrium curve; hematite–magnetite (HM), nickel– nickel oxide (NNO), f...plinian deposits of Agua de Pau volcano (São Miguel, Azores Islands). Min. Mag. 67, 749–767. Rock, N |  | | Journal (article/letter/editorial) | | do Porto, Praça Gomes Teixeira, 4099-002 Porto, Portugal (adoria@fc.up.pt) A 270-year ice core record...transition metals. Iron isotope β-factors for hematite, magnetite, pyrite, siderite, etc. have been verified...anaerobe Geobacter sulfurreducens was grown with hematite and goethite as its terminal electron acceptor...0.118‰), Fe-carbonate (-0.913 to –0.430‰), and hematite (0.122‰). Their δ56Fe are consistent with oxidative...diagenetic mineral produced by reactions between hematite and ferrous iron in silicates and carbonates, |  | | Journal (article/letter/editorial) | | ULBRICH Instituto de Geociências, Universidade de São Paulo, São Paulo, CEP 05508–080, Brazil Abstract The...NW-trending Brasília Orogen, at the W–SW margin of the São Francisco craton, and the ENE–NNE-trending Mantiqueira...Mantiqueira Orogenic System, which appears east of the São Francisco Craton and, southward, flanks a mass formed...major terranes: one is a Nappe System related to the São Francisco Plate (Trouw et al. 2000), and the other...the Socorro–Guaxupé Nappe (SGN) and the Apiaí – São Roque Domain (ASRD). The SGN exposes a ~20 km section |  | | Journal (article/letter/editorial) | | and near neutral pH and transform to geothite or hematite. Both schwertmannite and ferrihydrite can take...control of metals in a mountainous river basin, NE Portugal ESTELA REINOSO-MASET*, PAUL J. WORSFOLD AND MIRANDA...Vila Real, Portugal, and Centre for Geophysics, University of Coimbra, Coimbra, Portugal (anarreis@utad...Corgo mountainous rural hydrographic basin (NE Portugal). These two zones correspond to relatively large...9-16. Goldschmidt Conference Abstracts 2008 Azores and MAR basalts similarity, a multidimensional |  | | Journal (issue) | | France; Rui Galopim de Carvalho, Portugal Gemas, Lisbon, Portugal; Lee A. Groat, University of British...only a few decades after Brazil was claimed for Portugal by Pedro Álvares Cabral in 1500. Led by an explorer...Boa, ~5 km from the Cruzeiro tourmaline mine in São José da Safira. (This is ~120 km north-east of the...Mid-20th Centuries) After Brazil’s independence from Portugal in 1822, the new emperor Dom Pedro I opened the...tourmaline. Uncovered for the first time in 1987 in the São José da Batalha district of Paraíba, this tourmaline’s |  | | Book | | Heilbron Umberto G. Cordani Fernando F. Alkmim Editors São Francisco Craton, Eastern Brazil Tectonic Genealogy...Umberto G. Cordani Fernando F. Alkmim • Editors São Francisco Craton, Eastern Brazil Tectonic Genealogy...Brazil Umberto G. Cordani Universidade de São Paulo São Paulo Brazil ISSN 2364-6438 Regional Geology...Panoramic view of the interior plateau of the northern São Francisco craton known as the Chapada Diamantina...Gewerbestrasse 11, 6330 Cham, Switzerland Foreword The São Francisco Craton is one of the five cratons that comprise |  | | Journal (article/letter/editorial) | | well as traces of halite, pyrite, goethite, or hematite. Talc, serpentine, pyroxene, amphibole, as well...halides, feldspar, opal-CT, talc, serpentine, or hematite (Table 2). Sulfates and halides were removed by...waters: cases of Ischia (Italy) and São Miguel (Azores, Portugal). Hydrol. Process. 22, 4386–4399. Morrison |  | | Book | | Vieira, Maria Luiza Fernandes 7 11 11a - CRÁTON SÃO FRANCISCO Yociteru Hasui 11b - QUADRILÁTERO FERRÍFERO...11d - BACIA DO SÃO FRANCISCO Pedro Victor Zalán, Paulo César Romeiro Silva 12 - CRÁTON SÃO LUÍS Yociteru...CORPOS ALCALINOS DE POÇOS DE CALDAS, ITATIAIA E SÃO SEBASTIÃO Fernando F. M. de Almeida, Celso Dal Ré...Edições Ltda. Rua Capote Valente, 779 CEP 05409-002 São Paulo SP Brasil www.editorabeca.com.br 2012 Geologia...Flávio Marques de Almeida; Andrea Bartorelli; - São Paulo: Beca, 2012. 900p. Apêndice Inclui bibliografia |  | Crósta, A.P., Reimold, W.U., Vasconcelos, M.A.R., Hauser, N., Oliveira, G.J.G., Maziviero, M.V., Góes, A.M. (2019) Impact cratering: The South American record – Part 1. Geochemistry, 79 (1) 1-61 doi:10.1016/j.chemer.2018.06.001 | Journal (article/letter/editorial) | | Federal University of Bahia, Brazil e University of São Paulo, Brazil b c A R T I C LE I N FO A B S T R...universities such as the Universities of Campinas, São Paulo, Brasília, and the Federal University of Bahia...Neoproterozoic. These cratons, the Amazonian, São Francisco, São Luís, Parnaíba, Paranapanema, Luiz Alves...America, the Colônia structure near the mega-city of São Paulo in southeastern Brazil. Still, there is no...quartz, and accessory zircon, titanite, magnetite, hematite, and tourmaline. Xenoliths of metamorphosed sandstone |  | | Journal (article/letter/editorial) | | initial results from goethite, diaspore, alumina and hematite interfacial characterization. A1424 Goldschmidt...disequilibria studies of Fogo and Furnas volcanoes, São Miguel, Azores ELISABETH WIDOM1*, SHIZUKO WATANABE1, DARIN...(ARowlandsm@aol.com) The island of São Miguel is the most populous of the nine Azores islands with approximately...from Hawaii, ε182W values for samples from the Azores, Canary Islands, Cape Verdes and the Ontong-Java |  | | Journal (article/letter/editorial) | | isopycnal mixing with long-distance effects. 1151 Hematite/Water Interfaces Probed by Second Harmonic Generation...Fe(II) at pH 4 and in 1 mM NaCl with ALD-prepared hematite was found to be fully reversible and to lead to...dynamic equilibrium between Fe(II) adsorbed onto hematite, electron transfer into favorable surface sites...spectroscopy. The interaction of Cr(III) with hematite was compared with the adsorption of Cr(III) to...interface, which is the substrate for the ALDprepared hematite films, and found to be fully reversible under |  | Gurenko, A.A., Hoernle, K.A., Hauff, F., Schmincke, H.-U., Han, D., Miura, Y.N., Kaneoka, I. (2006) Major, trace element and Nd–Sr–Pb–O–He–Ar isotope signatures of shield stage lavas from the central and western Canary Islands: Insights into mantle and crustal processes. Chemical Geology, 233 (1) 75-112 doi:10.1016/j.chemgeo.2006.02.016 | Journal (article/letter/editorial) | | (Crt)–magnetite (Mt)–ulvöspinel (Usp) and ilmenite (Ilm)–hematite (Hmt) solid solutions, are present as (1) numerous...olivines from Gran Canaria, Canary Islands, and São Miguel, Azores (4.6–5.3‰; Thirlwall et al., 1997; Widom...Petrol. 32, 1021–1091. Middlemost, E.A.K., 1970. San Miguel de La Palma—A volcanic island in section. Bull...Oxygen isotope signatures in olivines from Sao Miguel (Azores) basalts: implications for crustal and mantle |  | | Journal (article/letter/editorial) | | Sr-Nd-Pb isotopic data on Graciosa island lavas (Azores) P. LARREA1,2*, E. WIDOM2, C. GALÉ1, T. UBIDE1...Açores, São Miguel, Portugal 1 The Graciosa island belongs to the Central Group of the Azores archipelago...recently reported in other islands from central Azores [3]. [1] Feraud et al.. (1989) Earth Planet.Sci...Instituto De Technologia Quimica E Biologica, Oeiras, Portugal, 3 Dept. of Earth and Planetary Sciences, Washington...08% of Na2O, 6.07% of TiO2, and 5.07% of CaO. Hematite, boehmite, zeolite, quartz, anatase and calcite |  | | Journal (article/letter/editorial) | | for the sample PME-11 showed a well-crystallized hematite (Bhf ≈ 51T, εQ ≈ −0.213 mm/s, IS = 0.378 mm/s)...probable impact sites: Colônia (d = 3.6 km) and São Miguel do Tapuio (d = 20 km). The most recent review...Cangalha and Riachão, while probable impacts are São Miguel do Tapuio (5°38′S; 41°24′W; d = 20 km; impact...feature forming a depression nearby the city of São Paulo [7]), Aimores (19°25′S, 41°03′W; d = 10 km)...GEOLOGICAL, GEOPHYSICAL, AND IMAGING DATA OF SÃO MIGUEL DO TAPUIO (SMT) ASTROBLEME, BRAZIL R. Mariano |
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Água de Pau Volcano, São Miguel, Azores, Portugal