 | | Report (volume) | | Late Quaternary Stratovolcanoes on Sao Miguel, Azores U.S. GEOLOGICAL SURVEY BULLETIN 1900 Prepared...cooperation with the Regional Government of the Azores AVAILABILITY OF BOOKS AND MAPS OF THE U.S. GEOLOGICAL...Miguel, Azores By RICHARD B. MOORE Prepared in cooperation with the Regional Government of the Azores U...late Quaternary stratovolcanoes on Sao Miguel, Azores I by Richard B. Moore. p. em. (U.S. Geological...Government of the Azores." Includes bibliographical references. 1. Volcanoes-Azores-Sao Miguel Island |  | | Journal (article/letter/editorial) | | Alkaline and Saturated Peralkaline Volcanics from Terceira, Azores Stephen Self* and Bernard M. Gunn Department...Abstract. Four volcanoes form Terceira, one of the islands of the Azores group; three contain both basaltic...younger basaltic lavas. Since the emergence of Terceira there has been a contemporaneity of basalt and...Introduction The island of Terceira is one of nine volcanic islands of the Azores archipelago, which trend...1972), but pantelleritic rocks are only found on Terceira. The eruption of salic magma has often been associated |  | | Journal (article/letter/editorial) | | of trachytic glass without devitrification, Terceira, Azores JAMESE. MUNGALLand ROBERTF. MARTIN Department...peralkaline trachyte lava on the island of Terceira, Azores, has undergone extensive leaching at ambient...such interactions bear on the routine dating of obsidian by anthropologists ( MICHELSet al., 1983); on...flanks of Santa Barbara volcano on Terceira island, in the Azores. Previous studies of natural glasses...et al. ( 1978) showed that natural hydration of obsidian is accompanied by significant losses of Na, K |  | | Book | | ATLANTIC 10 22 30 Portugal: the Azores 35 39 42 43 43 44 Sao Miguel Sai1ta Maria Terceira Graciosa Sao Jorge... Iceland, and the Azores vvithin the European umbrella, although two of the Azores and half of Iceland...volcanoes are in intensive care, whereas those in the Azores, for instance, have undeservedly progressed little...AD 874, and no human being even settled in the Azores until 1439. But there are historical records and...AD 1630 eruption of Furnas vo lcano, S80 Miguel, Azores. 69: fig. 1, p. 119. Orsi, G., M. Piochi, L. Ca1npr1jola | | | Book | | THE ATLANTIC Portugal: the Azores 35 39 42 43 43 44 44 Sao Migt1el Santa Maria Terceira Graciosa Sao... Iceland, and the Azores withi11 the European umbrella, although two of the Azores and half of Icela11d...of the atmospheric elements, and settled in the Azores until 1439. the different strengths of the rocks...accl1rate dates in intensive care, whereas those in the Azores, of eruptions are only just becoming available...1630 eruption of Ft1rnas volcano, Sao Migt1el, Azores. 69: fig. 1, p. 119. ·-t ! : Orsi, G., M. Piochi |  | | Journal (article/letter/editorial) | | by red clay. Very interesting nodules. OREGON—"Obsidian from extreme northeast corner of Lake County,...the much younger eastern section of Australia. AZORES—Through the courtesy and kind interest of Arthur...happy possessors of three volcanic rocks from the Azores. The rocks had been collected by Lieut. Arthur...U.S. Army Corps of Engineers at Lajes, Terceira Island, Azores (U. S. Air Force base since June 1958)...rock). The Azores are a group of 9 volcanic islands in the Atlantic belonging to Portugal. Terceira is one |  | | Book | | WORKSHOP W2 – 11th CONGRESS ISRM, PONTA DELGADA, AZORES, PORTUGAL, 14–15 JULY 2007 Volcanic Rocks Editors Ana...Delgada, Azores, Portugal João Carlos Nunes Department of Geosciences, University of Azores, Ponta Delgada...Delgada, Azores, Portugal LONDON / LEIDEN / NEW YORK / PHILADELPHIA / SINGAPORE © 2007 Taylor & Francis...B. Voight & J. Taron Geological hazards at the Azores region J.L. Gaspar, G. Queirós & T. Ferreira 1...del Potro Volcanostratigraphic profiles for the Azores region: A contribution for the EC8 Regulations |  | Macdonald, Ray, Bagiński, Bogusław, Ronga, Fiorenzo, Dzierżanowski, Piotr, Lustrino, Michele, Marzoli, Andrea, Melluso, Leone (2012) Evidence for extreme fractionation of peralkaline silicic magmas, the Boseti volcanic complex, Main Ethiopian Rift. Mineralogy and Petrology, 104 (3) 163-175 doi:10.1007/s00710-011-0184-4 | Journal (article/letter/editorial) | | Scaillet and Macdonald (2006) in a pantellerite obsidian from the Eburru volcanic complex. The majority...majority of Boseti glasses fall below the obsidian field, suggesting that they have lost some Na relative to...pantellerites of Pico Alto, Terceira, Mungall and Martin (1996); Fantale obsidian, Ethiopia, Lacroix (1930)...peralkaline silicic magmas of a pantellerite obsidian from the Fantale volcano, Ethiopia, with 6.26...crystallised pantellerites of the Pico Alto volcano, Terceira, Azores, have Al2O3 as low as 5.00 wt.% and FeO up |  | | Report (issue) | | Ignimbrite stratigraphy and chronology on Terceira Island, Azores ..................... PSS Ralf Gertisser...Ischia (Italy), Cappadocia (Turkey), and Terceira Island (Azores). Another example is given by Marti et...Ignimbrite stratigraphy and chronology on Terceira Island, Azores, in Groppelli, G., and Viereck-Goette,...eruption 5.2 produced the historic extrusion of the obsidian coulée of Rocche Rosse, which is the last recorded...well-developed flow foliation (consisting of interbanded obsidian and lithic rhyolite layers) and rampart structures |  | | Journal (article/letter/editorial) | | de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal Madeira Rochas, Avenida Arriga 75, Conjunto Monumental...Apartamento 506, 9000 - 060, Funchal, Madeira, Portugal GEOBIOTEC, Geosciences Department, University...Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal d Dept. of Geochemistry, GEUS, Øster Voldgade...the Atlantic Ocean, the Canaries, Cape Verde, Azores and the Madeira archipelago, are predominantly...islands with abundant precipitation such as the Azores (Cruz et al., 2014) over the semi-arid Canaries |  | | Journal (article/letter/editorial) | | Magmatic Activity in Agua de Pao Volcano, Sao Miguel, Azores by E. WIDOM 1 *, J. B. GILL 1 , AND H.-U. SCHMINCKE...trachyte eruptions of Agua de Pao volcano, Sao Miguel, Azores, represent bulk liquid compositions resembling...trachyte eruptions of Agua de Pao volcano (Sao Miguel, Azores) also appear to represent MAGMAT1C ACTIVITY IN...velocities of residual melt. The Azores island group emerges from the Azores Platform, a topographic high...island group, and straddles the seismically active Terceira rift (Searle, 1980). FIG. I. Map of the North |  | | Report (chapter) | | evolution of Sete Cidades Volcano, São Miguel Island, Azores G. QUEIROZ1*, J. L. GASPAR1, J. E. GUEST2†, A....Mãe de Deus, 9500-321 Ponta Delgada, Açores, Portugal 2 Department of Earth Sciences, University College...Cidades was the most active central volcano in the Azores with 17 explosive eruptions predominantly with...km from the average depth of the seafloor of the Azores Platform, Sete Cidades volcanic massif is located...(eds) 2015. Volcanic Geology of São Miguel Island (Azores Archipelago). Geological Society, London, Memoirs |  | | Journal (article/letter/editorial) | | 1955).In the anorthoclasefrom Quatre Ribeiras,Azores(No. 15), which was almost certainly derived from...1883), and in specimen S. C. XX (No. 6) from an obsidian in the San Juan Mountains (Larsen and Larsen,...photographs. The anorthoclasefrom Grande Caldeira, Azores (No. 14), showed three 201 reflections in the powder...anorthoclase from Quatre Ribeiras, Ile de Terceira, Azores,was part of the material originally describedby...Feldspath triclinique de Quatre Ribeiras (Ile de Terceira): Bu.l,l. Soc. Mi,n. d.eFronce,6, 197-219. OPTICAL |  | White, J. C., Ren, M., Parker, D. F. (2005) VARIATION IN MINERALOGY, TEMPERATURE, AND OXYGEN FUGACITY IN A SUITE OF STRONGLY PERALKALINE LAVAS AND TUFFS, PANTELLERIA, ITALY. The Canadian Mineralogist, 43 (4) 1331-1347 doi:10.2113/gscanmin.43.4.1331 | Journal (article/letter/editorial) | | Urbanczyk 2001; Ascension Island: Kar et al. 1998; Terceira, Azores: Mungall & Martin 1995; Boina volcanic center...Comparison of the crystallization of pantelleritic obsidian under hydrous and anhydrous conditions. Progress...comendite and basalt–pantellerite suites, Terceira, Azores, and some implications for the origin of ocean-island |  | | Journal (article/letter/editorial) | | effects of steam on the volcanic rocks of Terceira in the Azores, in which the author observed small aggregations...in Hungary, some singular little oval balls of obsidian, found strewed on the surface of the ground, their...Darwin to describe and figure a volcanic bomb of obsidian from AustrMia, which exhibits the external structure...laminated beds, alternating with and passing into obsidian. These consist,--1, of a pale gray, irregularly...comprehension of the history of their passage into obsidian, which, with its accompaniments, we deem one of |  | | Journal (article/letter/editorial) | | preliminary study of a pla gioclase phenocryst from Terceira, Azores (Shimizu 1978), showed a sudden increase...analysis of augite phenocrysts in alkali basalts from Terceira shows that they have concentric growth zones of...phenocryst in alkali o.livine basalt (T7) from Terceira, Azores (Shimizu, unpublished data) . 514 SHIMIZU...composition with differ ent water content, and rhyolite obsidian samples, indicating a significant "matrix effect...approach to quan titatively map the water content in obsidian samples run in a series of hydration experiments |  | | Journal (article/letter/editorial) | | et al. (2004); Pantelleria White et al. (2009); Terceira Mungall and Martin (1995). Two mixed-magma rocks...(SB30) in this study is a peralkaline rhyolitic obsidian from the Olenguruoni centre. Black et al. (1997)...basalt-comendite and basalt-pantellerite suites, Terceira, Azores, and some implications for the origin of ocean-island |  | Taylor, Rex N., Davila-Harris, Pablo, Branney, Michael J., Ruth Farley, E.M., Gernon, Thomas M., Palmer, Martin R. (2020) Dynamics of a chemically pulsing mantle plume. Earth and Planetary Science Letters, 537. 116182 doi:10.1016/j.epsl.2020.116182 | Journal (article/letter/editorial) | | 1 and 2 respectively. Fresh pumice fragments, obsidian and phonolite lava were collected from felsic...UTM lat 206 Pb/204 Pb 207 Pb/204 Pb obsidian pumice obsidian phonolite 28R 28R 28R 28R 342545E 342803E...Harris, 2009 Mocan TF357(a) TF357(b) pumice obsidian 28R 350423E 28R 350423E 3109792N 3109792N 19...2009 San Juan TF317a TF317b TF317c obsidian obsidian obsidian 28R 323651E 28R 323651E 28R 323651E...Harris, 2009 Adeje TF315a TF315b TF315c obsidian (plag ) obsidian pumice 28R 330048E 28R 330048E 28R 330048E |  | | Report (chapter) | | Eruptive history of Fogo Volcano, São Miguel, Azores N. WALLENSTEIN1*, A. DUNCAN2,3, J. E. GUEST4†&...Mãe de Deus, 9500-321 Ponta Delgada, Açores, Portugal 2 Institute of Biological, Environmental Science...(eds) 2015. Volcanic Geology of São Miguel Island (Azores Archipelago). Geological Society, London, Memoirs...volcanoes as a whole (Gaspar 1996; Queiroz 1997). The Azores region’s principal tectonic regime (Carmo et al...lithics, with boulders ranging in size to .50 cm. Obsidian fragments are abundant. The deposit shows some |  | | Journal (article/letter/editorial) | A Description of the Island of St. Michael (Azores) Author(s): Carew Hunt Source: Journal of the Royal...VII. A Descreption of the Islad of St. Michael(Azores). Ely lSlIr.ConsulCAREWHUNr. 1. T 1I13 islan(l...+ + + + + + t . ISISNDOF S1 MICHAEAzores) 1845. l l ...islets of this kind has been a commoneventin the Azores) an(l manyformed of firmermaterialsstill existto...and scoriae,an(lthe lighterparticlescarrie(lto Terceira,a distanceof 530miles. A circularhill of regular |  | | Journal (article/letter/editorial) | | Experimental and analytical techniques Powdered obsidian glass (20 mg) was loaded into Au capsules (1.5...with known water content, made from the Eburru obsidian, was used to determine the empirical correction...interstitial glasses in peralkaline rhyolites from the Azores (Mungall and Martin, 1996). It has also an elevated...Extreme differentiation of peralkaline rhyolite, Terceira, Azores: a modern analogue of Strange Lake, Labrador |  | | Report (volume) | | found at Vesuvius, Etna, Santorin, Terceira Island (in the Azores), and at Pelee by Fouque, Gorceix,...and extended this investigation.6 From a Lipari obsidian he dissolved out with ether a vaseline-like grease...1901 and in Santorin andesite of 1866. Even an obsidian from Plomb du Cantal (Auvergne), the date of which...conceive that in exceptional circumstances an obsidian should have been kept melted within a few thousand |  | | Journal (article/letter/editorial) | | under low f O2 conditions. A natural pantelleritic obsidian from the Fantale volcano, Ethiopia (Lacroix,...in pantellerites of the Pico Alto volcano, Terceira, Azores. As there is no obvious reason for the increase...basalt---comendite and basalt---pantellerite suites, Terceira, Azores, and some implications for the origin of ocean-island...Extreme differentiation of peralkaline rhyolite, Terceira, Azores: a modern analogue of Strange Lake, Labrador |  | LaTourrette, T., Wasserburg, G.J., Fahey, A.J. (1996) Self diffusion of Mg, Ca, Ba, Nd, Yb, Ti, Zr, and U in haplobasaltic melt. Geochimica et Cosmochimica Acta, 60 (8) 1329-1340 doi:10.1016/0016-7037(96)00015-4 | Journal (article/letter/editorial) | | W. (1978) Diffusion of Eu and Gd in basalt and obsidian. Geochim. Cosmochim. Acra 42, 847-858. Morris...of trachytic glass without devitrification, Terceira, Azores. Geochim. Cosmochim. Acta 58, 75-83. Nagasawa |  | | Journal (article/letter/editorial) | | of trachytic glass without devitrification, Terceira, Azores. Geochimica et Cosmochimica Acta 58:75–83...Messier R. F., White W. B., and Michels J. W. 1978. Obsidian hydration profiles measured by sputter-induced |
|
Serreta, Angra do HeroÃsmo, Terceira, Azores, Portugal