 | | Journal (article/letter/editorial) | | Petrogenesis of the volcanic suite of Bouvetøya (Bouvet Island), South Atlantic TORE PRESTVIK, STEVEN GOLDBERG...Petrogenesis of the volcanic suite of Bouvetøya (Bouvet Island), South Atlantic. Norsk Geologisk Tidsskrift...to the volcanic istand of Bovetøya (close to the Bouvet Triple Junction) are discussed and compared with...with previously published data from the island. The rock types, hawaiite, benmoreite, and peralkaline trachyte...rocks are !hose of a moderately enriched oceanic island suite. On several isotope plots Bouvetøya rocks |  | Moreno, J.A., Molina, J.F., Bea, F., Abu Anbar, M., Montero, P. (2016) Th-REE- and Nb-Ta-accessory minerals in post-collisional Ediacaran felsic rocks from the Katerina Ring Complex (S. Sinai, Egypt): An assessment for the fractionation of Y/Nb, Th/Nb, La/Nb and Ce/Pb in highly evolved A-type granites. Lithos, 258. 173-196 doi:10.1016/j.lithos.2016.04.020 | Journal (article/letter/editorial) | | juvenile crust formed by protracted accretion of island-arc terrains (e.g., TE Bentor, 1985; Stern, 1994...mesoperthitic alkali feldspar (45-50 vol.%), poikilitic arfvedsonite (5-10 vol.%) with inclusions of quartz and alkali...occasional poikilitic aegirine intergrown with arfvedsonite (<1 vol.%). Aluminous syenogranites and alkali...textural feature similar to that presented by arfvedsonite (Fig. 3A), monazite (Figs. 3B) and zircon (see...as in peralkaline granites, where zircon and arfvedsonite are also poikilitic and, hence, late phases |  | | Journal (article/letter/editorial) | | and Associated Plutonic Inclusions of Ascension Island by CHRIS HARRIS1 Dept. of Geology and Mineralogy...revisedform 5 May 1983) INTRODUCTION Ascension Island is a large composite volcano situated at approximately...14°W in the South Atlantic Ocean (Fig. 1). The Island is 98 km2 in area and represents the uppermost...ABSTRACT The lavas and pyroclastics of Ascension Island contain a suite of plutonic inclusions which range...gabbroic inclusions and the assemblage aegirine + arfvedsonite ± aenigmatite + fayalite in the granites suggest |  | | Journal (article/letter/editorial) | | 26(1-2) 115-134 Israel, geochemistry 31(3-4) 103-124 Norway 36( 1) 5 l-66 Pacific Coast, geochemistry 23( l-2)...I IS-132 Arkansas, geochemistry 26( 1-2) 67-98 Norway 17(2) 153.170;22(2)99-112 Portugal, Cretaceous...23(3) 179-200 alstonite 8(3) 199-207 althausite Norway, phosphates 8(3) 215-219; 12(4) 288 aluminosilicates...37(2-3) 181-197 amber mica see phlogopite Ambittle Island geochemistry 12(3) 173-186 amphibole group see...magmas 15(4) 281-293 metamorphic rocks 2( 1) 67-81 Norway geochemistry 30(2) 167-189; 32( 1-2) 2145 igneous |  | | Journal (article/letter/editorial) | | leading to the formation ofaegirine, riebeckite, arfvedsonite, etc., and (2) silica-undersaturation producing...example, the classical alkalic complex of Oslo in Norway contains not only aegirinebearing and nepheline-bearing...volcanic associations of St. Helena Island (Baker, 1969) and G o u g h Island (LeMaitre, 1962). FeO* means total...whether Kennedy-trend associations occur in typical island-arc (orogenic) environments and in continental...Easter Island in the Pacific (Baker et al., 1974; Bonatti et al., 1977), and Ascension Island in the |  | | Report (volume) | | Geochemistry of ocean island basalts from the South Atlantic: Ascension, Bouvet, St. Helena, Gough and...lavas and associated granite xenoliths of Ascension Island 269 FITTON, J. G. The Cameroon line, West Africa:...very rare and not so clearly defined as in ocean island chains, probably because the continental lithosphere...deep mantle plumes as suggested for the Hawaiian island chain (Clague). The entire convecting upper mantle...produces MORB (Fitton). Geochemical studies on ocean island basalts from the South Atlantic Introduction |  | | Journal (article/letter/editorial) | | volcanic activity, both in continental and oceanic island environments. The Nandewar Volcano in north-eastern...all rhyolitic types. The comendites contain arfvedsonite + acmitic pyroxene in addition to quartz and...suites, e.g. Gough Island (Le Maitre, 1962), Socorro Island (Bryan, 1964), Mayor Island (Ewart et al., 1968)...of association in both continental and oceanic island environments indicates genetic controls independent...1968. Geochemistry of the pantellerites of Mayor Island, New Zealand. Contr. Miner. Petrol. 17, 116-40 |  | Caroff, M., Maury, R.C., Leterrier, J., Joron, J.L., Cotten, J., Guille, G. (1993) Trace element behavior in the alkali basalt-comenditic trachyte series from Mururoa Atoll, French Polynesia. Lithos, 30 (1) 1-22 doi:10.1016/0024-4937(93)90002-t | Journal (article/letter/editorial) | | Tuamotu Archipelago. It belongs to a linear volcanic island chain extending from Pitcairn to Duke of Gloucester..., Carter, R.M. and Coobs, D.S., 1974. Pitcairn Island~another Pacific hot spot? Nature, 251: 679-682...recycled lithosphere as the mantle source of ocean island basalts from Southern Polynesia, Central Pacific...1988. Trace element evidence for the origin of island basalts: an example from the Austral Islands (French...Howie, R.A. and Walsh, J.N., 1981. Riebeckitic, arfvedsonite and aenigmatite from the Ailsa Craig microgranite |  | | Report (issue) | | closely connected with comenditic rocks. On Easter Island, for Nl INTRODUCTION PETROGENETIC IMPORTANCE OF...Foerstner (1881) for alkali rhyolites from the island of Pantelleria in the Mediterranean, and Washington...(1913), in a redescription of the rocks from the island, introduced the term "hyalopantellerite" for the...for alkali rhyolites from Le Comende, San Pietro Island, Sardinia. Both comendites and pantellerites from...the same minerals ± aegirine, riebeckite to arfvedsonite, biotite, and accessory minerals. Fayalite and |  | | Book | | y . '/. SILALI '\" .... ~ '" :\. 3" S~U:jH ISLAND \, :: :e;d~A:. K:. . 4" --......I' 0..' !...23, TE 6; 8 tholeiitic basalts (suite 4, Idjwi island, Lake Kivu), ME 10, TE 7; 9 transitional basalts...transitional basalts (suite 3, Quaternary, Idjwi island, L. Kivu); 17 melilitite (suite 1 B), sample VM234...Fields for MORB (Mid-Ocean Ridge Basalt), OIB (Ocean Island Basalt), kimberlites (KT 1 = group I; KT2 = group...(NHRL on Fig. 5) that includes MORB and OIB (Ocean Island Basalts). Instead, they occupy the same domain |  | | Book | | Arcs 7.2.1 Island Arc Magmatism 7.2.2 Continental Arc Magmatism 7.2.3 Structure of Island and Continental...2.4 Examples of Island and Continental Arcs 7.3 Petrographic Characteristics of Island and Continental...Continental Arc Rocks 7.3.1 Petrography of Island Arc Rocks 7.3.2 Petrography of Continental Arc Rocks 7.4 Geochemical...Arc Differentiation Trends 7.4.2 Comparison of Island and Continental Arc Magma Series 7.4.3 Comparison...magma chamber (light-colored rock), north central Norway 4.1 Diagram showing the behavior of compatible |  | | Book | | past tectonic environments (e.g. mid-ocean ridge, island arc) from the compositions of ancient igneous rocks;...subduction-related volcanic rocks is shown in Fig. 1.6. In many island arcs, the potassium content of volcanic rocks increases...0 tion 55 ssocia line a -alka calc Low-K (island 50 line o ass sociation arc tholeiite) as 60...tectonic environments on Earth (e.g. mid-ocean ridges, island arcs, back-arc basins, intraplate oceanic islands...basalt’ (often abbreviated to ‘MORB’) and ‘ocean-island basalt’ (OIB) being obvious examples. As we shall |  | | Book | | three categories: those of (1) ocean basins; (2) island arcs and continental margins; and (3) continents...underlie much of the inaccessible ocean floor. The island arcs and orogenic con¬ tinental margins are the...Hawaii Galapagos Reunion Comoro Islands Marion Island 2 5 4 1 1 Continental intraplate volcanism East...Geological map of the northern part of Macquarie Island (after Griffin and Varne 1980). 5 Igneous activity...crust may be seen above sea-level is Macquarie Island, situated 1100 kilometres south-west of New Zea¬ |  | | Book (volume) | | Atlantic Baker I. Introduction... .. . II. The Island Groups . . . ba A. Group 1. Mildly Alkaline to...by the actively volcanic Tristan da Cunha—Gough Island Group and its trace during sea-floor spreading...geophysical results and augmented by dredge hauls, island exploration, etc., have been predicated on the...stratigraphic test was drilled on the volcanic island of Santa Barbara. been drilled in the offshore...2-CST-1-BA. The well 2-SB-1-BA drilled on Santa Barbara Island on the Abrolhos bank penetrated lava layers related |  | | Report (issue) | | Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, Connecticut, New York, New Jersey, Pennsylvania...Corsica. Spain. Portugal. Azores. Spitzbergen. Norway. Sweden. Finland, Kola. Germany: Westphalia, Rhineland...many books on the geology of various suggests the Island of Rhodes rather than the State of regions, books...books of travel, and other volumes were Rhode Island. Warren's name root is adopted in V.. searched for...Proceedings ........................................ NORWAY. Geologisk Undersogelse, Publica.tions ...... |  | | Report (issue) | | and related rocks from Westland and Otago, South Island, New Zealand . Barbara A. Barreiro and Alan F....volcanism in oceanic and continental settings; Clarion Island versus the eastern Trans-Pecos magmatic province...seamounts, and transforms—but are also associated with island arcs and ophiolites. The following summary of symposium...carbonatites, lam¬ prophyres, and related rocks of South Island, New Zealand, had a mantle source that also experienced...Alkaline magmatism has been recognized increasingly in island arc settings. Perfit reported that alkalic rocks |  | | Book | | Dark-field micrograph of andesine, An 32 , from Kragem, Norway, imaged with (123) pair of e diffractions with...plagioclase occurs in charnockitic gneiss at Arendal, Norway (Parker 1974). 12.2 Luminescence General descriptions...feldspar 28 by PIXE method), Irvine (1974; Duke Island noritic complex, calcic plagioclase 10-19), Paster...ilmenite, and rutile in antiperthitic labradorite from Norway. However, Armbrustmacher and Banks (1974) reported...fragments. Terrestrial Rocks: oceanic basalts; a Bouvet triple junction (Dickey et al. 1977); b north-Atlantic |  | | Book | | Reunion Island 127 3.2.6. Geochemical and isotopic characteristics of oceanic volcanic 128 island basalts...continents grew by the accretion of oceanic plateaux and island arcs, so that a supercontinent became established...during geological time, whilst the source of oceanic island basalts is enriched in incompatible elements (Wilson...surface manifestations of Hawaii, Tahiti, Easter Island and Pitcairn; 2) beneath the African plate, correlating...negative gravity anomalies along the Indonesian island arcs and associated trenches. He assumed that the |  | | Book (edition) | | subfiles E and N. See symposia. Ada County Adak Island In central part of Aleutian SW of Alaska Peninsula...Australia Australia SA geosynclines Adelaide Island Off W coast of Antarctic Peninsula S of Cape Horn...Islands aegerine use aegirine Aegina Town and island in Saronic Gulf. BT Sterea Ellas Greece aegirine...waste disposal Agto Fishing settlement on small island in Davis Strait. BT Greenland Arctic region SA...BT Gulf of Mexico Alae Crater Kilauea volcano on island of Hawaii. BT Hawaii United States SA Kilauea |  | | Book (volume) | | .................................... IX. Heard Island ................................................................................. XI. Christmas Island .................................................joins to the west the Mid-Atlantic Ridge at the Bouvet Triple Junction (Sclater et al., 1976a) and to...Ocean is bounded by Australia and by the Indonesian Island Arc, which extends from Burma to the northwestern...to the east, beyond the longitude of Christmas Island, the Argo, Gascoyne, Cuvier, and Perth abyssal |  | | Book | | Benioff seismic zone heavy rare-earth elements island-arc tholeiite wt.% K 2 0 in a series at a silica...100Mg/(Mg + F e ) mid-ocean ridge basalt oceanic-island tholeiite primordial hot mantle plume dimensionless...fundamental styles. (1) Nesosilicates (Gr. nesos, an island), the S1O4 tetrahedra are not linked directly to...coalescing major shield volcanoes that have built up the island of Hawaii, diameter at sea level nearly 150 km...terrain could have had a dual origin: in the North Island of New Zealand, for example, it has been demonstrated |  | | Book (edition) | | U.S. BA United States NA Columbia Kentucky Adak Island In central part of Aleutian Islands SW of Alaska...Australia SA geosynclines SA Stuart Shelf Adelaide Island Off W coast of Antarctic Peninsula S of Cape Horn...Islands aegerine use aegirine Aegina Town and island in Saronic Gulf. BT Sterea Ellas BT Greece aegirine...international cooperation Agto Fishing settlement on small island in Davis Strait. BT Greenland BT Arctic region...Gulf of Mexico Alae Crater On Kilauea Volcano on island of Hawaii. Autoposting of broader terms to this |  | | Book | | 1972 ISBN 82 00 02253 6 Distribution offices NORWAY BLINDERN, OSLO 3 UNITED KINGDOM CANNON HOUSE, PARK...STATES BOX 142 BOSTON, MASS. 02113 Printed in Norway by Aas & Wahl, Oslo Foreword The important part...Alexander Island . 149 M. R. A. Thomson: Ammonite faunas of south¬ eastern Alexander Island and their...migration and tec¬ des Peninsula, King George Island, South Shet¬ tonic control of Upper Cenozoic volcanism...deposits from Bahia Chile [Discovery Bay], Greenwich Island, South Shetland Islands 75 O. Gonzalez-Ferran |  | | Book (volume) | | had banks and to be artifacts. Some ("Mayda Island, white and flat") were evidently icebergs far beyond...doming. Darwin's hypothesis of volcanic- lavas island erosion, subsidence, and coral-reef formation...progressions of the volcanism along mid-Pacific island/atoll chains. However, latest it (Hudson Can-...meager data on Most of the basis of seamount/island locations their age, as well as data consistent...for deficit in approximate away from Vening island arcs The were density to the continents. Thus |  | | Journal (volume) | | Scotland, A. Geieie Quaternary Carnivores found on the island of Malta: Excavation by Glaciers: Chamberlin on...XLII. Note on some Volcanic Rocks from Gough's Island, . South Atlantic by L. V. Pirsson 380 XLIII. Champlain(...Paleobotany of the Cretaceous Formation on Staten Island, A. Hollick: Organization of the Fossil Plants...Scotland. 13. Quaternary Carnivores found on the island of Malta. Until recently the known extinct Quaternary...by Brogger from the eleolite-syenite of southern Norway but among them will be found such species 16. |
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