| | Journal (article/letter/editorial) | de Paris 4, Place Jussieu, 75252 Paris Cedex 05, France Centre National de la Recherche Scientifique, UMR...UMR 6538 IFREMER, BP 70, 29280 PlouzanĂ©, France Centre National de la Recherche Scientifique, Laboratoire...GĂ©ochronologie, UniversitĂ© Paris-Sud, 91405 Orsay, France b c Received 24 November 2004; received in revised...dredged in 1999 on several seamounts of the CookâAustral volcanic chains in the Pacific Ocean. The new geochemical...geochemical results, together with published data on island samples, allow us to reveal a time evolution of | | VlastĂ©lic, I., Koga, K., Chauvel, C., Jacques, G., TĂ©louk, P. (2009) Survival of lithium isotopic heterogeneities in the mantle supported by HIMU-lavas from Rurutu Island, Austral Chain. Earth and Planetary Science Letters, 286 (3) 456-466 doi:10.1016/j.epsl.2009.07.013 | Journal (article/letter/editorial) | the mantle supported by HIMU-lavas from Rurutu Island, Austral Chain I. VlastĂ©lic a,â, K. Koga a, C. Chauvel...UMR 6524, 5 Rue Kessler, 63038 Clermont-Ferrand, France Laboratoire de GĂ©odynamique des ChaĂźnes Alpines...1381 rue de la Piscine, 38041 Grenoble cedex 9, France c Laboratoire des Sciences de la Terre, Ecole Normale...lithium isotopes diffusion ocean island basalts HIMU Rurutu island a b s t r a c t Thirty years ago...mid-ocean ridge basalts. This work focuses on Rurutu island, where both HIMU (20.88 b 206Pb/204Pb b 21.42) | | Hanyu, Takeshi, Dosso, Laure, Ishizuka, Osamu, Tani, Kenichiro, Hanan, Barry B., Adam, Claudia, Nakai, Shunâichi, Senda, Ryoko, Chang, Qing, Tatsumi, Yoshiyuki (2013) Geochemical diversity in submarine HIMU basalts from Austral Islands, French Polynesia. Contributions to Mineralogy and Petrology, 166 (5) 1285-1304 doi:10.1007/s00410-013-0926-x | Journal (article/letter/editorial) | diversity in submarine HIMU basalts from Austral Islands, French Polynesia Takeshi Hanyu âą Laure Dosso âą Osamu...manned submersible from Rurutu, Tubuai, and Raivavae in the Austral Islands in the South Pacific, where...element compositions are indistinguishable at each island. However, the variations in Pb, Sr, Nd, and Hf...Scientifique, UMR 6538, IFREMER, BP70, 29280 PlouzaneÌ, France O. Ishizuka Institute of Geology and Geoinformation...during reservoir formation. Keywords HIMU Ocean islands Submarine basalts Isotopes Recycled crust | | | Journal (article/letter/editorial) | MORB. The HIMU (Mangaia, Tubuai, Raivavae, and Rurutu) are characterized by Li isotopic ratios ranging...available for EM1 lava samples, e.g., Pitcairn Island, (+3.3 to +4.1â°, Chan et al., 2006) display MORB-like...studies of Mid Ocean Ridge Basalts (MORB), Ocean Island Basalts (OIB) and basalts from continental settings...2009). The origin of the magmatism in the Sardinia island still has been controversial. It was proposed that...mantle, comprising ancient gabbro formed by plagioclase accumulation. On the other hand, Lustrino et | | | Book | Dr. Roger Hekinian Keryunan, 29290 Saint Renan, France E-mail: hekinian@wanadoo.fr Prof. Peter Stoffers...volcanoes and was one of the main coordinators of the French project dedicated to the study of Intraplate Volcanism...indebted to the support from government agencies in France, Germany, the USA, Canada and England as well as...Recherche et Exploitation de la Mer (IFREMER) in Brest, France, Prof. P. Stoffers is Research Director at the...Observatoires Volcanologiques, Jussieu, in Paris, France. The volume âOceanic Hotspotsâ has also been made | | Herzberg, C., Cabral, R.A., Jackson, M.G., Vidito, C., Day, J.M.D., Hauri, E.H. (2014) Phantom Archean crust in Mangaia hotspot lavas and the meaning of heterogeneous mantle. Earth and Planetary Science Letters, 396. 97-106 doi:10.1016/j.epsl.2014.03.065 | Journal (article/letter/editorial) | c t Lavas from Mangaia in the CookâAustral island chain, Polynesia, deïŹne an HIMU (or high ÎŒ, where ÎŒ...U/204 Pb) global isotopic end-member among ocean island basalts (OIB) with the highest 206,207,208 Pb/204...Elsevier B.V. Lavas from the island of Mangaia, located in the Cook Islands, have the most radiogenic Pb...analytical methods and results Five lavas from the island of Mangaia were examined in this study, and they...variable proportions of olivine, clinopyroxene and plagioclase have been subtracted, 3) calculation of the compositions | | Caroff, Martial, Guillou, HervĂ©, Lamiaux, MichaĂ«l, Maury, RenĂ© C., Guille, GĂ©rard, Cotten, Joseph (1999) Assimilation of ocean crust by hawaiitic and mugearitic magmas: an example from Eiao (Marquesas) Lithos, 46 (2) 235-258 doi:10.1016/s0024-4937(98)00068-1 | Journal (article/letter/editorial) | Occidentale, 6, AĂenue Le Gorgeu, B.P. 809, 29285 Brest, France ÂŽ b Laboratoire des Sciences du climat et de lâEnĂironnement...Domaine du CNRS, Bat. Ë 12, 91198 Gif-sur-YĂette, France c Groupe Teledetection et Risques Sismiques, DASE... CEA, B.P.12, 91680 Bruyeres ÂŽÂŽ ÂŽ ` le Chatel, France Received 2 June 1998; accepted 15 October 1998...volcanic shield of Eiao island in the Marquesas archipelago, French Polynesia. These were continuously...Al 2 O 3 , Na 2 O and Sr, inferred to reflect plagioclase breakdown within the Eiao plumbing system. q | | | Journal (article/letter/editorial) | Re-Os isotope systematics of HIMU and EMII oceanic island basalts from the south Pacific Ocean Erik H. Hauri...systematics of 24 oceanic island basalts from the islands of Savaii, Tahaa, Rarotonga, Rurutu, Tubuai and Mangaia...signature. 187Os/186Os ratios in HIMU basalts from Rurutu, Tubuai and Mangaia range from 1.1159 to 1.2473...s i g n a t u r e s o f s o m e o c e a n i c islands have b e e n i n t e r p r e t e d as b ei n g...material mixed into the mantle sources of these islands [5-7]. Specifically, the EMIl signature of high | | | Journal (article/letter/editorial) | t e / e p s l Major element chemistry of ocean island basalts â Conditions of mantle melting and heterogeneity...December 2009 Editor: L. Stixrude Keywords: ocean island basalts major element chemistry lithosphereâasthenosphere...âreferenceâ ocean island basalts (OIBs) for 120 volcanic centers from 31 major island groups and constrain...two components are not evenly sampled by all the islands, suggesting a heterogeneous distribution of mantle...2009.11.027 There are clues from individual ocean island chains where isotopic variability has been seen | | LEGENDRE, C., MAURY, R. C., CAROFF, M., GUILLOU, H., COTTEN, J., CHAUVEL, C., BOLLINGER, C., HĂMOND, C., GUILLE, G., BLAIS, S., ROSSI, P., SAVANIER, D. (2005) Origin of Exceptionally Abundant Phonolites on Ua Pou Island (Marquesas, French Polynesia): Partial Melting of Basanites Followed by Crustal Contamination. Journal of Petrology, 46 (9) 1925-1962 doi:10.1093/petrology/egi043 | Journal (article/letter/editorial) | Exceptionally Abundant Phonolites on Ua Pou Island (Marquesas, French Polynesia): Partial Melting of Basanites Followed...AVENUE LE GORGEU, CS 93837, 29238 BREST CEDEX 3, FRANCE 2 LSCE/CEAâCNRS UMR 1572, DOMAINE DU CNRS, 12...GIF-SUR-YVETTE, FRANCE 3 LGCA, 1381 RUE DE LA PISCINE, BP 53, 38000 GRENOBLE, FRANCE 4 UMR 6538, IUEM...COPERNIC, 29280 PLOUZANEÌ, FRANCE 5 CEA/LDG, BP 12, 91680 BRUYEÌRES-LE-CHATEL, FRANCE 6 LABORATOIRE DE PEÌTROLOGIE...RENNES 1, 35042 RENNES, FRANCE 7 BRGM, BP 6009, 45060 ORLEÌANS CEDEX 2, FRANCE RECEIVED JULY 30, 2004; | | Miyazaki, Takashi, Hanyu, Takeshi, Kimura, Jun-Ichi, Senda, Ryoko, Vaglarov, Bogdan Stefanov, Chang, Qing, Hirahara, Yuka, Takahashi, Toshiro, Kawabata, Hiroshi, Sato, Tomoki (2018) Clinopyroxene and bulk rock SrâNdâHfâPb isotope compositions of Raivavae ocean island basalts: Does clinopyroxene record early stage magma chamber processes?. Chemical Geology, 482. 18-31 doi:10.1016/j.chemgeo.2017.12.015 | Journal (article/letter/editorial) | SrâNdâHfâPb isotope compositions of Raivavae ocean island basalts: Does clinopyroxene record early stage...SrâNdâHfâPb isotope compositions of Raivavae ocean island basalts: Does clinopyroxene record early stage...SrâNdâHfâPb isotope compositions of Raivavae ocean island basalts: Does clinopyroxene record early stage...rock powders from the basalt lavas on Raivavae Island in the South Pacific. These data allowed us to...SrâNdâHfâPb isotopes, Isotopic inhomogeneity, Raivavae Island AC CE PT E D MA NU SC RI PT the high-ÎŒ-type | | Chan, Lui-Heung, Lassiter, John C., Hauri, Erik H., Hart, Stanley R., Blusztajn, Jerzy (2009) Lithium isotope systematics of lavas from the CookâAustral Islands: Constraints on the origin of HIMU mantle. Earth and Planetary Science Letters, 277 (3) 433-442 doi:10.1016/j.epsl.2008.11.009 | Journal (article/letter/editorial) | isotope systematics of lavas from the CookâAustral Islands: Constraints on the origin of HIMU mantle Lui-Heung...lithium isotopes ocean island basalts HIMU enriched mantle CookâAustral Islands a b s t r a c t Radiogenic...Radiogenic isotope variations in lavas from the CookâAustral volcanic chain have delineated three distinct mantle...All rights reserved. 1. Introduction The CookâAustral volcanic chain is situated in a region known as...of radiogenic isotopic compositions. CookâAustral islands and seamounts were produced by multiple stages | | | Journal (article/letter/editorial) | to their mantle sources. In both ridge and ocean island settings, for example, erupted lavas are expected...amount of trace element and isotope data in ocean island basalts (OIB) suggests that enriched isotope signatures...isotope and incompatible element ratios in ocean island basalts (OIB) correspond closely to those of their...local scale, for example for basalts from one ocean island or ridge segment, is usually in form of approximately...ZOne) to explain the apparent convergence of ocean island basalt (OIB) trends in two or three dimensional | | | Journal (article/letter/editorial) | . 1 Research Papers Alkali diffusion in plagioclase feldspar B.J. Giletti and T.M. Shanahan . . ...Contrasting old and young volcanism in Rurutu Island, Austral chain C. Chauvel, W. McDonough, G. Guille... . . . U - T h isotope disequilibria and ocean island basalt generation in the Azores S. Turner, C. Hawkesworth.... . . . . . . Elemental U and Th variations in island arc rocks: implications for U-series isotopes C | | | Journal (article/letter/editorial) | Processes and Exhumation of Garnet, Spinel and Plagioclase Facies Mantle. 2nd Orogenic Lherzolite Conference...garnet peridotites from the Variscan Vosges Mts. (France) R. Altherr and A. Kalt . . . . . . . . . . . ...mantle: petrologic evidence from the Lherz massif, French Pyrenees A.B. Woodland, J. Kornprobst, E. McPherson...surface waters from the Ctzallier (Massif Central, France): implications for mixing processes in areas of...Crustal interaction during construction of ocean islands: P b - S r - N d - O isotope geochemistry of the | | Chauvet, François, Lapierre, Henriette, Maury, RenĂ© C., Bosch, Delphine, Basile, Christophe, Cotten, Joseph, Brunet, Pierre, Campillo, Sylvain (2011) Triassic alkaline magmatism of the Hawasina Nappes: Post-breakup melting of the Oman lithospheric mantle modified by the Permian Neotethyan Plume. Lithos, 122 (1) 122-136 doi:10.1016/j.lithos.2010.12.006 | Journal (article/letter/editorial) | la HoussiniĂšre, BP 92208, 44322 Nantes Cedex 3, France UniversitĂ© Joseph Fourier; CNRS-UMR 5025; Laboratoire...rue de la Piscine, 38400 Saint Martin d'HĂšres, France c UniversitĂ© EuropĂ©enne de Bretagne, UniversitĂ©...EuropĂ©en de la Mer, Place N. Copernic, 29280 PlouzanĂ©, France d UniversitĂ© de Montpellier II; CNRS; UMR 5243...Place E. Bataillon, 34095 Montpellier Cedex 05, France e UniversitĂ© Paul Sabatier; CNRS; UMR 5563 Laboratoire...Midi-PyrĂ©nĂ©es, 14 avenue E. Belin, 31400 Toulouse, France b a r t i c l e i n f o Article history: Received | | | Journal (article/letter/editorial) | 2016 part 2] T H E GEOLOGY OF T H E ~kUSTRAL ISLANDS. 291 9. The GEOLOGY of the AVSTRXL or T c ~ u............................................. IV. Rurutu .................................................Research Association, in so far as they relate to the Austral or Tubuai Group. This group (see map, fig. 1, p...143 ~ 26' W. and 154 ~ 48' W. I t includes seven islands, as well as several isolated rocks and shoals,...are parallel to the trend-lines in the Society Islands on the north, and the T u a m o t u Archipelago | | | Journal (article/letter/editorial) | from the Sicily Channel (Pantelleria and Linosa Islands, Southern Italy) Riccardo Avanzinelli â, Eleonora...associated with that of the Canary and/or Cape Verde Islands (CebriĂ and Lopez-Ruiz, 1995; Oyarzun et al., 1997;...occurred in the Sicily Channel outcropping in the islands of Pantelleria (e.g. Civetta et al., 1998) and...on basaltic samples from Pantelleria and Linosa Islands with the aim of discussing the isotopic and geochemical...comparison to those estimated for typical Ocean Island Basalts (OIBs), in order to evaluate the differences | | | Journal (article/letter/editorial) | data on Faial, S. Jorge and Terceira volcanic islands Anthony Hildenbrand a,b,â, Dominique Weis c, Pedro...GEOPS, UMR8148, Orsay, F-91405, France CNRS, Orsay, F-91405, France c PaciïŹc Center for Isotope and Geochemical...analyses on Terceira, S. Jorge and Faial volcanic islands, we evidence contrasted modes of melt generation...the N110 main structural direction on the three islands are signiïŹcantly more enriched in LILE and LREE...Paris-Sud, Laboratoire GEOPS, UMR8148, Orsay, F91405, France. Tel.: +33 1 69 15 67 42; fax: +33 1 69 15 48 91 | | | Journal (article/letter/editorial) | insights into the subcontinental mantle beneath the island; (3) their geographic position is critical as the...Sardinia â Corsica was in contact to that of southern France and Spain up to Oligocene time when a continental...volcanic cycle from about 28 â15 Ma developed in the island in response to subduction. This activity peaked...rocks occur also at Pantelleria, Linosa and Ustica islands (Rossi et al., 1996; Civetta et al., 1998). Enriched...magmatic activity occurs throughout the entire island (Fig. 1b) and is mainly represented by M. Lustrino | | Santos, Anderson C., Geraldes, Mauro C., Siebel, Wolfgang, Mendes, Julio, Bongiolo, Everton, Santos, Werlem H, Garrido, Thais C. V., Rodrigues, Sergio W. O. (2019) Pleistocene alkaline rocks of Martin Vaz volcano, South Atlantic: low-degree partial melts of a CO2-metasomatized mantle plume. International Geology Review, 61 (3) 296-313 doi:10.1080/00206814.2018.1425921 | Journal (article/letter/editorial) | and subvolcanic lithotypes from the Martin Vaz Island, located at the easternmost of this volcanic chain...nephelinite and phonolite, respectively. Like in Trindade Island, the nephelinitic volcanism in Martin Vaz may represent...chain of the Vitoria-Trindade ridge towards two islands in the easternmost part 1200 km away from the Brazilian...Properties of Magmas; Geochemical Modelling; Martin Vaz Island; Melanephelinites; Phonolites et al. 1994; Gibson...Alkaline Province. Atlantic Ocean crust. Ocean Island Basalts (OIBs) are usually enriched in incompatible | | Jackson, M.G., Shirey, S.B., Hauri, E.H., Kurz, M.D., Rizo, H. (2016) Peridotite xenoliths from the Polynesian Austral and Samoa hotspots: Implications for the destruction of ancient 187Os and 142Nd isotopic domains and the preservation of Hadean 129Xe in the modern convecting mantle. Geochimica et Cosmochimica Acta, 185. 21-43 doi:10.1016/j.gca.2016.02.011 | Journal (article/letter/editorial) | Manuscript Peridotite xenoliths from the Polynesian Austral and Samoa hotspots: Implications for the destruction... H., Peridotite xenoliths from the Polynesian Austral and Samoa hotspots: Implications for the destruction...13 14 Peridotite xenoliths from the Polynesian Austral and Samoa hotspots: Implications for the destruction...Samoan island of Savaiâi and 8 peridotite xenoliths from 6-10 17 myr old lavas from the Austral island...created at the 21 ridge. Savaiâi and Tubuai islands lie along a flow line in the Pacific plate, and | | | Journal (article/letter/editorial) | acid-leaching on the Pb-isotope systematics of ocean-island basalts Diane Hanano,* James s. scoates, anD Dominique...of weakly altered basalts from two major ocean islands (Hawaii and Kerguelen) was investigated using scanning...high-precision Pb-isotopic compositions of ocean-island basalts. To achieve the highest precision and accuracy...protocols. Keywords: Alteration minerals, ocean island basalts, Hawaii, Kerguelen, SEM, XRD, leaching...of weakly altered basalts from two major ocean-island volcanic systems (Hawaii and Kerguelen) based on | | Su, Ben-Xun, Zhang, Hong-Fu, Deloule, Etienne, Sakyi, Patrick Asamoah, Xiao, Yan, Tang, Yan-Jie, Hu, Yan, Ying, Ji-Feng, Liu, Ping-Ping (2012) Extremely high Li and low ÎŽ7Li signatures in the lithospheric mantle. Chemical Geology, 292. 149-157 doi:10.1016/j.chemgeo.2011.11.023 | Journal (article/letter/editorial) | CRPG, BP20, 54501 Vandoeuvre-Les-Nancy Cedex, France Department of Earth Science, University of Ghana...et al. 2009), while the Li contents of oceanic island basalts (OIB) and arc lavas are in the range of...more compatible in more albitic plagioclase than anorthitic plagioclase (Coogan, 2011). These results probably...isotope systematics of lavas from the CookâAustral Islands: constraints on the origin of HIMU mantle....determination of the partitioning of lithium between plagioclase crystals of different anorthite contents. Lithos | | KIEFFER, BRUNO, ARNDT, NICHOLAS, LAPIERRE, HENRIETTE, BASTIEN, FLORENCE, BOSCH, DELPHINE, PECHER, ARNAUD, YIRGU, GEZAHEGN, AYALEW, DEREJE, WEIS, DOMINIQUE, JERRAM, DOUGAL A., KELLER, FRANCINE, MEUGNIOT, CLAUDINE (2004) Flood and Shield Basalts from Ethiopia: Magmas from the African Superswell. Journal of Petrology, 45 (4) 793-834 doi:10.1093/petrology/egg112 | Journal (article/letter/editorial) | DE GE 1 FRANCE MONTPELLIER II, PLACE E. BATAILLON, 34095 MONTPELLIER CEDEX 05, FRANCE ISTEM, CC 066...Pacific that gave rise to the volcanic islands of French Polynesia. Melting in large hotter-than-average...sparsely phyric, and contain phenocrysts of plagioclase and clinopyroxene with or without olivine. Most...containing abundant and often large phenocrysts of plagioclase and olivine. Like the flood volcanics, the shield...Oregon State University, splits of separated plagioclase or glass, or whole-rock samples were loaded in |
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