 | | Book | | de Luxembourg With 106 Figures and 95 Tables =e in the text and on 8 Folders 1970 GEBRUDER BORNTRAEGER...character- ized, with scarce an exception, by vulcanism, and the yulcanological evolution, rock suites, geomorphological...intimate acquaintance with all the Atlantic islands, and there is every reason to believe this applies even...southern islands separate, for reasons given above, and no less to furnish a volume of reasonable magnitude...general, shown little interest, and indeed the American J.C. Branner and the Belgian, A. RENARD, are the |  | | Journal (article/letter/editorial) | | a m Geochemistry of Inaccessible Island volcanics R.A. ClifP, P.E. Baker b'~ and N.J. Mateer ~ ~Departmenl...30, 1989; revised and accepted April 8, 1991 ) ABSTRACT Clift; R.A., Baker, P.E. and Mateer, N.J., 1991...Geochemist~' of Inaccessible Island volcanics. ('hem. Geol., 92: 251-260. Inaccessible Island, part of the...the Tristan da Cunha group, is older than Tristan itself but younger than Nightingale. It comprises an...similar to but less alkaline than that of Tristan. ('heroical and isotopic analyses for a new suite of sixteen |  | | Journal (article/letter/editorial) | | 0022-3530/90 $3.00 Tristan da Cunha, South Atlantic: Geochemistry and Petrogenesis of a Basanite-Phonolite...Lava Series by ANTON P. LE ROEX 1 , R. A. CLIFF 2 AND B. J. I. ADAIR 1 1 Department of Geology, University...University of Leeds, Leeds, UK ABSTRACT The island of Tristan da Cunha, located at 37°S, 12°W in the South Atlantic...islands, the others being Nightingale and Inaccessible. Tristan da Cunha comprises a continuous series of...from ankaramitic basanite through phonotephrite and tephriphonolite to phonolite. Moderately porphyritic |  | Homrighausen, S., Hoernle, K., Hauff, F., Wartho, J.-A., van den Bogaard, P., Garbe-Schönberg, D. (2019) New age and geochemical data from the Walvis Ridge: The temporal and spatial diversity of South Atlantic intraplate volcanism and its possible origin. Geochimica et Cosmochimica Acta, 245. 16-34 doi:10.1016/j.gca.2018.09.002 | Journal (article/letter/editorial) | | Accepted Manuscript New age and geochemical data from the Walvis Ridge: The temporal and spatial diversity of...of South Atlantic intraplate volcanism and its possible origin S. Homrighausen, K. Hoernle, F. Hauff,...GarbeSchönberg, D., New age and geochemical data from the Walvis Ridge: The temporal and spatial diversity of...of South Atlantic intraplate volcanism and its possible origin, Geochimica et Cosmochimica Acta (2018)...manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published |  | Gibson, S.A., Thompson, R.N., Day, J.A., Humphris, S.E., Dickin, A.P. (2005) Melt-generation processes associated with the Tristan mantle plume: Constraints on the origin of EM-1. Earth and Planetary Science Letters, 237 (3) 744-767 doi:10.1016/j.epsl.2005.06.015 | Journal (article/letter/editorial) | | Earth and Planetary Science Letters 237 (2005) 744 – 767 www.elsevier.com/locate/epsl Melt-generation...Melt-generation processes associated with the Tristan mantle plume: Constraints on the origin of EM-1 S.A. Gibson...Road, Durham, DH1 3LE, UK c Department of Geology and Geophysics, Woods Hole Oceanographic Institution...(EM-1) component in ocean–island basalts (OIB, e.g., Kerguelen, Pitcairn and Walvis Ridge) has been attributed...alkali and tholeiitic basalts from the Walvis Ridge and Rio Grande Rise and b3 Ma basanites and basalts |  | | Journal (article/letter/editorial) | | 87 Potassium-argon ages from Tristan da Cunha, South Atlantic IAN MCDOUGALL & C. D. OLLIER Summary.... mainly lavas, from Tristan da Cunha range from 0.21+0.01 to 0.01 ±0.02 Ma, and confirm the youthfulness...the Mid Atlantic Ridge. 1. Introduction The Tristan da Cunha group of volcanic islands is situated about...at longitude 12° 17' W, latitude 37° 05' S. The island group lies near the southwestern extremity of the...Ridge where it merges with the Mid Atlantic Ridge, and is built upon oceanic crust of age approximately |  | | Journal (article/letter/editorial) | | 2089^2120 2010 doi:10.1093/petrology/egq050 Shona and Discovery Aseismic Ridge Systems, South Atlantic:...ANTON LE ROEX1*, CORNELIA CLASS2, JOHN O’CONNOR3 AND WILFRIED JOKAT4 1 DEPARTMENT OF GEOLOGICAL SCIENCES...Ridge^Meteor Rise^Agulhas Ridge^Cape Rise seamounts) and the Discovery Rise to the north have been argued...to represent the surface expressions of the Shona and Discovery mantle plumes, based on enriched samples...Mid-Atlantic Ridge, a single sample from Discovery Rise and tectonic reconstructions. Leg PS69 ANT XXIII/5 of |  | Peate, D. W., Hawkesworth, C. J., Mantovani, M. M. S., Rogers, N. W., Turner, S. P. (1999) Petrogenesis and Stratigraphy of the High-Ti/Y Urubici Magma Type in the Parana Flood Basalt Province and Implications for the Nature of 'Dupal'-Type Mantle in the South Atlantic Region. Journal of Petrology, 40 (3) 451-473 doi:10.1093/petroj/40.3.451 | Journal (article/letter/editorial) | | Petrogenesis and Stratigraphy of the HighTi/Y Urubici Magma Type in the Paraná Flood Basalt Province and Implications...HAWKESWORTH2, MARTA M. S. MANTOVANI3, NICK W. ROGERS2 AND SIMON P. TURNER2 1 DANISH LITHOSPHERE CENTRE, ØSTER...considered as a single entity: Urubici flood basalts and Walvis Ridge Site 525A basalts have a relatively...within originally lithospheric mantle, whereas the Tristan plume is a deep mantle upwelling. The high-Ti/Y...spatial extent, near the southeast Brazilian coast and in the northern Etendeka (Namibia). Urubici flows |  | Homrighausen, S., Hoernle, K., Geldmacher, J., Wartho, J.-A., Hauff, F., Portnyagin, M., Werner, R., van den Bogaard, P., Garbe-Schönberg, D. (2018) Unexpected HIMU-type late-stage volcanism on the Walvis Ridge. Earth and Planetary Science Letters, 492. 251-263 doi:10.1016/j.epsl.2018.03.049 | Journal (article/letter/editorial) | | Earth and Planetary Science Letters 492 (2018) 251–263 Contents lists available at ScienceDirect Earth...Earth and Planetary Science Letters www.elsevier.com/locate/epsl Unexpected HIMU-type late-stage volcanism...Germany V.I. Vernadsky Institute of Geochemistry and Analytical Chemistry, Kosygin St. 19, 119991 Moscow...Walvis Ridge late-stage volcanism trace elements and isotope geochemistry 40 Ar/39 Ar dating high 238...Volcanic activity at many oceanic volcanoes, ridges and plateaus often reawakens after hiatuses of up to |  | | Journal (article/letter/editorial) | | EPSL ELSEVIER Earth and Planetary Science Letters 144 (1996) 75-92 The relationship between the age...lithosphere and the composition of oceanic magmas: Constraints on partial melting, mantle sources and the thermal...basis of different proportions and chemical compositions of shield and post-shield magmas, three types...SiO, contents of primitive melts of most Pacific and Atlantic intraplate lavas show a regular decrease...average ratios of (Ce/Yb)N(=,hondrite_norma,,zed) and (Tb/Yb), with increasing age of the lithosphere imply |  | Comin-Chiaramonit, P., Cundari, A., Piccirillo, E.M., Gomes, C.B., Castorina, F., Censi, P., De Min, A., Marzoli, A., Speziale, S., Velazquez, V.F. (1997) Potassic and Sodic Igneous Rocks from Eastern Paraguay: their Origin from the Lithospheric Mantle and Genetic Relationships with the Associated Parana flood tholeiites. Journal of Petrology, 38 (4) 495-528 doi:10.1093/petroj/38.4.495 | Journal (article/letter/editorial) | | Potassic and Sodic Igneous Rocks from Eastern Paraguay: their Origin from the Lithospheric Mantle and Genetic...P. CENSI6, A. DE MIN3, A. MARZOLI3, S. SPEZIALE6 AND V. F. VELÁZQUEZ4 1 DIPARTIMENTO DI INGEGNERIA CHIMICA...Triassic sodic intrusions and lavas; (2) Early Cretaceous potassic igneous rocks and very scarce sodic lavas;...eastern Paraguay: (1) widespread potassic magmatism and SGF tholeiites (Early Cretaceous); (2) Asunción...proposed, i.e. basanite to phonolite and alkali basalt to trachyte and their intrusive analogues. The sodic |  | | Book (volume) | | THE OCEAN BASINS AND MARGINS Volume | The South Atlantic THE OCEAN BASINS AND MARGINS Volume 1:...The North Atlantic Volume 3: The Gulf of Mexico and the Caribbean Volume 4: The Mediterranean Volume...Ocean ‘THE OCEAN BASINS AND MARGINS, A. Edited by-AlanjE. M. Nairn and Francis G. Stehli Department...de Geociéncias e Astronomia and Centro de Pesquisas Geocronolégicas da Universidade de Sao Paulo, Brazil...Instituto de Geociéncias e Astronomia and Centro de Pesquisas Geocronolégicas da Universidade de Sao Paulo, Brazil |  | | Journal (article/letter/editorial) | | 1998 Isotope and Trace Element Geochemistry of Cretaceous Damaraland Lamprophyres and Carbonatites,...Plume–Lithosphere Interactions ANTON P. LE ROEX∗ AND RUTH LANYON† DEPARTMENT OF GEOLOGICAL SCIENCES, UNIVERSITY...ACCEPTED DECEMBER 12, 1997 Major and trace element and radiogenic and stable isotope data are reported...reported for Cretaceous lamprophyres and carbonatites associated with alkaline igneous complexes in Damaraland...emplaced as late-stage dykes, stocks and diatremes, include both alkaline and ultramafic varieties. Many of |  | | Journal (article/letter/editorial) | | geochemically distinct Low-Ti magma types (Gramado and Esmeralda) are distinguished within the flood basalt...abundances and ratios. Esmeralda magmas have lower Ce/Sm and ( 87Sr/X”Sr) i, and higher Ti/Zr and ?? Nd,than...contamination of an asthenosphere-derived melt with time, and instead it seems that the two magma types evolved...Gramado magmas are dominated by crustal assimilation and fractional crystallisation, geochemical features...magmas [low Ti/Y of < 300 and low Nb/La of <0.8, negative +,-values - - 3 and high (87Sr/8”Sr), 0.708-0 |  | Geldmacher, Jörg, Hoernle, Kaj, Klügel, Andreas, van den Bogaard, Paul, Bindeman, Ilya (2008) Geochemistry of a new enriched mantle type locality in the northern hemisphere: Implications for the origin of the EM-I source. Earth and Planetary Science Letters, 265 (1) 167-182 doi:10.1016/j.epsl.2007.10.001 | Journal (article/letter/editorial) | | Available online at www.sciencedirect.com Earth and Planetary Science Letters 265 (2008) 167 – 182 www...Abstract Late Cretaceous (66.2 ± 0.5 Ma amphibole and 66.7 ± 0.2 Ma phlogopite 40Ar/39Ar ages) nephelinitic...North Atlantic (34°N latitude) have trace element and Sr–Nd–Pb–Hf-isotope compositions similar to the Enriched...separates are mantle-like (δ18O = 5.6–5.8‰). Age and location of the isolated Godzilla Seamount, however...mid-ocean-ridge and ocean-island basalts, there is a systematic decrease of 207Pb/204Pb ratios (and Δ7/4) in |  | | Journal (article/letter/editorial) | | PAGES 2049–2081 2001 Early Cretaceous Basalt and Picrite Dykes of the Southern Etendeka Region, NW...NW Namibia: Windows into the Role of the Tristan Mantle Plume in Paraná–Etendeka Magmatism R. N. THOMPSON1∗...THOMPSON1∗, S. A. GIBSON2, A. P. DICKIN3 AND P. M. SMITH2 1 DEPARTMENT OF GEOLOGICAL SCIENCES, UNIVERSITY...initial 87Sr/86Sr >0·7032. Others show major- and trace-element, and Sr–Nd–Pb isotopic evidence of contamination...relationships. Ferropicrite and low-Ti dykes are consanguineous with lavas erupted at 133 and Extended dataset |  | | Journal (article/letter/editorial) | | Earth and Planetary Science Letters 235 (2005) 528 – 548 www.elsevier.com/locate/epsl Rhenium–osmium...of Oceanography, University of Rhode Island, Kingston, Rhode Island 02881, USA Received 15 September 2004;...Abstract We present 27 osmium isotopic analyses and Re–Os contents in MORB glasses from the South Atlantic...trace element and Sr, Nd and Pb isotope compositions. Os concentrations are very low and range from 1...1.37 to 12.47 ppt and Re concentrations range from to 0.44 to 2.13 ppb. The 187Os / 188Os ratios vary |  | | Journal (issue) | | PETROLOGY OF LORD HOWE ISLAND, PART i THE YOUNGER : VOLCANICS p. M. GAME BULLETIN OF THE BRITISH...LONDON : 1970 PART I PETROLOGY OF LORD HOWE ISLAND THE YOUNGER VOLCANICS : BY MALCOLM GAME PHILIP...corresponding to the Departments of the Museum, and an Historical series. Parts will appear at irregular...about three or become ready. four hundred pages, and will not necessarily be completed within one calendar... Price £2 5s. (£2.25) PETROLOGY OF LORD HOWE ISLAND PART I THE YOUNGER VOLCANICS : Bv P. M. GAME |  | | Book | | org/details/antarcticgeologyOOOOsymp ANTARCTIC GEOLOGY AND GEOPHYSICS SCANDINAVIAN UNIVERSITY BOOKS Universitetsforlaget...SCIENCES SERIES B - NUMBER I ANTARCTIC GEOLOGY AND GEOPHYSICS Edited by RAYMOND J. ADIE British Antarctic...Birmingham 15, England Symposium on Antarctic Geology and Solid Earth Geophysics, Oslo, 6-15 August 1970, organized...by the SCIENTIFIC COMMITTEE ON ANTARCTIC RESEARCH and sponsored by the INTERNATIONAL UNION OF GEOLOGICAL...represent a major contribu¬ tion to the geology and solid earth geophysical literature of Antarctica |  | Rapp, Robert P., Irifune, Tetsuo, Shimizu, Nobu, Nishiyama, Norimasa, Norman, Marc D., Inoue, Toru (2008) Subduction recycling of continental sediments and the origin of geochemically enriched reservoirs in the deep mantle. Earth and Planetary Science Letters, 271 (1) 14-23 doi:10.1016/j.epsl.2008.02.028 | Journal (article/letter/editorial) | | Earth and Planetary Science Letters 271 (2008) 14–23 Contents lists available at ScienceDirect Earth...Earth and Planetary Science Letters j o u r n a l h o m e p a g e : w w w. e l s ev i e r. c o m / l o c...l Subduction recycling of continental sediments and the origin of geochemically enriched reservoirs in...Matsuyama, 790-8577, Japan Department of Geology and Geophysics, Woods Hole Oceanographic Institution...Editor: R.W. Carlson Keywords: subduction zones ocean island basalts (OIB) K-hollandite continental sediments |  | | Journal (article/letter/editorial) | | University, TR-29000 Gümüşhane, Turkey c School of Earth and Space Sciences, Peking University, 100871 Beijing...Abstract Whole-rock geochemistry, Sr–Nd–Pb isotopes and K–Ar data are reported for alkaline samples collected...Turkey, in order to investigate their source and petrogenesis and geodynamic evaluation of the region. The...tephrite–tephriphonolite (feldspar and feldspathoid-bearing; Group B) and alkaline basalt–rhyolite (feldspathoid-free;...potassic in character. They show enrichment of LREE and LILE and depletion of HFSE, without a Eu anomaly in most |  | | Journal (article/letter/editorial) | | Yangtze Block and Tibetan Plateau with displaced, correlative units in northern Vietnam (Song Da zone). The...contains numerous world-class base metal deposits and is contemporaneous with the late Capitanian (w260...there are also ultramafic and silicic volcanic rocks and layered maficultramafic and silicic plutonic rocks...three nearly concentric zones (i.e. inner, middle and outer) which correspond to progressively thicker...paleomagnetic and geochronological evidence to an interval of 3 Ma. The presence of picritic rocks and thick |  | | Book (volume) | | net. VII. Fresh-water Algce. By W. WEST, F.L.S., and G. S. WEST, M.A., D.Sc., F.L.S. 3s. net. Vol. II...By R. KOEHLER. net. 5s. net. GEOLOGY Vol. I. and Tectonic Geology of South Victoria Land. E. DAVID...DAVID, C.M.G., F.R.S., M.A., Hon. D.Sc. (Oxon), and R. E. PRIESTLEY, F.G.S. With Short Notes on Palaeontology...Palaeontology by T. G. TAYLOR, B.A., B.E., B.Sc., and Professor E. H. GODDARD, D.Sc. Paper boards, 2 2s. Glaciology... E. DAVID and R. E. PRIESTLEY. Internal. Geol. Congress, Stockholm, 1910. Antarctica and Some of its |  | | Report (issue) | | AndrewRothrock, Robert Shuchman,W. TerryTucker,WilfordWeeks,and Dale I]4 SolarSystem Plasmas in SpaceandTime J.Burch...Woodworth,D. T. Pugh,J. G. DeRonde, R. G. Warrick, and J. Hannah (Eds.) 70 Synthesis of Results from ScientificDrillingin...D.E.Staylie, and ThomasHerring(Eds.) 73 Environmental Effectson SpacecraftPositioning and Trajectories(IUGG...A. VallanceJones(Ed.) 74 Evolution of the Earth and Planets (IUGG Volume 14) Phenomena (IUGG Volume...Volume 18) William L Newman, Andrei Gabrielov, and Donald L. Turcotte(Eds.) Waite,Jr. (Eds.) 85 The PolarOceansandTheir |  | | Journal (article/letter/editorial) | | at Mount Erebus, Ross Island, Antarctica by P. R. KYLE 1 , J. A. MOORE 1 , AND M. F. THIRLWALL 2 1 (Received...accepted 18 October 1991) ABSTRACT Mount Erebus, Ross Island, Antarctica, is an active, intraplate, alkaline...lavas range from basanite to anorthoclase phonolite, and are termed the Erebus lineage (EL). The lavas are...opaque oxides (Usp31_76), feldspar (An 72 _ u X and apatite. Rare earth element (REE) contents increase...(LaN/YbN = 14-20) and there are no significant Eu anomalies. 87Sr/86Sr is uniform and low (~O7030) throughout |
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