 | Long, Xiaojun, van der Zwan, Froukje M., Geldmacher, Jörg, Hoernle, Kaj, Hauff, Folkmar, Garbe-Schönberg, C.-Dieter, Augustin, Nico (2020) Insights into the petrogenesis of an intraplate volcanic province: Sr-Nd-Pb-Hf isotope geochemistry of the Bathymetrists Seamount Province, eastern equatorial Atlantic. Chemical Geology, 544. 119599pp. doi:10.1016/j.chemgeo.2020.119599 | Journal (article/letter/editorial) |
| equatorial Atlantic) and from the neighboring Cape Verde 1 Journal Pre-proof Ridge (a topographic...in the South Atlantic and Cape Verde (southern islands) and Canary Islands in the North Atlantic. A mantle...shoulder of a fracture zone northwest of the BSP (Cape Verde Ridge, see Figure 1b). With this dataset, we... hotspots in the vicinity of the BSP are the Cape Verde (~860 km to the north), lP Canary (~2300 km...forms a steep topographic ro of high called Cape Verde Ridge (Figure 1b). -p Detailed bathymetric |
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| production rate of 36Cl on Fuerteventura, Canary Islands, Spain Platinum-group elements in mantle xenoliths...position and presence of basaltic lava flows the island of Fuerteventura was chosen by CRONUSEU to serve...36Cl calibration site. Young basalts from this island are analysed to better constrain scaling factors...into site specific production rates of 36Cl at the island of Fuerteventura. This will help in future to better...Chicoutimi, Canada (sjbarnes@uqac.ca) 5 University of Cape Town, South Africa (John.Gurney@minserv.co.za) 6 |
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| Washington DC 20015 1 Ocean island basalt (OIB) lavas from Mangaia, Cook Islands (Polynesia) exhibit an extreme...olivine-hosted sulfides from 20-million-year-old ocean island basalts from Mangaia (most extreme "33S measurement...hotspots. 805 Heavy metals of the Santiago Island (Cape Verde) topsoils CABRAL PINTO, M.M.S.123,*,...(*marinacp@ci.uc.pt) 3 University Jean Piaget, Santiago Island, Cape Verde 1 2 In this work we present maps of...Hg, Mn, Ni, Pb, V, Zn) in the soils of the Santiago Island and analyse their relationships with the geological |
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| Portugal (maria.gp.queiroz@azores.gov.pt) Terceira Island mafic lavas (< 30 ka), erupted from two main active... which dominates the western topography of the island. These mafic lavas present a significant elemental...for coeval lavas outcropping in the neighbouring islands of Pico and S. Miguel, the later also formed in...Rift) and, also, at the scale of an individual island. 1 Idaho State University, Pocatello ID (magntimo@isu...100’s of ppm U) and apparent long-term stability of opal make it the most favorable target for in ion microprobe |
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| WILLIAMS Geology and Petrology of the Galdpagos Islands Sr THE GEOLOGICAL OF AMERICA SOCIETY be GSA...or in Geology and Petrology of the Galdpagos Islands A. R. MCBIRNEY University of Oregon Eugene, Oregon...and show little evidence of differentiation. The islands were never connected to the mainland of South or... GEOLOGY OF THE AND PETROLOGY GALAPAGOS ISLANDS The Geological Society Memoir of America... 118 Geology and Petrology of the Galapagos Islands A. R. MCBIRNEY University of Oregon Eugene, |
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| Sardonyx 39 Agates, Sulfates, and Hydrates Agate, Opal, Chrysoprase, Crocidolite Gypsolite, Celestite,...materials expelled by a volcano in the Canary Islands. Crystalline Systems In the following pages we...by their reduced brilliance. aquamarine fire opal opal tourmaline Rocks DIFFERENT WAYS OF COMBINING...jewelry under various names: water opal when colorless, and fire opal when yellow, orange, or red. White...principal deposits nowadays are located in Australia. OPAL Because they are silicon hydrates, opals are included |
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| tectonic settings, from the the mid-ocean ridges, to island arcs and continetal magmatism. Verification attempts...derived from TobĂfera rocks that compose the Cerro Verde thrust sheet of the Fuegian hinterland. These data...we favor a depositional environment in a shallow island-arc/back-arc basin. Although most workers [1],...overprinted by gas-melt fractionation of Ra-Rn. For ocean island basalts to carry such a signature, source to surface...due to jarosite (J), gypsum (G), copiapite (C) and opal (O). Spectral features near 0.9, 1.4, 1.75-1.85 |
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| Saare Island (Estonia) USE Saaremaa Island (Estonia) Saaremaa Island (Estonia) UF Ezel Island (Estonia)...(Estonia) Oesel Island (Estonia) Osel Island (Estonia) Saare Island (Estonia) Saarenmaa Island (Estonia)...(Estonia) sala (Estonia) Sarema Island (Estonia) Somu BT —Estonia Saarinen House (Bloomfield Hills, Mich...Geog) cBF1572.S28j Sabaot proverbs USE Leeward Islands (West CQK495.G35] BT UF BT Palms NT — India...Nandi languages Saaser Vispa River (Switzerland) Islands Rivers (May Subd Geog) BT Kenya —Switzerland |
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| kind of 2 volcanism that occurs in the Hawaiian Islands or at Mount St. Helens. The mineral world Rather...gemstones are amber (an amorphous fossil resin) and opal (a mineral gel); these are described briefly in...Examples of these kinds of names are anglesite for the island of Anglesey off the coast of Wales, aragonite for...by W. Sacco) Plate 18. Multicolored, gem-quality opal from Virgin Valley, Nevada. Note the fabulous colors...metamorphosed. The ex¬ posure is in the 30,000 Island district of Georgian Bay, Ontario. (Photograph |
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| J.3 Centre for Minerals Research, University of Cape Town, South Africa (*megan.becker@uct.ac.z) 2 Dept...the strength is. 15 X-ray difraction study of opal-CT in siliceous rocks Naumkina, N.I., Ilicheva,...sedimentary rocks are composed by silica (quartz and opal-CT), aluminium silicates (clay minerals, feldspars...carbonates. The originality and specificity of the opal-CT (the amount and structure) are determining the...concrete products, etc. We present the results of the opal-CT study with a phase-structural (mineralogical) |
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| Editor-in-Chief Haraldur Sigurdsson University of Rhode Island, U.S.A. Associate Editors Bruce F. Houghton Institute...James D. L. White Claude Jaupart Seamounts and Island Building 383 Ralf Schmidt and Hans-Ulrich Schmincke...Yoshimoto Volcaniclastic Sedimentation around Island Arcs Manfred P. Hochstein and Patrick R. L. Browne...Scoria Cones and Tuff Rings 683 Seamounts and Island Building 383 Seismic Monitoring 1095 Sizes...Tsunamis 1005 Volcaniclastic Sedimentation Around Island Arcs Volcanism and Biotic Extinctions 627 1083 |
