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  • Full text of "Platinum-group elements (PGE) and Rhenium in ...

    Crusius J., Calvert S., Pedersen T., and Sage D. (1996) Rhenium and molybdenum enrichments in sediments as indicators of oxic, suboxic and sulfidic condidons of deposition. Earth Planet. Sci.

  • Rhenium and molybdenum enrichments in sediments as ...

    EISEVIER Earth and Planetary Science Letters 145 (1996) 65-78 EP'SL Rhenium and molybdenum enrichments in sediments as indicators of oxic, suboxic and sulfidic conditions of deposition John Crusius * , Stephen Calvert, Thomas Pedersen, David Sage Oceanography Building, Department of Earth and Ocean Sciences, University of British Columbia Vancouver.

  • Determination of the isotopic composition of molybdenum in ...

    SpringerLink. Search SpringerLink ... April 2007, Volume 45, Issue 4, pp 381–389 | Cite as. Determination of the isotopic composition of molybdenum in the bottom sediments of freshwater basins . Authors ... S. Calvert, T. Pedersen, and D. Sage, “Rhenium and Molybdenum Enrichments in Sediments as Indicators of Oxic, Suboxic and Sulphidic ...

  • Thomas Pedersen | University of Copenhagen - Academia.edu

    Thomas Pedersen, University of Copenhagen, Wireless Department, Department Member. Studies Wireless, Museum Education, and Museum. ... Rhenium and molybdenum enrichments in sediments as indicators of oxic, ... Rhenium and molybdenum enrichments in sediments as indicators of oxic, suboxic and sulfidic conditions of deposition more.

  • Geochemical Characterization of the Black Shale from the ...

    Calvert SE, Pedersen TF (1993) Geochemistry of recent oxic and anoxic marine sediments: implications for the geological record. Mar Geol, 113 (1–2), 67–88. [12] Crusius J, Calvert S, Pedersen T, Sage D (1996) Rhenium and molybdenum enrichments in sediments as indicators of oxic, suboxic and sulfidic conditions of deposition.

  • Unbioturbated Carbonaceous Shales in the Cretaceous ...

    Unbioturbated Carbonaceous Shales in the Cretaceous Western Interior Seaway Record Oxic Bottom ... S.E. Calvert, T.F. Pedersen, and D. Sage, 1996, Rhenium and Molybdenum Enrichments in Sediments as Indicators of Oxic, Suboxic and Anoxic Conditions of Deposition: Earth Planetary Science Letters, v. 145, p. 65-79. ...

  • From the Cover: Holocene dynamics of the Arctic's largest ...

    Nov 22, 2011· Holocene dynamics of the Arctic's largest ice shelf. ... Paleoproductivity indicators, including sediment pigment concentrations and TOC, ... Pedersen T, Sage D. Rhenium and molybdenum enrichments in sediments as indicators of oxic, suboxic and sulfidic conditions of deposition. Earth Planet Sci Lett.

  • Molybdenum Rhenium Alloy | AMERICAN ELEMENTS

    Rhenium's high melting point is exceeded only by those of tungsten and carbon. Rhenium is found in small amounts in gadolinite and molybdenite. It is usually extracted from the flue dusts of molybdenum smelters. The name Rhenium originates from the Latin word …

  • rhenium and molybdenum enrichments in sediments as ...

    EISEVIER Earth and Planetary Science Letters 145 (1996) 78 EP'SL Rhenium and molybdenum enrichments in sediments as indicators of oxic, suboxic and sulfidic conditions of deposition John Crusius * , Stephen Calvert, Thomas Pedersen, David Sage Oceanography Building, Department of Earth and Ocean Sciences, University of British Columbia Vancouver.

  • Molybdenum(III) chloride - Wikipedia

    Molybdenum(III) chloride is the inorganic compound with the formula MoCl 3. Synthesis and Structure. The chemical formula of molybdenum trichloride is MoCl 3. Molybdenum trichloride is synthesized by the reduction of molybdenum pentachloride with hydrogen.

  • Tom Pedersen - University of Guelph

    Researcher Profile Tom Pedersen. Job Title: Professor ... controls on the diagenetic mobility of trace metals in polluted and unpolluted coastal marine sediments. E-mail: ... S.E. Calvert, T.F. Pedersen and D. Sage (1996). Rhenium and molybdenum enrichments in sediments as indicators of oxic, suboxic and anoxic conditions of deposition. ...

  • CICLO BIOGEOQUIMICO DEL CARBONO PDF

    Enhanced trapping of molybdenum by sulfurized organic matter of marine origin as recorded by various Mesozoic formations. View Homework Help – Ciclo Biogeoquimico del oxigeno. Rhenium and molybdenum enrichments in sediments as indicators of oxic, suboxic, and sulfidic conditions of deposition. The MAX dual, 40k?

  • Biogeochemical Dynamics of Molybdenum in a Crater Lake ...

    Biogeochemical Dynamics of Molybdenum in a Crater Lake: Seasonal Impact and Long-Term Removal ... Pedersen, T. and Sage, D. (1996) Rhenium and Molybdenum Enrichments in Sediments as Indicators of Oxic, Suboxic, and Sulfidic Conditions of Deposition. ...

  • Early Jurassic Source Potential and Ocean Redox Conditions ...

    of ancient sediments. All three metals are soluble in O ... Algeo, T.J., Tribovillard, N. (2009): Environmental analysis of paleoceanographic systems based on molybdenum – uranium covariation, Chemical Geology, 268, 211-225. ... Pedersen, T., Sage, D. (1996): Rhenium and molybdenum enrichments in sediments as indicators of oxic, suboxic and ...

  • Why Mix Rhenium In Tungsten WireRhenium - grupporoyal.it

    Apr 01, 2019· These superalloys contain up to 40% of the total weight of a combination of other elements such as rhenium, chromium, cobalt, tungsten, tantalum, molybdenum, hafnium, titanium, and aluminum . The superalloy sector accounts for 80% rhenium use with an average annual rise in demand of 5% expected in the coming decades , .

  • Trirhenium nonachloride - Wikipedia

    Trirhenium nonachloride is a compound with the formula ReCl 3, sometimes also written Re 3 Cl 9.It is a dark red hygroscopic solid that is insoluble in ordinary solvents. The compound is important in the history of inorganic chemistry as an early example of a cluster compound with metal-metal bonds. It is used as a starting material for synthesis of other rhenium complexes.

  • A Whiff of Oxygen Before the Great Oxidation Event? | Science

    Sep 28, 2007· High-resolution chemostratigraphy reveals an episode of enrichment of the redox-sensitive transition metals molybdenum and rhenium in the late Archean Mount McRae Shale in Western Australia. Correlations with organic carbon indicate that these metals were derived from contemporaneous seawater. Rhenium/osmium geochronology demonstrates that the enrichment is a …

  • Phosphorus and trace-metal records during Cretaceous ...

    Rhenium and molybdenum enrichments in sediments as indicators of oxic, suboxic and sulfidic conditions of deposition.- Earth Planet Science Letter, Amsterdam, vol. 145, p. 65–78. Dean W.E., Gardner J.V. & Piper D.Z. .- Inorganic geochemical indicators of glacial – interglacial changes in productivity and anoxia of the California continental ...

  • (PDF) Rhenium and molybdenum enrichments in sediments as ...

    EPSL Earth and Planetary Science Letters 145 f 1996) 65-78 Rhenium and molybdenum enrichments in sediments as indicators of oxic, suboxic and sulfidic conditions of deposition John Crusius *, Stephen Calve& Thomas Pedersen, David Sage Oceanography Building.

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    Read "Rhenium and molybdenum enrichments in sediments as indicators of oxic, suboxic and sulfidic conditions of deposition, Earth and Planetary Science Letters" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

  • Geochemical Perspectives Letters - Geochemistry and ...

    Crusius, J., Calvert, S., Pedersen, T., Sage, D. (1996) Rhenium and molybdenum enrichments in sediments as indicators of oxic, suboxic and sulfidic conditions of deposition. Earth and Planetary Science Letters 145, 65-78. ). A Re/Mo ratio of about 0.005 wt./wt. separates samples deposited in suboxic concentrations (higher ratios) from those ...

  • Extremely Re-Rich Molybdenite from Porphyry Cu-Mo-Au ...

    It is among the most expensive metals and is used principally as a high-temperature super-alloy in jet engines. It is mainly obtained as a by-product of molybdenum and copper refinement from Cu–Mo porphyry and sediment-hosted deposits. Re-bearing molybdenite with >1 wt % Re is rare, but has been found in porphyry-style Cu–Mo deposits [1,2,3].

  • Rhenium-osmium geochronology and geochemistry of ... - CORE

    (1996). Rhenium and molybdenum enrichments in sediments as indicators of oxic, suboxic and sulfidic conditions of deposition. (2009). U-Pb and Re-Os geochronology of the Aptian/Albian and Cenomanian/Turonian stage boundaries: Implications for timescale calibration, osmium isotope seawater composition and Re-Os systematics in organic-rich sediments.

  • Oceanic molybdenum isotope fractionation: Diagenesis and ...

    Dec 19, 2002· [1] Isotopic analyses of dissolved molybdenum are presented for sediment pore waters from a reducing sedimentary basin and for fluids from a low‐temperature ridge flank hydrothermal system. δ 98/95 Mo in these fluids range from 0.8 to 3.5‰ (relative to a laboratory standard), demonstrating that marine sedimentary reactions significantly fractionate Mo isotopes.

  • A molybdenum isotope record of Eocene Thermal Maximum 2 ...

    A molybdenum isotope record of Eocene Thermal Maximum 2: Implications for global ocean redox during the early Eocene ... Relationship of δ 98/95 Mo to local redox indicators: (a) ... the concentration of Mo in seawater, which is linked to its seawater residence time, is directly reflected by Mo enrichments in euxinic sediments.

  • RHENIUM (7440-15-5, 22541-28-2) - Chemical Safety, Models ...

    Rhenium and molybdenum enrichments in sediments as indicators of oxic, suboxic and sulfidic conditions of deposition (Earth and Planetary Science Letters, 1996) Technetium and rhenium in chemistry and nuclear medicine (1990) Synthesis of ultra-incompressible superhard rhenium diboride at ambient pressure.

  • Phototrophic activity and redox condition in Lake Hamana ...

    Crusius J., Calvert S., Pedersen T. and Sage D. 1996. Rhenium and molybdenum enrichments in sediments as indicators of oxic, suboxic and sulfidic conditions of deposition. Earth Planet. Sci. Lett. 145: 65-78. Google Scholar

  • A 36 kyr geochemical record from the Sea of Japan of ...

    Abstract. Intervals of organic C- and carbonate-rich laminated sediments occur in the Sea of Japan with roughly the same frequency as temperature changes observed in Greenland ice cores, providing clear evidence of rapid oceanographic change during the past 36 kyr.

  • U.S. Geological Survey Open-File Report 00-306

    U.S. Geological Survey Open-File Report 00-306: Chapter 10 Trace Metals, Stable Isotopes, and Biogenic Silica from Cores Collected at Marion-Dufresne Site MD99-2209, Chesapeake Bay by John F. Bratton 1, Steven M. Colman 1, Pattie C. Baucom 1 and Robert R. Seal, II 2. Abstract

  • A model for uranium, rhenium, and molybdenum diagenesis in ...

    A model for uranium, rhenium, and molybdenum diagenesis in marine sediments based on results from coastal locations. ... J. Crusius, S. Calvert, T. Pedersen, D. SageRhenium and molybdenum enrichments in sediments as indicators of oxic, suboxic and sulfidic conditions of deposition.