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  • 1
    Monograph available for loan
    Monograph available for loan
    Mantle petrology : field observations and high pressure experimentation ; A tribute to Francis R.(Joe) Boyd (1999)
    Houston, TX : Geochemical Society
    Associated volumes
    Details Availability
    Call number: MR 22.94902
    In: Special publication / The Geochemical Society, 6
    Type of Medium: Monograph available for loan
    Pages: XII, 322 Seiten , Illustrationen, graphische Darstellungen
    ISBN: 0-941809-05-6
    Series Statement: Special publication / The Geochemical Society No. 6
    Language: English
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 2
    Monograph available for loan
    Monograph available for loan
    Thermodynamic data on oxides and silicates : an assessed data set based on thermochemistry and high pressure phase equilibrium (1993)
    Berlin [u.a.] : Springer
    Details Availability
    Call number: M 94.0386
    Type of Medium: Monograph available for loan
    Pages: VIII, 428 S , graph. Darst
    ISBN: 3540568980 , 0387568980 (U.S.)
    URL: http://www.gbv.de/dms/bowker/toc/9780387568980.pdf
    Language: English
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 3
    Electronic Resource
    Electronic Resource
    Experimental evidence that potassium is a substantial radioactive heat source in planetary cores (2003)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 423 (2003), S. 163-165 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The hypothesis that 40K may be a significant radioactive heat source in the Earth's core was proposed on theoretical grounds over three decades ago, but experiments have provided only ambiguous and contradictory evidence for the solubility of potassium in iron-rich alloys. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature01560
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  • 4
    Electronic Resource
    Electronic Resource
    Thermal expansivity, bulk modulus, and melting curve of H2O–ice VII to 20 GPa (1993)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 99 (1993), S. 5369-5373 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Equation of state properties of ice VII and fluid H2O at high pressures and temperatures have been studied experimentally from 6 to 20 GPa and 300–700 K. The techniques involve direct measurements of the unit-cell volume of the solid using synchrotron x-ray diffraction with an externally heated diamond–anvil cell. The pressure dependencies of the volume and bulk modulus of ice VII at room temperature are in good agreement with previous synchrotron x-ray studies. The thermal expansivity was determined as a function of pressure and the results fit to a newly proposed phenomenological relation and to a Mie–Grüneisen equation of state formalism. The onset of melting of ice VII was determined directly by x-ray diffraction at a series of pressures and found to be in accord with previous volumetric determinations. Thermodynamic calculations based on the new data are performed to evaluate the range of validity of previously proposed equations of state for fluid water derived from static and shock-wave compression experiments and from simulations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.465980
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  • 5
    Electronic Resource
    Electronic Resource
    Compressibility and Phase Transition Kinetics of Lanthanide-Doped Zircon (2005)
    Oxford, UK : Blackwell Science Inc
    Journal of the American Ceramic Society 88 (2005), S. 0 
    Details
    ISSN: 1551-2916
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The structure and compressibility of synthetic lanthanide-doped zircon (ZrSiO4 with a total of 2.0 mol% trivalent Gd, Dy, Er, Yb, and Y, charge-balanced by addition of P5+) were determined from static compression experiments to 25.9 GPa. The sample bulk modulus, KT0=189±1 GPa is 5% lower than KT0 for undoped zircon, and the sample transforms from the zircon to the scheelite structure above 22.6 GPa, 3 GPa greater than the transformation pressure in pure ZrSiO4. A simple model is presented linking compressibility with unit-cell volume for zircon-structured and scheelite-structured ABO4 compounds, allowing prediction of the compressibility of zircon-structured vanadates and phosphates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1551-2916.2005.00291.x
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  • 6
    Electronic Resource
    Electronic Resource
    The fate of subducted basaltic crust in the Earth's lower mantle (1999)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 397 (1999), S. 53-56 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The subduction of oceanic lithosphere into the Earth's deep interior is thought to drive convection and create chemical heterogeneity in the mantle. The oceanic lithosphere as a whole, however, might not subduct uniformly: the fate of basaltic crust may differ from that of the underlying ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/16225
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  • 7
    Electronic Resource
    Electronic Resource
    A thermochemical data base for phase equilibria in the system Fe-Mg-Si-O at high pressure and temperature (1986)
    Springer
    Physics and chemistry of minerals 13 (1986), S. 311-324 
    Details
    ISSN: 1432-2021
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Abstract A thermochemical data base for phases in the system Fe-Mg-Si-O at high pressures up to 300 kbar is established by supplementing the available calorimetric data with data calculated from experimental high pressure synthesis studies. Phases included in the data base are the SiO2 polymorphs, rock salt solid solutions (Fe-Mg-O), Fe2O3, Fe3O4, (Mg, Fe)2SiO4 olivine, spinel, modified spinel and (Mg, Fe)SiO3 perovskite and pyroxene. Phases not included are the MgSiO3-ilmenite and -garnet. Fe-Mg solution properties of olivine, spinel, perovskite and wustite (rock salt) are estimated. The wüstite solid solution has been modeled as a nonideal solution of three end members; FeO, FeO1.5 and MgO. The new data base is made consistent with most of the available information on high pressure phase studies. The data base is useful in generating phase diagrams of various different compositions for the purpose of planning new experiments and analysing existing phase synthesis data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00308348
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  • 8
    Electronic Resource
    Electronic Resource
    Optical Absorption Spectra of (Mg, Fe)SiO3 Silicate Perovskites (1994)
    Springer
    Physics and chemistry of minerals 20 (1994), S. 478-482 
    Details
    ISSN: 1432-2021
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Abstract Electronic absorption spectra have been measured at room temperature and pressure for polycrystalline samples of (Mg, Fe)SiO3 silicate perovskites synthesized by multi-anvil device. One strong near-infrared band at about 7000 cm-1 and several weak bands in the visible region were found. The near-infrared band at 7000 cm-1 is assigned to a spin-allowed transition of Fe2+ at the 8–12 coordinated site in perovskite. However, definite assignments of the weak bands in the visible region are difficult because of their low intensities and the scattering effect at the gain boundaries. Crystal field calculations for Fe2+ at different sites in perovskite have been carried out based on the crystal structure data. The results agree with the assignment of Fe2+ to the 8–12 coordinated site in perovskite. Crystal field stabilization energy of Fe2+ with coordination number of 8 in perovskite is 3332 cm-1 which is small compared to the octahedral site of magnesiowüstite (4320 cm-1), another important lower-mantle mineral.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00203217
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  • 9
    Electronic Resource
    Electronic Resource
    The Thermodynamics of Ordered Perovskites on the CaTiO3-FeTiO3 Join (1998)
    Springer
    Physics and chemistry of minerals 25 (1998), S. 591-596 
    Details
    ISSN: 1432-2021
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Abstract  The enthalpies of formation from ilmenite, FeTiO3, and perovskite, CaTiO3, of two intermediate ordered perovskite phases, CaFeTi2O6 and CaFe3Ti4O12, have been measured at 801°C using oxide melt solution calorimetry. These data, in combination with experiments at high pressure and temperature, indicate that below 1518±50°C CaFe3Ti4O12 is stable at lower pressures (∼7 GPa at 1200°C) than CaFeTi2O6 (∼13 GPa at 1200°C). This relationship should be reversed, and CaFeTi2O6 should become stable at lower pressures than CaFe3Ti4O12, at temperatures above 1518±50°C. These intermediate phases are of petrological interest because they form as a reaction between two minerals, ilmenite and perovskite, which are commonly associated in kimberlites, and because their pressure-temperature range of formation overlaps that of origin of kimberlites.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002690050152
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  • 10
    Electronic Resource
    Electronic Resource
    P-V-T equation of state of magnesiowüstite (Mg0.6Fe0.4)O (1992)
    Springer
    Physics and chemistry of minerals 18 (1992), S. 416-422 
    Details
    ISSN: 1432-2021
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Abstract The lattice parameter of magnesiowüstite (Mg0.6Fe0.4)O has been measured up to a pressure of 30 GPa and a temperature of 800 K, using an external heated diamond anvil cell and diffraction using X-rays from a synchrotron source. The experiments were conducted under quasi-hydrostatic condition, using neon as a pressure transmitting medium. The experimental P-V-T data were fitted to a thermal-pressure model with the isothermal bulk modulus at room temperature K T0 = 157 GPa, (∇K TO /∇P) T =4, (∇K T /∇T) P =-2.7(3) × 10-2 GPa/K, (∇K T /∇T) v =-0.2(2) × 10-2 GPa/K and the Anderson-Grüneisen parameter δ T =4.3(5) above the Debye temperature. The data were also fitted to the Mie-Grüneisen thermal equation of state. The least-squares fit yields the Debye temperature θ DO = 500(20) K, the Grüneisen parameter γ 0=1.50(5), and the volume dependence q=1.1(5). Both thermal-pressure models give consistent P-V-T relations for magnesiowüstite to 140 GPa and 4000 K. The P-V-T relations for magnesiowüstite were also calculate by using a modified high-temperature Birch-Murnaghan equation of state with a δ t of 4.3. The results are consistent with those calculated by using the thermal-pressure model and the Mie-Grüneisen relation to 140 GPa and 3000 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00200964
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