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  • 1
    Monograph available for loan
    Monograph available for loan
    Anelasticity in the earth (1981)
    Washington, DC : American Geophysical Union
    Associated volumes
    Details Availability
    Call number: 4/M 92.1327/4 ; MR 90.0955
    In: Geodynamics series
    Type of Medium: Monograph available for loan
    Pages: 122 S.
    ISBN: 0875905056
    Series Statement: Geodynamics series 4
    Classification:
    Petrophysics
    Language: English
    Location: Reading room
    Location: Upper compact magazine
    Branch Library: GFZ Library
    Branch Library: GFZ Library
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  • 2
    Electronic Resource
    Electronic Resource
    Magnetic anisotropy and fabric of some foliated rocks from S.E. Australia (1960)
    Springer
    Pure and applied geophysics 47 (1960), S. 30-40 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The magnetic anisotropy of foliated rocks of several types has been measured by the torque-meter method, and shows that the alignment of long axes of magnetic grains in rocks normally follows the pattern of foliation evident in field observations. In a sharp fold in a lit-par-lit formation the magnetic anisotropy indicated an otherwise undetected lineation independent of the bedding and superimposed upon the foliation determined by the layering. In two adamellites, each with two alignment patterns separated by an angle of 30° the magnetic data are shown to be consistent with two foliations but not with one foliation plus a lineation. Magnetic anisotropy data can be ambiguous for rocks in which two or more grain alignment processes have operated, but combined with other observations magnetic measurements can provide a valuable new tool in the study of rock fabrics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01992481
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  • 3
    Electronic Resource
    Electronic Resource
    Dielectric anisotropy and fabric of rocks (1961)
    Springer
    Pure and applied geophysics 48 (1961), S. 40-48 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary Measurements have been made of the dieletric anisotropies of a number of rocks for which magnetic anisotropy data have been obtained previously. The purpose was to examine the possible usefulness of dielectric anisotropy as a physical property indicative of rock fabrics. Its advantage over the magnetic method is that it measures an average alignment of crystals of the dominant minerals, whereas magnetic anisotropy is due only to the ferromagnetic grains. Disadvantages are an extreme sensitivity to specimen shape and difficulty in distinguishing the several types of alignment which can give rise to dielectric anisotropy. In a number of strongly foliated rocks the axes of dielectric anisotropy were found to coincide with the axes of magnetic anisotropy. Specimens from a magnesian-pyroxene rich layer in a Tasmanian dolerite sill and from the olivine rich layer of the Palisades dolerite sill, New York, were found to have no systematic anisotropy. The pyroxenes in the Tasmanian dolerite are elongated crystals (about 2: 1) so that the dielectric measurements show that they do not have a preferred horizontal alignment and therefore have probably not settled as individual crystals. Most of the olivines in the Palisades dolerite are more nearly equidimensional so that the absence of measurable anisotropy in this rock is less conclusive evidence against crystal settling.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01992367
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  • 4
    Electronic Resource
    Electronic Resource
    Possibility of a 26- or 27-Month Periodicity in the Equatorial Geomagnetic Field and its Correlation with Stratospheric Winds (1962)
    [s.l.] : Nature Publishing Group
    Nature 196 (1962), S. 730-732 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SEVERAL authors1-4 have analysed data on J stratospheric winds obtained by equatorial meteorological stations in recent years. They found striking evidence of a periodic recurrence of westerly winds encircling the equator. The main features are: (1) the fluctuation is confined to the stratosphere ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/196730a0
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  • 5
    Electronic Resource
    Electronic Resource
    Magnetostriction and Palæomagnetism of Igneous Rocks (1959)
    [s.l.] : Nature Publishing Group
    Nature 183 (1959), S. 384-385 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Presumptive evidence for such magnetostrictive effects has been given by Graham, Buddington and Balsley3, who subjected a number of metamorphic rocks to linear compressions of 250 kgm./cm.2 without heating and found reversible deflexions of up to 30 in the directions of magnetization. (It may be ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/183384b0
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  • 6
    Electronic Resource
    Electronic Resource
    Natural Magnetic Moments of Two Chondritic Meteorites (1959)
    [s.l.] : Nature Publishing Group
    Nature 183 (1959), S. 529-530 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We have found substantial natural magnetic moments in the three chondrites which have been examined and have used two of them (Homestead and Mount Browne) in thermal demagnetization experiments to obtain information about the origin of their moments. The Homestead meteorite is a polymict, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/183529a0
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  • 7
    Electronic Resource
    Electronic Resource
    Stress Effects on Thermoremanent Magnetization (1961)
    [s.l.] : Nature Publishing Group
    Nature 191 (1961), S. 585-586 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In an igneous rock which is cooled under stress in a small magnetic field and then released from the stress, the direction of thermoremanent magnetization differs from the field direction by an angle which is controlled both by the stress and by the intrinsic anisotropy of the rock, but if the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/191585a0
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  • 8
    Electronic Resource
    Electronic Resource
    A New Mechanism for Convection in the Mantle and Continental Accretion (1963)
    [s.l.] : Nature Publishing Group
    Nature 197 (1963), S. 582-583 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Ringwood3 has summarized the evidence for the existence in solution in the core of 10-20 per cent silicon and pointed out that this metallic silicon would react with iron oxide in the bottom layers of the mantle. Further, there is seismic evidence4 for a light layer approximately 200 km thick at ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/197582a0
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  • 9
    Electronic Resource
    Electronic Resource
    Convecting Mantle as a Thermodynamic Engine (1967)
    [s.l.] : Nature Publishing Group
    Nature 214 (1967), S. 476-477 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Elastic strains released in earthquakes appear to be independent of magnitude3 and suggest that the upper mantle may support a stress of about 100 kg cmr2, but no more. We may therefore take this value as a good estimate of the order of magnitude of the strength of the tectonic regions of the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/214476a0
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  • 10
    Electronic Resource
    Electronic Resource
    Possible New Evidence bearing on the Lunar Capture Hypothesis (1967)
    [s.l.] : Nature Publishing Group
    Nature 215 (1967), S. 1256-1256 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] During the close approach, dissipation of tidal energy within the solid part of the Earth would have been intense, greater than the dissipation by marine tides, and certainly sufficient to cause extensive partial melting in the mantle. Once the mantle had been fluidized by partial melting, however, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2151256a0
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