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  • American Institute of Physics  (18.219)
  • American Association for the Advancement of Science  (13.868)
  • Cambridge University Press  (3.736)
  • 1960-1964  (35.823)
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  • 1
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    The Gneisses of the Bartica Assemblage, British Guiana (1962)
    Cambridge University Press
    In:  Geological Magazine, 99 (02). pp. 164-172.
    Details
    Publikationsdatum: 2020-07-31
    Beschreibung: The results of an examination of one quarry within the gneisses of the Bartica Assemblage are described and the validity of these results throughout the whole of the Bartica Assemblage is discussed. The foliation and banding of the gneisses at Kereti Quarry are mainly the results of tectonism; concomitant metamorphism within the Amphibolite Facies was succeeded by a two-phase metasomatism involving successive additions of Na and K. These results appear valid throughout the Bartica Assemblage and it is further suggested that the main rock type distribution in the Bartica Assemblage is also controlled by tectonism.
    Materialart: Article , PeerReviewed
    Format: text
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  • 2
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    Porphyroblastic and augen gneisses in the Bartica Assemblage, British Guiana (1964)
    Cambridge University Press
    In:  Geological Magazine, 101 (6). pp. 541-547.
    Details
    Publikationsdatum: 2020-07-31
    Beschreibung: Textural differences in the occurrence of microcline define augen gneisses, subhedral porphyroblastic gneisses and euhedral porphyroblastic gneisses within the Bartica Assemblage, British Guiana. The introduction of microcline is metasomatic and the nature of the porphyroblasts appears to be a reflection of tectonic control during their development.
    Materialart: Article , PeerReviewed
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  • 3
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    Natural convection in a horizontal circular cylinder (1964)
    Cambridge University Press
    In:  Journal of Fluid Mechanics, 18 (03). pp. 409-437.
    Details
    Publikationsdatum: 2020-07-24
    Beschreibung: In this paper we examine the steady, two-dimensional convective motion which occurs in a horizontal circular cylinder whose wall is non-uniformly heated. One observes several qualitatively different physical phenomena depending on the wall temperature distribution and the value of the Rayleigh number. The low-Rayleigh-number behaviour for the single convective cell heated from below is related to the classical Rayleigh stability problem. The critical Rayleigh number for the single circular cell is approximately five times the value for Rayleigh's multi-celluar configuration. The flow which exhibits a nearly parabolic velocity profile near the critical Rayleigh number, gradually changes to a rigidly-rotating-core behaviour as the Rayleigh number increases. The speed of core rotation is a function of the Prandtl number, whereas the boundary-layer thickness is primarily a function of the Rayleigh number. When the heating is from side to side, the solution shows that as the Rayleigh number increases the core motion is progressively arrested leaving a narrow circulating band of fluid adjacent to the wall. An oblique heating produces a hybrid phenomenon, a low-Rayleigh-number behaviour which is characteristic of the sideways heating case and a high-Rayleigh-number interior motion characteristic of the bottom heating case. To determine the core motion in the high-Rayleigh-number limit, Batchelor's work concerning the uniqueness of incompressible, exactly steady, closed streamline flows with small viscosity is extended to include flows with small thermal conductivity.
    Materialart: Article , PeerReviewed
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  • 4
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    On the non-linear energy transfer in a gravity-wave spectrum Part 1. General theory (1962)
    Cambridge University Press
    In:  Journal of Fluid Mechanics, 12 (04). p. 481.
    Details
    Publikationsdatum: 2020-07-24
    Beschreibung: The energy flux in a finite-depth gravity-wave spectrum resulting from weak non-linear couplings between the spectral components is evaluated by means of a perturbation method. The fifth-order analysis yields a fourth-order effect comparable in magnitude to the generating and dissipating processes in wind-generated seas. The energy flux favours equidistribution of energy and vanishes in the limiting case of a white, isotropic spectrum. The influence on the equilibrium structure of fully developed wave spectra and on other phenomena in random seas is discussed briefly.
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  • 5
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    Speed of sound in sea water as a function of temperature, pressure, and salinity (1960)
    American Institute of Physics
    In:  Journal of the Acoustical Society of America, 32 (6). pp. 641-644.
    Details
    Publikationsdatum: 2020-07-16
    Beschreibung: Tables for the speed of sound in sea water are presented. These tables have been prepared from an empirical formula which was derived to fit measured sound‐speed data obtained over the temperature range −3°C to 30°C, the pressure range 1.033 kg/cm2 to 1000 kg/cm2, and the salinity range 33‰ to 37‰. The discrepancy of −3.0 m/sec found by Del Grosso at 1 atm., as compared to the tables of Kuwahara, is substantiated. In addition, the pressure coefficient of sound speed observed in the present work differs from that predicted by Kuwahara.
    Materialart: Article , PeerReviewed
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  • 6
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    Figure 1 of: Pelagic sediments (1961)
    American Association for the Advancement of Science
    In:  EPIC3New York, American Association for the Advancement of Science
    Details
    Publikationsdatum: 2016-01-07
    Repository-Name: EPIC Alfred Wegener Institut
    Materialart: PANGAEA Documentation , notRev
    Format: image/png
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  • 7
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    Strain Slip Cleavage in the Ordovician Sediments of Central Victoria (1964)
    Cambridge University Press
    Details
    Publikationsdatum: 1964-12-30
    Beschreibung: At a late stage of folding, strain slip cleavage was imposed on the pelitic sediments of the Ordovician greywacke-slate association in Central Victoria. The nature of the cleavage surfaces was controlled by the type of sediment in which they were developed. In the coarser siltstones, and in the interlaminated zone of oscillatory graded beds, they are second order shear zones. In the finer siltstones and slates they are thin continuous shear domains of the first order.
    Print ISSN: 0016-7568
    Digitale ISSN: 1469-5081
    Thema: Geologie und Paläontologie
    Publiziert von Cambridge University Press
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  • 8
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    The Stratigraphical Nomenclature of the Lower and Middle Jurassic Rocks of the Hebrides (1964)
    Cambridge University Press
    Details
    Publikationsdatum: 1964-12-30
    Beschreibung: The stratigraphy of the Lower and Middle Jurassic rocks of the Hebrides is briefly summarized, and the lithostratigraphical nomenclature reviewed. To replace the inappropriate name “Inferior Oolite” for the lower marine part of the Middle Jurassic a new name, Bearreraig Sandstone Series, is proposed. This series is defined, and the succession at the type section is summarized.
    Print ISSN: 0016-7568
    Digitale ISSN: 1469-5081
    Thema: Geologie und Paläontologie
    Publiziert von Cambridge University Press
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  • 9
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    Boudinage-type Structures at Sørfinnset, Gildeskaal, North Norway (1964)
    Cambridge University Press
    Details
    Publikationsdatum: 1964-12-30
    Beschreibung: A layer of massive and lineated hornblende-biotite-gneiss has fractured along ac-joints (perpendicular to the layering and b–lineation), at regular intervals along its lower surface in contact with a thin marble bed. The joints have been opened from below and the marble has penetrated upwards to form intrusive tongues caused by extremely plastic flow folding, as shown by the unbroken banding in the marble. The structure constitutes a variety of one-sided boudinage involving segmentation in the lowest metre or so of the hornblendic rock, while the extreme marble deformation is all accommodated in a few centimetres thickness. The structures must have developed at relatively high temperatures to allow contemporaneous segregation of quartz-feldspar pegmatite veins from the hornblendic rock, and of diopside reaction skarns at the marble junctions.
    Print ISSN: 0016-7568
    Digitale ISSN: 1469-5081
    Thema: Geologie und Paläontologie
    Publiziert von Cambridge University Press
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  • 10
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    Soviet Antarctic Expedition, Information Bulletin, English Edition. Vols. 1 and 2, Elsevier Publishing Company. Amsterdam, 1964. Price £8 10s. (1964)
    Cambridge University Press
    Details
    Publikationsdatum: 1964-12-30
    Print ISSN: 0016-7568
    Digitale ISSN: 1469-5081
    Thema: Geologie und Paläontologie
    Publiziert von Cambridge University Press
    Standort Signatur Erwartet Verfügbarkeit
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