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  • Articles  (65)
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  • 1
    Electronic Resource
    Electronic Resource
    Evidence for two discrete centres in Skye (1976)
    [s.l.] : Nature Publishing Group
    Nature 261 (1976), S. 218-220 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Bott and Tuson2 have reported a large gravity anomaly over the Skye centres of 50mgal above the regional value (Fig. 1b). They interpreted this as due to a conical mass of gabbro widening down to a depth of 15km, underlying all three centres and outcropping as the Cuillin, with the granitic Red ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/261218a0
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  • 2
    Electronic Resource
    Electronic Resource
    Mantle origin of Cordilleran granites (1977)
    [s.l.] : Nature Publishing Group
    Nature 265 (1977), S. 21-24 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ‘Granite’ batholiths of recent destructive margins have strontium isotopes inconsistent with crustal fusion. Associated enormous crustal thicknesses are produced without compressive shortening. These features necessitate accretion by vertical addition of predominantly mantle-derived ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/265021a0
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  • 3
    Electronic Resource
    Electronic Resource
    The production of granitic melts during ultrametamorphism (1970)
    Springer
    Contributions to mineralogy and petrology 28 (1970), S. 310-318 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Data concerning the occurrence and mineralogy of granitic rocks and migmatites indicate that granitic liquids are not generally water saturated and do not form on minimum melting curves. Experiments on the partial fusion of crustal materials containing water only in hydrated phases demonstrate that water undersaturated melts with compositional affinities to the granite family are produced at temperatures and pressures in accord with observations on the metamorphio state of migmatite terrains.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00388953
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  • 4
    Electronic Resource
    Electronic Resource
    Experimental studies concerning the genesis of the Nigerian younger granites (1973)
    Springer
    Contributions to mineralogy and petrology 40 (1973), S. 131-139 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Partial melting experiments on Nigerian charnockitic monzonite associated with migmatised gneisses provide consanguineous liquids from which the metaluminous and peraluminous younger granites may be derived. After 40–60% melting at 750–800° C the liquids are metaluminous with hastingsite-fayalite granite affinities. On cooling towards the granite system minimum these liquids can evolve into metaluminous hastingsite-biotite granite and peraluminous biotite granite compositions. These experiments show that partial melting of charnockitic monzonites cannot yield peralkaline liquids at the specified conditions (750–850° C). Syenitic rocks of this province may either reflect the action of late stage albitising fluids on residual charnockitic material after partial melt extraction or the collection of feldspar floated from a hastingsite-fayalite granite liquid.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00378170
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  • 5
    Electronic Resource
    Electronic Resource
    Periodic gravity changes at Poás volcano, Costa Rica (1984)
    [s.l.] : Nature Publishing Group
    Nature 311 (1984), S. 243-245 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Theoretical considerations8'14'15 may be used to describe mathematically the vertical and horizontal elastic deformation of the crust due to hydrostatic pressure changes associated with sub-volcanic magma movements. In gravitational terms, we may anticipate a cyclic sequence involving pre-eruptive ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/311243a0
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  • 6
    Electronic Resource
    Electronic Resource
    Pyroclastic sulphur eruption at Poás volcano, Costa Rica (1980)
    [s.l.] : Nature Publishing Group
    Nature 283 (1980), S. 754-756 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Poás volcano is a small composite volcano (height 2,700 m, basal diameter 20 km) with a deep central crater 1.5 km wide and 300 m deep, in the floor of which is a smaller crater 400 m in diameter containing a hot (50 °C) crater lake. Intermittent eruptions take place from one or more ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/283754a0
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  • 7
    Electronic Resource
    Electronic Resource
    Geochemical and geophysical evidence on the geothermal potential of Caledonian granites in Britain (1979)
    [s.l.] : Nature Publishing Group
    Nature 280 (1979), S. 129-131 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Table 1 Neutron activation analyses for important radiolments in the Cairngorm and Foyers granites K U Th Sample no. (%) (p.p.m.) (p.p.m.) Cairngorm 1 4.85 8.7 29 2 4.89 2.8 14 3 5.96 4.2 24 4 4.58 6.9 20 5 4.07 3.2 15 6 3.08 6.3 37 7 4.37 17.2 25 8 1.92 14.1 16 9 5.24 20.6 33 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/280129a0
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  • 8
    Electronic Resource
    Electronic Resource
    Basement heat flow and metalliferous mineralization in England and Wales (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 657-659 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Many examples of epigenetic metalliferous mineralization in central and northern England occur within a province now recognized to be characterized by high heat flow. Our analysis of this correlation leads us to conclude that Caledonian intrusive bodies, with high heat production and thermal ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/288657a0
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  • 9
    Electronic Resource
    Electronic Resource
    Geophysical constraints on structure and emplacement of Shap granite (1978)
    [s.l.] : Nature Publishing Group
    Nature 272 (1978), S. 526-528 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Figure la is a bouguer anomaly map of the intrusion prepared by levelling and measuring 66 gravity stations within and around the granite outcrop. The negative anomaly of 11 mgal is caused by the mass deficiency of the granite (density = 2.665 X 103 kg m3) compared with the country rocks (density = ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/272526a0
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  • 10
    Electronic Resource
    Electronic Resource
    Plate tectonics in the Arabian Pan-African? (1978)
    [s.l.] : Nature Publishing Group
    Nature 272 (1978), S. 210-210 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] DURING the past 15-20 years, students of African geology have recognised three important ancient cratonic shield areas in West and South Africa, containing Archaean and early Proterozoic rocks, separated by younger, later Proterozoic 'mobile belts'. Pan-African ages (500-650 Ma), extended back to ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/272210a0
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