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  • 1
    Monograph available for loan
    Monograph available for loan
    The evolution of the crystalline rocks (1976)
    London [u.a.] : Academic Press
    Details Availability
    Call number: G 7417 ; 10267 ; M 93.0226 ; G 7090
    Type of Medium: Monograph available for loan
    Pages: IX, 484 S. : graph. Darst.
    ISBN: 0120734508
    Location: Upper compact magazine
    Location: Upper compact magazine
    Location: Upper compact magazine
    Location: Upper compact magazine
    Branch Library: GFZ Library
    Branch Library: GFZ Library
    Branch Library: GFZ Library
    Branch Library: GFZ Library
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  • 2
    Electronic Resource
    Electronic Resource
    Isotopic Composition of Strontium in Carbonatites (1964)
    [s.l.] : Nature Publishing Group
    Nature 201 (1964), S. 599-599 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Obviously the Keshya problem will not be resolved with the present data and it would seem wise to postpone further speculation along such lines until we have knowledge of the isotopic composition of strontium in many more carbonate rocks, particularly those veins and vein-dykes not directly ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/201599a0
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  • 3
    Electronic Resource
    Electronic Resource
    Carbonatite in the tuffs of the West Eifel, Germany (1969)
    Springer
    Contributions to mineralogy and petrology 23 (1969), S. 136-139 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Newly-discovered carbonatitic fragments from the West Eifel are described in terms of their petrography and trace-element content.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00375175
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  • 4
    Electronic Resource
    Electronic Resource
    Sampling the deep Earth (1987)
    [s.l.] : Nature Publishing Group
    Nature 330 (1987), S. 706-706 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] TRADITIONALLY, the main concern of geology has been with the Earth's crust, constituting less than 1 per cent of the planet's volume. Most of the Earth (84 per cent) is made up of the underlying mantle, and in recent years there have been international efforts to explore its composition (as ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/330706a0
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  • 5
    Electronic Resource
    Electronic Resource
    Mantle metasomatism—continuing chemical change within the Earth (1982)
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 525-530 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Mantle fragments carried up from as deep as 200km by high-velocity eruptions show metasomatic introduction of volatile bearing minerals, before melting. The broad spatial and temporal distribution of alkaline magmatism shows that transfer of lithophile elements to the outer Earth by rising ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/296525a0
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  • 6
    Electronic Resource
    Electronic Resource
    African swells, magmatism and plate tectonics (1974)
    [s.l.] : Nature Publishing Group
    Nature 248 (1974), S. 267-268 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR,-Some of the 'flaws'1 in my lateral compression model2 seem to be matters of faith, for example, that the model is "at odds with modern global tectonics", whilst many (including the "petrological observations") are arguable matters of interpretation. One "flaw", apparently supported by data, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/248267c0
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  • 7
    Electronic Resource
    Electronic Resource
    Carbonate melt from the mantle in the volcanoes of south-east Zambia (1989)
    [s.l.] : Nature Publishing Group
    Nature 338 (1989), S. 415-418 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Volcanism in the Rufunsa region was approximately contemporaneous with the Chilwa Alkaline Province in Malawi (early Cretaceous, 135-105 Myr ago)7, and during the activity the three major centres were intruded by coarse-grained carbonatites, similar in all essentials to the classic intrusive ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/338415a0
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  • 8
    Electronic Resource
    Electronic Resource
    Eburru volcano: A re-appraisal of the previous sample population (1975)
    Springer
    Contributions to mineralogy and petrology 50 (1975), S. 47-48 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00385220
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  • 9
    Electronic Resource
    Electronic Resource
    Petrochemical variations among mildly peralkaline (comendite) obsidians from the oceans and continents (1970)
    Springer
    Contributions to mineralogy and petrology 28 (1970), S. 340-351 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Eleven new analyses and modes of comendite obsidians are presented, and compared with all available data on similar rocks. Most specimens are aphyric or contain only sparse phenocrysts, most commonly alkali feldspar. The oxides SiO2, Al2O3, Na2O and K2O total over ninety percent by weight in all analyses. Iron, as FeO, is the only other constituent rising above one percent by weight. When the analyses are projected into the system Na2O-K2O-Al2O3-SiO2, oceanic and continental samples group differently. Oceanic specimens have a compositional spread ranging from trachytic to the quartz-feldspar cotectic zone, consistent with derivation through a trachyte magma stem. Continental comendites show a strong correlation with the experimentally determined quartz-feldspar minima along a path of increasing peralkalinity. These differences presumably reflect the contrasting environments of magma generation, and suggest an origin by partial melting within the continental crust for the continental comendite obsidians.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00388955
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  • 10
    Electronic Resource
    Electronic Resource
    Coeruption of contrasting magmas and temporal variations in magma chemistry at Longonot volcano, central Kenya (1984)
    Springer
    Bulletin of volcanology 47 (1984), S. 849-873 
    Details
    ISSN: 1432-0819
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The Quaternary central volcano Longonot is situated on the floor of the Gregory Rift Valley, Kenya, at 0° 55′ S, 36° 25′ E. Although the majority of its products are lavas and pyroclastics of pantelleritic trachyte composition, small volumes of alkali basalt magma have been coerupted with pantelleritic trachyte magma to produce mixed lavas. These lavas were the first products following each of three caldera collapses and mark the start of three successive cycles of whole-rock chemical variation with time. For the first two mixed-lava eruptions identified, field, petrographic and mineralogical evidence suggests that the contrasting magmas comingled, and in places hybridized, during eruption. Whole-rock geochemistry requires the alkali basalt component to have been contaminated prior to coeruption with trachyte. Syenite is suggested as a possible contaminant of the basalt component in the last two mixed-lava eruptions. Field and whole-rock chemical evidence points to the trachyte magma chamber being underlain by a basalt magma root zone. Inputs of fresh basalt magma into the root zone may have initiated each pre-caldera pyroclastic event and subsequent caldera formation and may have also caused the trachyte magma to overturn and commence a fresh cycle of chemical evolution. Some of the hot, buoyant basalt magma was able to leak towards the surface up peripheral fractures where it was coerupted with the initial trachyte magma of each cycle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01952347
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