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  • 1
    Electronic Resource
    Electronic Resource
    Rock Deformation in the Rim of the New Quebec Crater, Canada (1963)
    [s.l.] : Nature Publishing Group
    Nature 198 (1963), S. 80-80 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In the absence of this material, the most valuable field evidence bearing on the origin of the crater is provided by measuring the deflexions of sheeting planes and other structures of the rim rocks from their original attitudes. Most readily and accurately measured is the sheeting, which in the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/198080a0
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  • 2
    Electronic Resource
    Electronic Resource
    Rim Structure of the New Quebec Crater, Canada (1964)
    [s.l.] : Nature Publishing Group
    Nature 201 (1964), S. 385-385 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Epidote is common in the rim rocks, occurring as seams, diffuse patches, and large perfect crystals, but is rare or absent in similar rocks outside the rim. Sericite is abundant in the rim rocks, but is not found in rocks outside the rim. Impact origin for this crater was postulated 15 years ago2 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/201385a0
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  • 3
    Electronic Resource
    Electronic Resource
    Geochemistry of Some Large Canadian Craters (1968)
    [s.l.] : Nature Publishing Group
    Nature 218 (1968), S. 457-459 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Samples for analysis were selected from systematic collections made during detailed mapping. For the ''igneous" rocks we selected a suite covering the extremes of modal composition. Weathered or inclusion-rich specimens were avoided where possible, but for Carswell we selected specimens containing ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/218457a0
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  • 4
    Electronic Resource
    Electronic Resource
    Shock Metamorphism in the Carswell Circular Structure, Saskatchewan, Canada (1967)
    [s.l.] : Nature Publishing Group
    Nature 213 (1967), S. 56-57 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The Carswell structure (Fig. 1), centred near 58 24' N., 109 30' W., occurs in the flat-lying Athabaska sandstone of Proterozoic age. The Carswell dolomite is known as a "toroidal" inlier downfaulted several thousand feet into the Athabaska formation. An exposure of pre-Athabaska crystalline ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/213056a0
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  • 5
    Electronic Resource
    Electronic Resource
    New Canadian Cryptoexplosion Crater at Lake St Martin, Manitoba (1970)
    [s.l.] : Nature Publishing Group
    Nature 226 (1970), S. 839-841 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1. Geology of the Lake St Martin region. The geological data for this region are summarized and interpreted in Figs. 1 and 2. Although the data are quite inadequate to fix the structural details, they suggest a central core of crystalline Pre-Cambrian rocks, surrounded by a shallow annular ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/226839a0
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  • 6
    Electronic Resource
    Electronic Resource
    Mistastin Lake, Labrador: A New Canadian Crater (1968)
    [s.l.] : Nature Publishing Group
    Nature 220 (1968), S. 776-777 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The Mistastin Lake crater is unusual in three respects: (1) the volcanic apparatus is exposed with remarkable completeness; (2) the structure, as outlined by the volcanic feeders, is markedly elliptical rather than equant; (3) the structure is the second in Canada the approximate position of which ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/220776a0
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  • 7
    Electronic Resource
    Electronic Resource
    Carbonatite and Alkaline Igneous Rocks in the Brent Crater, Ontario (1967)
    [s.l.] : Nature Publishing Group
    Nature 215 (1967), S. 725-726 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] TABLE 1. AVERAGE COMPOSITION OR ROCK UNITS FROM THE BRENT CRATER, ONTARIO Ni Cr Co Zr Ba t'u Zn B Be V 115 43 735 800 7 420 10 1 10 51 18 4 210 450 2 370 0 47 28 16 650 512 11 127 10 2 25 12 320 360 55 9 6 〈10 545 762 7 98 10 ] 3 6 370 340 35 5 11 〈5 550 930 7 85 10 1 8 4 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/215725a0
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