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  • Articles  (21)
  • 1985-1989  (21)
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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 335 (1988), S. 391-391 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-Your news columns reported a "scale of severity" to evaluate nuclear accidents, as proposed by the French Industry Minister Alan Madelin1. Mad-elm's scale is intended to allow a layman to appreciate the degrees of risk involved in designing large, risky projects, but has been criticized as ...
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    International journal of earth sciences 75 (1986), S. 501-510 
    ISSN: 1437-3262
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Geologische Rundschau 74 (1985), S. 181-213 
    ISSN: 1437-3262
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Description / Table of Contents: Abstract The Alpme-Himalayan-System consists, between the Carpathians and the Asiatic shores of the Pacific, of two independent, but largely superimposed orogenic complexes. The older complex, here called theCimmerides, formed between the early Carboniferous and the early Cretaceous by the destruction of Palaeo-Tethys, the original, eastwards-widening gulf of Pangaea between Laurasia and the Cimmerian Continent. The continental blocks of North and South China and Annamia, as well as a number of much smaller fragments also participated in its history. The younger one, here designated theAlpides, formed between the late Jurassic and the present by subduction of Neo-Tethys and, locally, by the collision with Eurasia of various fragments of the dispersed Gondwana-Land. Where the original width of the Cimmerian Continent had been small, the superposition of the Cimmerides by the Alpides was nearly complete and the recognition now of the former is therefore very difficult. In regions, where the width of continental pieces lying between the two orogenic complexes is large, both can be distinguished easily. The Cimmerides contain a multi-strand suture network along which ocean closure occured at different times. Cimmeride collisions also generated a vast field of cratonic deformations between the Dnyepr-Donets basin in southeastern Europe and eastern Siberia that is characterised by strike-slip faults, both extensional and compressional basins, and various kinds of 〉inversion〈 structures. Some of these structures nucleated on older ones and many also localised the later Alpide structures. This has given the impression of the existence of 〉autochthonous〈, long-lived structures, although every 〉reactivation〈 event was the result of entirely independent but similarly-orientated strain fields whose origins had little to do with the structures themselves. The Cimmerides seem to be a more complicated orogenic system than the Alpides, involving large 〉orogenic collages〈 probably containing numerous exotic blocks of Panthalassan origin and large areas of accretionary complexes on oceanic substratum, such as that of Songpan-Ganzi of China. The recognition of a 〉double〈 history of Tethys leads to a better understanding of the tectonics not only of the Tethyan area, but also of entire Eurasia.
    Abstract: Résumé Le système Alpes-Himalaya se compose, entre les Car-pathes et la côte pacifique de l'Asie, de deux complexes orogéniques indépendants l'un de l'autre, mais largement superposés l'un à l'autre. Le plus ancien complexe, appelé ici lesCimmérides, s'estformé entre le Carbonifère inférieur et le Crétacé inférieur lors de la disparition de la Paléo-Téthys, c'est-à-dire du golf équatorial Permo-Triassique de la Pangée compris entre la Laurasie et le Continent Cimmérien. Dans ce développement sont également impliqués les blocs continentaux de la Chine septentrionale, de la Chine méridionale, de l'Annamia, ainsi qu'un certain nombre de fragments beaucoup plus petits. Par ailleurs, le complexe plus récent, appelé ici lesAlpides, s'est formé entre le Jurassique supérieur et la période actuelle par la subduction de la Néo-Téthys et des collisions locales de morceaux épars du continent de Gondwana avec l'Eurasie. Là où la largeur initiale du continent cimmérien était faible, on trouve aujourd'hui une superposition complète des deux complexes orogéniques, ce qui rend très difficile la mise en évidence du système le plus ancien. Au contraire, là où des blocs continentaux importants séparent les deux orogènes, leur distinction est facile. Les Cimmérides sont caractérisées par un réseau de sutures multiples, témoin des fermetures océaniques qui se sont produites à différentes époques. Les collisions cimmérides ont également donné lieu à un vaste champ de déformations cratoniques entre le bassin du Dnieper-Donetz (Europe du Sud-Est) et la Sibérie orientale. Ces déformations consistent en décrochements, en bassins d'extension ou de compression et en inversions de divers styles. Certaines de ces structures ont pris naissance de manière posthume sur des structures antérieures, et bon nombre d'entre elles ont à leur tour influencé la localisation des structures des Alpides. Cet état de choses a pu faire croire à l'existence de structures »autochtones« jouant pendant de longues durées; en fait leurs réactivations sont l'efet de champs de déformations successifs, indépendants. l'un de l'autre, mais d'orientation commune, et dont l'origine n'a pas grand chose à voir avec les structures elles-mêmes. Les Cimmérides semblent comporter de gigantesques »collages« orogéniques et, de ce fait, sont plus compliquées que les Alpides. Ces collages orogéniques contiennent beaucoup de blocs exotiques d'origine panthalassique et de grands domaines de complexes d'accrétion sur fond océanique, tel le système Songpan-Ganzi en Chine. La mise en évidence d'une double histoire de la Téthys conduit à une meilleure connaissance de la tectonique non seulement du domaine téthysien, mais aussi de toute l'Eurasie.
    Notes: Zusammenfassung Das Alpen-Himalaja-System besteht, zwischen den Karpaten und der pazifischen Küste Asiens, aus zwei voneinander unabhängigen, aber einander weitgehend überlagernden orogenen Komplexen. Der hier Kimmeriden genannte ältere Komplex ist durch die Destruktion der Paläo-Tethys, des ursprünglichen, sich nach Osten erweiternden Pangäagolfes zwischen Laurasien und dem Kimmerischen Kontinent in einem Intervall zwischen dem Unterkarbon und Unterkreide entstanden. In seiner Geschichte sind auch die kontinentalen Blöcke von Nord- und Südchina und Annamia sowie eine Anzahl von viel kleineren Fragmenten beteiligt gewesen. Der jüngere, hier als Alpiden bezeichnet, ist durch die Subduktion der Neo-Tethys und örtliche Kollision verschiedener Teile des zersplitterten Gondwana-Landes mit Eurasien zwischen dem Oberjura und der Gegenwart zustandegekommen. Wo die ursprüngliche Breite des Kimmerischen Zwischenkontinents klein war, besteht heute eine fast vollständige Überlagerung der Kimmeriden durch die Alpiden, wobei die Erkennung der ersteren sehr erschwert ist. In Regionen, wo bedeutende Kontinentalstücke zwischen den beiden Orogenkomplexen vorkommen, sind sie leicht voneinander unterscheidbar. Die Kimmeriden enthalten ein geflochtenes Narbennetz, entlang welchem Ozeanschließung zu verschiedenen Zeiten stattfand. Die kimmeridischen Kollisionen haben auch ein ausgedehntes kratonisches Deformationsfeld zwischen dem Dnjepr-Donetz-Becken südöstlich Europas und dem östlichen Sibirien ins Leben gerufen, das durch Horizontalverschiebungen, Zerrungs- und Pressungsbecken und »Inversionen« verschiedenen Stils gekennzeichnet ist. Einige dieser Strukturen waren posthum in bezug auf ältere und viele haben die Platznahme späterer Strukturen der Alpiden stark beeinflußt. Diese Sachlage hat den Anschein langlebiger bodenständiger Strukturen erzeugt, was in der Tat der Ausdruck verschiedener, voneinander ganz unabhängiger, aber gleichorientierter Verformungsfelder zu sein scheint und mit den Strukturen selbst nicht viel zu tun hat. Die Kimmeriden scheinen gewaltige »orogenic Collages« zu enthalten und viel komplizierter als die Alpiden zu sein. Diese orogenen Collages enthalten viele exotische Blöcke panthalassischer Herkunft und große Areale von Akkretionskomplexen auf ozeanischem Boden, wie derjenige des Songpan-Ganzi-Systems in China. Die Erkennung einer »verdoppelten« Geschichte der Tethys führt uns zu einem verbesserten Verständnis der Tektonik nicht nur des Tethysraumes, sondern ganz Eurasiens.
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 318 (1985), S. 16-17 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] As the accompanying map shows, Asia consists of numerous continental and \ oceanic fragments stitched together by continental collisions. These not only enlarged the continent, but also disrupted , parts of it through collision-related rifting and strike-slip faulting, as may be seen in the current ...
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 322 (1986), S. 507-507 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] WITH 9.6 million km2 China covers nearly one-fifteenth of the world's land area and is the third largest country in the world. The geology of this vast portion of our planet is now being studied by some 70,000 geological personnel in China. Their results are reported regularly in some 50 Chinese ...
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 322 (1986), S. 679-679 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-Nechemia Meyers (Nature 321, 801; 1986) claims that visas had been denied by the Turkish Foreign Office to Israeli scientists seeking to take part in the Subcom-mission on Triassic Stratigraphy's field workshop (of whose organizing committee we are members) in Western Turkey between 14 and 23 ...
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 342 (1989), S. 27-28 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Geological Evolution of South-East Asia forms a connecting link between the two previous volumes in the Oxford Mono-graphs on Geology and Geophysics (The Geology of China, published in 1986, and Phanerozoic Earth History of Australia, 1984). It is a most welcome addition to the series, for it deals ...
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  • 8
    Publication Date: 1988-01-01
    Print ISSN: 0305-8719
    Electronic ISSN: 2041-4927
    Topics: Geosciences
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  • 9
    Publication Date: 1986-01-01
    Print ISSN: 0305-8719
    Electronic ISSN: 2041-4927
    Topics: Geosciences
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  • 10
    Publication Date: 1987-01-01
    Print ISSN: 0305-8719
    Electronic ISSN: 2041-4927
    Topics: Geosciences
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