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  • 2015-2019  (20)
  • 1965-1969  (8)
  • 1925-1929  (5)
  • 1
    Publication Date: 2021-04-27
    Description: Eine Faziesrekonstruktion W1d Korrelation obersinischer-unterkambrischer Schichten der Yangtze-Plattform (Südchina) wird vorgestellt. Dabei wird zwischen geschütztem Becken, Schwelle W1d tiefem Becken unterschieden. Die unterkambrische Schwarzschiefer-Transgression, der "Badaowan" Event, wird als diachron gekennzeichnet. Nach Untersuchungen der Lithologie W1d Geochemie der unterkambrischen Sedimente, vorwiegend Schwarzschiefer des Profils Sansha (nahe Dayong. N-Hunan), kann zwischen Sedimenten, die unter teilweise anoxischen Bedingungen oder im stagnierenden Becken abgelagert wurden, unterschieden werden. Schwammnadeln sind im untersten Unterkambrium Zentralchinas weit verbreitet. Neufimde vollständiger hexactinellider Schwämme Sanshadictya microreticulata gen. et sp. 0., Hyalosinica archaica gen. et sp.o., Triticispongia diagonata gen. et sp. n., Solactiniella plumata gen. et sp. 0., Hunanospongia sp. QIAN & DING, 1988, Hexactinellida indet., eines fraglichen vertreters der Demospongiae, Saetaspongia densa gen. et sp. 0. sowie eines Vertreters der Malacostraca Perspicaris sp., W1d einer unbenannten A1genfonn, werden vorgestellt. Schwammnadeln wurden ebenfalls neu in Gesteinen des Shibantan Mb. (Dengying Fm., Ob. Proterozoikum) vom Straßenaufschluß Liantuo (nahe Yichang. S-Hubei) gefunden. Die Fauna vorwiegend hexactinellider Schwämme von Sansha wird im Zusammenhang mit den taphonornisch AhnIichen Spongienfaunen des Red Hil1s Quarry (Mitteldevon, Nevada) und des Arnager Kalkes (Kreide, Bomholm) diskutiert.
    Description: A facies reconstruction and correlation ofUpper Sinian - Lower Cambrian strata ofthe Yangtze platform (South China) is presented. Protected basin, uplift and deep basin development may be distinguished. The Lower Cambrian black shale transgression, the "Badaowan" Event, is characterized as diachronous. As a result of these investigations of lithology and geochemistry of the Lower Cambrian sediments (mainly black shales ofthe Sansha section, near Dayong. N. Hunan), sediments deposited under partially anoxic conditions or in a stagnant basin have been recognized. Sponge spicules are widely distributed in the lowennost Lower Cambrian of CentraI China. Recently discovered more or less complete sponges, including Sanshadictya microreticulata gen. et sp. 0., Hyalosinica archaica gen. et sp. 0., Triticispongia diagonata gen. et sp. 0., Solactiniella plumata gen. et sp. 0., Hunanospongia sp. QIAN & DING, 1988, Hexactinellida indet., a questionable demosponge, Saetaspongia densa gen. et sp. 0., and the Malacostraca Perspicaris sp., and an unnamed a1ga are described. Sponge spicules additionally were found in rocks of the Shibantan Mb. (Dengying Fm., Upper Proterozoic) from the road section of Liantuo (near Yichang. S.Hubei province). The fauna ofmainly hexactinellid poriferans from Sansha is discussed with regard to the similar taphonomy ofthe sponge faunas from the Red Hills Quarry (MiddIe Devonian ofNevada) and from the Arnager Iirnestooe (Cretaceous, Bomholm).
    Keywords: Paläontologie: Allgemeines ; 551 ; VU 000 ; 38.20 ; 38.2
    Language: English
    Type: article , publishedVersion
    Format: application/pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 54 (1967), S. 370-371 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 55 (1968), S. 346-347 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Planta 79 (1968), S. 113-121 
    ISSN: 1432-2048
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung 1. 28 marine Algen aus den Klassen der Chlorophyceen (5 Arten), Phaeophyceen (11) und Rhodophyceen (12) wurden auf das Vorkommen flüchtiger Amine untersucht. 2. Mit Hilfe papierchromatographischer und mikrokristallographischer Methoden konnten insgesamt 9 flüchtige Amine in Algen nachgewiesen werden: Methylamin (MA), Dimethylamin (DMA), Trimethylamin (TMA), Äthylamin (ÄA), Propylamin (PA), Isobutylamin (iBA), Isoamylamin (iAA), 2-Phenyläthylamin (PÄA) und das bisher aus der Natur nicht bekannte 2-Methylmercaptopropylamin (MMPA). 3. Weitverbreitet findet sich bei Algen Trimethylamin (in 23 von 28 untersuchten Arten), während Dimethylamin nur in 2 Arten sicher nachgewiesen werden konnte. Das natürliche Vorkommen von Methylamin ist nicht gesichert, da dieses Amin möglicherweise erst bei der Aufarbeitung aus instabilen Methylaminoverbindungen entsteht. 4. Primäre Amine kommen in Vertretern aller 3 Algenklassen vor, besonders verbreitet jedoch bei Rhodophyceen (7 von 12 Arten). Biogenetisch werden zumindest die primären Amine der Rhodophyceen, mit Ausnahme von Methylamin, durch enzymatische Decarboxylierung aus entsprechenden Aminosäuren gebildet.
    Notes: Summary Twenty-eight species of marine Chlorophyceae (5), Phaeophyceae (11), and Rhodophyceae (12) were examined for the occurence of simple volatile amines. The volatile alkaline constituents of the algal samples were extrated by alkaline steam destillation and separated and identified by paper chromatography and microcristallography. A total of 9 volatile amines were found to occur in the species so far examined: methylamine (MA), dimethylamine (DMA), trimethylamine (TMA), ethylamine (ÄA), propylamine (PA), isobutylamine (iBA), isoamylamine (iAA), 2-phenylethylamine (PÄA), and 2-methylmercaptopropylamine (MMPA). MMPA has not previously been reported to occur in any other plant. The occurence of TMA is widespread in marine algae (23 of 28 sp.) whereas an occurrence of DMA could be demonstrated only in two species. MA, which was found in all algal samples, might be formed from labile methylamino-compounds in the course of preparation. Its coccurrence as a natural constituent of algae remains doubtful. Primary amines could be identified in species of each of the three classes of algae, but an especially widespread occurrence was found in Rhodophyceae. With the exception of MA the primary volatile amines, at least those of Rhodophyceae, arise biosynthetically from the corresponding amino acids by enzymatic decarboxylation.
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Plant systematics and evolution 78 (1929), S. 284-288 
    ISSN: 1615-6110
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Plant systematics and evolution 77 (1928), S. 227-238 
    ISSN: 1615-6110
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Plant systematics and evolution 77 (1928), S. 68-76 
    ISSN: 1615-6110
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Plant systematics and evolution 77 (1928), S. 147-157 
    ISSN: 1615-6110
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Plant systematics and evolution 78 (1929), S. 347-357 
    ISSN: 1615-6110
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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