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  • 1
    Keywords: Marine sediments
    Type of Medium: Book
    Pages: III, 40 Seiten , Illustrationen , 26 cm
    Series Statement: Smithsonian contributions to the marine sciences no. 13
    DDC: 551.46/083/384
    Language: English
    Note: Bibliography: p. 38-40
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Sedimentology 29 (1982), S. 0 
    ISSN: 1365-3091
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The benthic foraminifer Quinqueloculina impressa Reuss, was buried in various types of sediment in order to assess its capability for producing sediment disturbances and thus, ichnofossils. Silts and silty-clays showed distinct burrows; fine sands did not. Two types of burrows were produced: fairly straight, vertical burrows from 4 cm below the water-sediment interface to within 1 cm of the sediment surface, and a horizontal and vertical maze-like burrow system in the top centimetre of the sediment. Individuals moving on the sediment surface also produced visible trails. When the sediments were dried the burrows were always destroyed; in some cases the surface trails were preserved. We propose that the vertical burrows are escape structures and that the horizontal and vertical maze-like structures are living burrows.Ichnofossils similar to the escape structures and surface structures have been described. Presence of these ichnofossils indicates a low energy sedimentary environment and a lack of macrofaunal bioturbation. The presence of escape structures may indicate a pulsatory pattern of sedimentation.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 285 (1980), S. 537-541 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Sea of Marmara sediments provide an almost complete record of major palaeo-oceanographic events affecting the Aegean and Black Seas between the late Pleistocene and the Recent. Fluctuating patterns of water mass exchange, resulting from regionally important climatic oscillations, produced the ...
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Geo-marine letters 1 (1981), S. 49-55 
    ISSN: 1432-1157
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Palygorskite is a clay mineral widely distributed in late Quaternary deposits of the eastern Mediterranean, where, locally, it proves an ideal tracer of sediment dispersal. This study shows that the origin of this mineral is not limited to African sources. Cores containing late Pleistocene to recent sediment record the transport of palygorskite from the Plain of Helos on the Peloponnesus to specific deep basins along the Hellenic Arc. Palygorskite, commonly concentrated in the silt size fraction, may be overlooked in studies that focus only on the 〈2 μm fraction. In this region we find that the detrial palygorskite distribution is partially controlled by size-sorting effects related to gravity-induced transport processes. In consequence, comprehensive compositional analyses should be made both on the silt and clay fractions.
    Type of Medium: Electronic Resource
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