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  • 1
    Electronic Resource
    Electronic Resource
    Pockmarks: Submarine vents of natural gas or freshwater seeps? (1981)
    Springer
    Geo-marine letters 1 (1981), S. 193-199 
    Details
    ISSN: 1432-1157
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Shallow depressions (pockmarks) in recent sediments of the western Baltic Sea were investigated as the possible surface expression of a deeper-seated hydrocarbon reservoir or a submarine freshwater discharge. Hydrocarbon gases extracted from the recent sediments associated with pockmarks had molecular and isotopic compositions different from those in the deeper Schwedeneck field. Salinities in the vicinity of the pockmarks decreased from brackish Baltic seawater to freshwater conditions with depth. Freshwater outflow from underlying glacial sediment aquifers is the likely cause of these pockmarks.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02462433
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