GLORIA

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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Geo-marine letters 10 (1990), S. 23-30 
    ISSN: 1432-1157
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Detailed analysis of the morphology of Bacino Bannock, a deep-sea basin filled by a hypersaline brine, shows with unusual detail the effect on the ocean floor topography of the deformation and dissolution of a salt body under tectonic stress. Although salt diapirism occurs in the central part of the investigated area, the major cause of basin formation is dissolution of subsurface evaporites which creates negative relief that exceeds by about one order of magnitude the positive relief. The true shape of the deformed salt deposit is preserved as a result of the absence of a thick post-evaporites sedimentary cover.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1157
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Multichannel seismic reflection profiles from the continental rise west of the Antarctic Peninsula between 63° and 69°S show the growth of eight very large mound-shaped sedimentary bodies. MCS profiles and long-range side-scan sonar (GLORIA) images show the sea floor between mounds is traversed by channels originating in a dendritic pattern near the base of the continental slope. The mounds are interpreted as sediment drifts, constructed mainly from the fine-grained components of turbidity currents originating on the continental slope, entrained in a nepheloid layer within the ambient southwesterly bottom currents and redeposited downcurrent.
    Type of Medium: Electronic Resource
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  • 3
    Publication Date: 2024-02-26
    Description: For the past 50 years, gas hydrates have been regarded by scientists as part of the hydrocarbon reserves, particularly at governmental institutions. A better understanding of the processes controlling the distribution and dynamics of gas hydrates in nature, especially their sensitivity to changes in gas composition, pressure and temperature, requires both theoretical knowledge of their stability and dynamic behavior and knowledge of how gas hydrates form and where they occur in the sediment. Geophysical data, geochemical data and thermodynamic models indicate that both the rate of response and the total integrated response to climate change in the ocean depend on the location and forms in which hydrates are distributed. Thus, mapping gas hydrates by indirect geophysical methods or through dedicated drilling campaigns is fundamental to all research involving gas hydrates. This includes studies of their role in climate change, their consequences for slope stability, their role at the base of the food web for benthic ecosystems and their potential as a future energy resource. Here we provide a brief introduction to the occurrence of gas hydrates on Earth, and how this information may assist in detecting them on other planetary bodies.
    Type: Book chapter , NonPeerReviewed
    Format: text
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