Elevated aseismic structures more or less isolated in the oceans have been often interpreted as microcontinents. They are particularly numerous in the Indian Ocean: Crozet Plateau, Kerguelen Plateau, Madagascar Plateau, Seychelles Plateau. Geophysical data show that some of these plateaus are true microcontinents (continental crust) while others are probably only elevated oceanic structures. Other examples are shown in the North Atlantic: The Jan Mayen Ridge in the Norwegian Sea and the Rockall Plateau. Sedimentation on the margins of true microcontinents are often characterized by well defined syn-rift deposits and pelagic post-opening sediments with few elastics due to the isolation from important land-masses.
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Geology of Continental Margins
Written in 1977 the publication presents interpretations of then-new data bearing on the geology and geophysics of continental margins. The book includes a discussion of plate tectonics and evolution of continental margins; presentations on the stratigraphy and structure of pull-apart and compressional margin;, prospective petroleum source rocks, their organic content, rate of burial, and distribution on slopes and rises of different margin types; prospective reservoir rock patterns in relation to depositional processes and to the sedimentary and structural histories for different types of continental margins; and seismic recognition of depositional facies on slopes and rises for different margin types with varying rates of sediment supply during eustatic sea-level changes.