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Books > Earth & environment > Geography > Physical geography
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Building the Cape Verde Islands (Paperback, 2011 ed.)
Loot Price: R2,957
Discovery Miles 29 570
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Building the Cape Verde Islands (Paperback, 2011 ed.)
Series: Springer Theses
Expected to ship within 10 - 15 working days
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Hotspots are enigmatic surface features that are not easily
explained in the framework of plate tectonics. Investigating their
origin is the goal of this thesis, using field evidence collected
in the Cape Verde Islands, a prominent hotspot archipelago in the
eastern Atlantic Ocean. The approach taken is to document uplift of
the islands relative to sea level and use the uplift features to
test various models of hotspot development. Island uplift is
thought to arise from the growth of the anomalously shallow
seafloor on which the islands rest, known as the bathymetric swell,
which is characteristic of hotspots. The work comprises a
geological summary and detailed mapping of paleo sea level markers
on Cape Verde. Isotopic dating of the markers shows that uplift on
the islands over the last 6 Myr is up to 400 m, and that the uplift
chronology varies among islands. Two processes act to raise the
Cape Verde Islands. The dominant process is one that is local to
individual islands. The regional, swell-related component is
smaller, and possibly episodic. The observations provide strong
constraints on swell development and on hotspot models.
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