000 03000nam a22004815i 4500
001 978-3-642-19103-9
003 DE-He213
005 20140220083754.0
007 cr nn 008mamaa
008 110430s2011 gw | s |||| 0|eng d
020 _a9783642191039
_9978-3-642-19103-9
024 7 _a10.1007/978-3-642-19103-9
_2doi
050 4 _aQE1-996.5
072 7 _aRBG
_2bicssc
072 7 _aSCI031000
_2bisacsh
082 0 4 _a551
_223
100 1 _aRamalho, Ricardo A. S.
_eauthor.
245 1 0 _aBuilding the Cape Verde Islands
_h[electronic resource] /
_cby Ricardo A. S. Ramalho.
264 1 _aBerlin, Heidelberg :
_bSpringer Berlin Heidelberg,
_c2011.
300 _aXVIII, 210 p.
_bonline resource.
336 _atext
_btxt
_2rdacontent
337 _acomputer
_bc
_2rdamedia
338 _aonline resource
_bcr
_2rdacarrier
347 _atext file
_bPDF
_2rda
490 1 _aSpringer Theses
505 0 _aPreface -- Introduction -- The Cape Verde Archipelago -- Constraining the Cape Verde Swell using numerical models -- How to trace island freeboard -- Tracers of uplift and subsidence in the Cape Verde Archipelago -- Dating of sea-level palaeo-markers -- Vertical movements of Ocean Island Volcanoes: insights from a stationary plate -- Conclusions -- Future Work -- Bibliography.
520 _aHotspots 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.
650 0 _aGeography.
650 0 _aGeology.
650 0 _aPhysical geography.
650 0 _aOceanography.
650 1 4 _aEarth Sciences.
650 2 4 _aGeology.
650 2 4 _aGeophysics/Geodesy.
650 2 4 _aOceanography.
710 2 _aSpringerLink (Online service)
773 0 _tSpringer eBooks
776 0 8 _iPrinted edition:
_z9783642191022
830 0 _aSpringer Theses
856 4 0 _uhttp://dx.doi.org/10.1007/978-3-642-19103-9
912 _aZDB-2-EES
999 _c107471
_d107471