Antarctica A Keystone in a Changing World (2008) / Chapter Skim
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Antarctica's Continent-Ocean Transitions: Consequences for Tectonic Reconstructions--K. Gohl
Antarctica's Continent-Ocean Transitions: Consequences for Tectonic Reconstructions--K. Gohl
Pages 29-38
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From page 29... ...
(Figure 1) is, with the excepthe rifted passive margins contain extended continental crust tion of some areas in the central Weddell Sea, off western stretching between 50 and 300 km oceanward of the shelf Marie Byrd Land and off the Ross Sea shelf, dense enough edge.
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From page 30... ...
Although the Orion Anomaly may provide a hint dell Sea is still hampered by the lack of deep crustal seismic toward a volcanic-type margin, the few seismic data do not data. In the southern Weddell Sea seismic refraction data allow a complete characterization of the COT in the southern reveal a thinned continental crust of about 20 km thick Weddell Sea.
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From page 31... ...
Red lines show the tracks of offshore multichannel seismic pro files of SDLS. Dark blue lines mark the locations of offshore deep crustal seismic refraction profiles.
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From page 32... ...
Red lines show the tracks of offshore multichannel seismic profiles of SDLS. The dark blue line marks the location of an offshore deep crustal seismic refraction profile.
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From page 33... ...
Red lines show the tracks of offshore multichannel seismic profiles of SDLS. Dark blue lines mark the locations of offshore deep crustal seismic refraction profiles.
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From page 34... ...
Red lines show the tracks of offshore multichannel seismic profiles of SDLS. Dark blue lines mark the locations of offshore deep crustal seismic refraction profiles.
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From page 35... ...
Red lines show the tracks of offshore multichannel seismic profiles of SDLS. Dark blue lines mark the locations of offshore deep crustal seismic refraction profiles.
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From page 36... ...
Considering nal continent of normal crustal thickness, makes up about that ice sheets advanced to the shelf breaks of most Antarc1.5 106 km2. The quantification of extended marginal crust tic continental margins during glacial maxima, the isostatic has implications for plate-kinematic reconstructions, paleo- response must be directly related to the width and depths of bathymetric models, and possibly for isostatic balancing of any extended continental crust and lithosphere oceanward of the Antarctic continent in glacial-interglacial cycles.
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From page 37... ...
tion on the Wilkes Land margin. In The Antarctic Continental Margin: Guseva, Y
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From page 38... ...
2000. Geometry Antarctic continental margin in the eastern Weddell Sea.
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