New seismic data support Cenozoic rifting in George VI Sound, Antarctic Peninsula
New multifold seismic‐reflection and wide‐angle reflection/refraction data across George VI Sound, Antarctic Peninsula, show the presence of graben and horst structures indicating an extensional origin. The data suggest that rocks of an accretionary complex and fore‐arc basin underlie the Sound and...
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1998
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fthighwire:oai:open-archive.highwire.org:gji:134/3/889 2023-05-15T13:52:21+02:00 New seismic data support Cenozoic rifting in George VI Sound, Antarctic Peninsula Bell, A. C. King, E. C. 1998-09-01 00:00:00.0 text/html http://gji.oxfordjournals.org/cgi/content/short/134/3/889 https://doi.org/10.1046/j.1365-246x.1998.00605.x en eng Oxford University Press http://gji.oxfordjournals.org/cgi/content/short/134/3/889 http://dx.doi.org/10.1046/j.1365-246x.1998.00605.x Copyright (C) 1998, Oxford University Press Articles TEXT 1998 fthighwire https://doi.org/10.1046/j.1365-246x.1998.00605.x 2015-02-28T21:53:18Z New multifold seismic‐reflection and wide‐angle reflection/refraction data across George VI Sound, Antarctic Peninsula, show the presence of graben and horst structures indicating an extensional origin. The data suggest that rocks of an accretionary complex and fore‐arc basin underlie the Sound and are in faulted contact along its eastern boundary with volcanic and plutonic rocks of the associated Mesozoic arc of western Palmer Land. A cover of possible syn‐ and postglacial Cenozoic deposits drapes the structures. The combination of new seismic, synthetic‐aperture radar and previously acquired data suggests subduction‐related rifting in the Sound was segmented, with opening in the south predominately by normal extension whilst in the north, dextral transtension predominated. Text Antarc* Antarctic Antarctic Peninsula Palmer Land HighWire Press (Stanford University) Antarctic Antarctic Peninsula Palmer Land ENVELOPE(-65.000,-65.000,-71.500,-71.500) George VI Sound ENVELOPE(-68.000,-68.000,-71.000,-71.000) Geophysical Journal International 134 3 889 902 |
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HighWire Press (Stanford University) |
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English |
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Articles Bell, A. C. King, E. C. New seismic data support Cenozoic rifting in George VI Sound, Antarctic Peninsula |
topic_facet |
Articles |
description |
New multifold seismic‐reflection and wide‐angle reflection/refraction data across George VI Sound, Antarctic Peninsula, show the presence of graben and horst structures indicating an extensional origin. The data suggest that rocks of an accretionary complex and fore‐arc basin underlie the Sound and are in faulted contact along its eastern boundary with volcanic and plutonic rocks of the associated Mesozoic arc of western Palmer Land. A cover of possible syn‐ and postglacial Cenozoic deposits drapes the structures. The combination of new seismic, synthetic‐aperture radar and previously acquired data suggests subduction‐related rifting in the Sound was segmented, with opening in the south predominately by normal extension whilst in the north, dextral transtension predominated. |
format |
Text |
author |
Bell, A. C. King, E. C. |
author_facet |
Bell, A. C. King, E. C. |
author_sort |
Bell, A. C. |
title |
New seismic data support Cenozoic rifting in George VI Sound, Antarctic Peninsula |
title_short |
New seismic data support Cenozoic rifting in George VI Sound, Antarctic Peninsula |
title_full |
New seismic data support Cenozoic rifting in George VI Sound, Antarctic Peninsula |
title_fullStr |
New seismic data support Cenozoic rifting in George VI Sound, Antarctic Peninsula |
title_full_unstemmed |
New seismic data support Cenozoic rifting in George VI Sound, Antarctic Peninsula |
title_sort |
new seismic data support cenozoic rifting in george vi sound, antarctic peninsula |
publisher |
Oxford University Press |
publishDate |
1998 |
url |
http://gji.oxfordjournals.org/cgi/content/short/134/3/889 https://doi.org/10.1046/j.1365-246x.1998.00605.x |
long_lat |
ENVELOPE(-65.000,-65.000,-71.500,-71.500) ENVELOPE(-68.000,-68.000,-71.000,-71.000) |
geographic |
Antarctic Antarctic Peninsula Palmer Land George VI Sound |
geographic_facet |
Antarctic Antarctic Peninsula Palmer Land George VI Sound |
genre |
Antarc* Antarctic Antarctic Peninsula Palmer Land |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Palmer Land |
op_relation |
http://gji.oxfordjournals.org/cgi/content/short/134/3/889 http://dx.doi.org/10.1046/j.1365-246x.1998.00605.x |
op_rights |
Copyright (C) 1998, Oxford University Press |
op_doi |
https://doi.org/10.1046/j.1365-246x.1998.00605.x |
container_title |
Geophysical Journal International |
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134 |
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3 |
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889 |
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902 |
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1766256632815157248 |