Tectonics and paleoceanography in the northern sector of the Antarctic Peninsula: Preliminary results of HESANT 1992/93 cruise with the B/O HESPERIDES
11 páginas, 7 figuras.
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| Format: | artículo biblioteca |
| Language: | English |
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Consejo Superior de Investigaciones Científicas (España)
1993
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| Subjects: | Tectonic, Paleoceanography, Antarctic Peninsula, Seismic stratigraphy, Tectónica, Paleoceanografía, Península Antártica, Estratigrafía sísmica, |
| Online Access: | http://hdl.handle.net/10261/28453 |
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dig-icm-es-10261-284532019-02-20T10:54:13Z Tectonics and paleoceanography in the northern sector of the Antarctic Peninsula: Preliminary results of HESANT 1992/93 cruise with the B/O HESPERIDES Tectónica y paleoceanografá en el sector norte de la península Antárctica: Resultados preliminares de la campaña HESANT 1992/93 a bordo del B/O HESPÉRIDES Maldonado, Andrés Aldaya, Florencio Balanyá, Juan Carlos Galindo Zaldívar, Jesús Livermore, Roy Monseñe, Francisco Miguel Rodríguez-Fernández, José Roussanov, Momtchil Sanz de Galdeano, Carlos Suriñach, Emma Viseras, C. Tectonic Paleoceanography Antarctic Peninsula Seismic stratigraphy Tectónica Paleoceanografía Península Antártica Estratigrafía sísmica 11 páginas, 7 figuras. [EN] The boundaries between the plates located in the northern sector of the Antarctic Peninsula were investigated during the B10 HESPERIDES HESANT 92/93 cruise using multichannel seismic profiles, magnetometry, and multibeam echo sounding. The investigation focused on the analysis of the tectonic relationships between the main lithospheric elements of the area and the paleoceanographic evolution of the continental margins and basins during the Upper Cenozoic. The triple junction defined by the southern end of the Shackleton Fracture Zone, the South Shetland Trench and the South Scotia Ridge shows a compressive structure where tectonic blocks and deep rooted diapirs develop. The boundary between the Scotia and Antarctic plates is characterized by a succession of structural highs, which represent continental crustal blocks, and intervening transtensive basins bounded by strike-slip faults. The Powell Basin and the continental margins of the Antarctic Peninsula in the Weddell Sea show several evolutionary styles which may represent an asymmetric opening of the basin and the relative importance of extensional and strikeslip faults in its development. [ES] Durante la campaña HESANT 92/03 con el B/O Hespérides, se han investigado con perfiles de sísmica multicanal, magnetometría y sondas multihaz, las relaciones geodinámicas en el límite de las placas situadas en la parte septentrional de la Península Antártica, así como la evolución paleoceanográfica de los márgenes continentales y cuencas de este sector durante el Cenozóico superior. La unión triple definida por la terminación meridional de la Zona de Fractura Shackleton, la fosa de las Shetland del Sur y la dorsal meridional del Mar de Scotia muestra una estructura compresiva, con el desarrollo de bloques y diapiros profundamente enraizados en la corteza. El límite entre las placas de Scotia y Antártica está ocupado por una alternancia de altos estructurales, correspondientes a fragmentos de corteza continental, y cuencas transtensivas delimitadas por fallas de salto en dirección. La Cuenca Powell y los márgenes continentales de la Península Antártica en el Mar de Weddell presentan varios estilos evolutivos que ponen de relieve una apertura disimétrica y la importancia relativa de las fallas distensivas y de salto en dirección en su desarrollo. This research was conducted within the framework of the 1992/1993 Spanish Antarctic Program, with the endorsement of the B/O HESPERIDES Comisión de Gestión. The project was founded by an Acción Especial de la Comisión Interministerial de Ciencia y Tecnología (CICYT). Peer reviewed 2010-10-14T13:28:47Z 2010-10-14T13:28:47Z 1993 artículo http://purl.org/coar/resource_type/c_6501 Scientia Marina 57(1): 79-89 (1993) 0214-8358 http://hdl.handle.net/10261/28453 1886-8134 en http://www.icm.csic.es/scimar/index.php/secId/6/IdArt/2631/ open 12046248 bytes application/pdf Consejo Superior de Investigaciones Científicas (España) |
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| language |
English |
| topic |
Tectonic Paleoceanography Antarctic Peninsula Seismic stratigraphy Tectónica Paleoceanografía Península Antártica Estratigrafía sísmica Tectonic Paleoceanography Antarctic Peninsula Seismic stratigraphy Tectónica Paleoceanografía Península Antártica Estratigrafía sísmica |
| spellingShingle |
Tectonic Paleoceanography Antarctic Peninsula Seismic stratigraphy Tectónica Paleoceanografía Península Antártica Estratigrafía sísmica Tectonic Paleoceanography Antarctic Peninsula Seismic stratigraphy Tectónica Paleoceanografía Península Antártica Estratigrafía sísmica Maldonado, Andrés Aldaya, Florencio Balanyá, Juan Carlos Galindo Zaldívar, Jesús Livermore, Roy Monseñe, Francisco Miguel Rodríguez-Fernández, José Roussanov, Momtchil Sanz de Galdeano, Carlos Suriñach, Emma Viseras, C. Tectonics and paleoceanography in the northern sector of the Antarctic Peninsula: Preliminary results of HESANT 1992/93 cruise with the B/O HESPERIDES |
| description |
11 páginas, 7 figuras. |
| format |
artículo |
| topic_facet |
Tectonic Paleoceanography Antarctic Peninsula Seismic stratigraphy Tectónica Paleoceanografía Península Antártica Estratigrafía sísmica |
| author |
Maldonado, Andrés Aldaya, Florencio Balanyá, Juan Carlos Galindo Zaldívar, Jesús Livermore, Roy Monseñe, Francisco Miguel Rodríguez-Fernández, José Roussanov, Momtchil Sanz de Galdeano, Carlos Suriñach, Emma Viseras, C. |
| author_facet |
Maldonado, Andrés Aldaya, Florencio Balanyá, Juan Carlos Galindo Zaldívar, Jesús Livermore, Roy Monseñe, Francisco Miguel Rodríguez-Fernández, José Roussanov, Momtchil Sanz de Galdeano, Carlos Suriñach, Emma Viseras, C. |
| author_sort |
Maldonado, Andrés |
| title |
Tectonics and paleoceanography in the northern sector of the Antarctic Peninsula: Preliminary results of HESANT 1992/93 cruise with the B/O HESPERIDES |
| title_short |
Tectonics and paleoceanography in the northern sector of the Antarctic Peninsula: Preliminary results of HESANT 1992/93 cruise with the B/O HESPERIDES |
| title_full |
Tectonics and paleoceanography in the northern sector of the Antarctic Peninsula: Preliminary results of HESANT 1992/93 cruise with the B/O HESPERIDES |
| title_fullStr |
Tectonics and paleoceanography in the northern sector of the Antarctic Peninsula: Preliminary results of HESANT 1992/93 cruise with the B/O HESPERIDES |
| title_full_unstemmed |
Tectonics and paleoceanography in the northern sector of the Antarctic Peninsula: Preliminary results of HESANT 1992/93 cruise with the B/O HESPERIDES |
| title_sort |
tectonics and paleoceanography in the northern sector of the antarctic peninsula: preliminary results of hesant 1992/93 cruise with the b/o hesperides |
| publisher |
Consejo Superior de Investigaciones Científicas (España) |
| publishDate |
1993 |
| url |
http://hdl.handle.net/10261/28453 |
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