Caracterización geológica del enlace entre la cuenca de Bransfield y la Dorsal Sur de Scotia.

In February 1992, a geological and geophysical survey was carried out in the NW Antarctic Peninsula region, between South Shetland, Elephant and Orkney Islands (Antarctica), during the "Scotia 92" cruise aboard BIO Hespérides. The multi-channel seismics, magnetics and gravity data show the...

ver descrição completa

Detalhes bibliográficos
Autores: Canals i Artigas, Miquel, Acosta-Yepes, Juan, Gràcia, Eulàlia, Escartin, J., Grupo ORCA
Formato: artículo
Fecha de publicación:1994
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/319357
Acesso em linha:http://hdl.handle.net/10261/319357
Access Level:acceso abierto
Palavra-chave:Sede Central IEO
Medio Marino
id ES_82490cd42d2b94b49c1bb5efdcd98567
oai_identifier_str oai:digital.csic.es:10261/319357
network_acronym_str ES
network_name_str España
repository_id_str
spelling Caracterización geológica del enlace entre la cuenca de Bransfield y la Dorsal Sur de Scotia.Canals i Artigas, MiquelAcosta-Yepes, JuanGràcia, EulàliaEscartin, J.Grupo ORCASede Central IEOMedio MarinoIn February 1992, a geological and geophysical survey was carried out in the NW Antarctic Peninsula region, between South Shetland, Elephant and Orkney Islands (Antarctica), during the "Scotia 92" cruise aboard BIO Hespérides. The multi-channel seismics, magnetics and gravity data show the different sedimentary characteristics between Scotia and Powell Basins. At the western end of the South Scotia Ridge (SSR), an area (50 x 100 km) covered by multibearn bathymetry reveals a maximum depth of more than 5,300 m corresponding to what we refer to as the Hespérides Deep. The SSR is a sinistral transform plate boundary between the Scotia and Antarctic plates (on the north and south respectively). The morphology of the SSR is constituted by two ridges separated by a deep and narrow valiey (10 to 30 km wide). Two main families of faults can be distinguished, one trending E-W and parallel to the plate boundary, and another one trending NW-SE. We iriterpret that the former accommodates the regional strike-slip motion, whereas the later has an extensional component which may be related to the main trend of Bransfield Basin. The rhomboid-shape of the Deep is the result of the interplay between both sets of faults. Assuming that the transform boundary runs between the two ridges we consider that the Hesperides Deep is a smaU puli-apart basin developed by the sinistral strike-slip motion along the SSRSí202320231994info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/319357reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésSede Central IEOhttps://revistes.ub.edu/index.php/ActaGeologica/article/view/4525/5740info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3193572026-05-22T06:33:51Z
dc.title.none.fl_str_mv Caracterización geológica del enlace entre la cuenca de Bransfield y la Dorsal Sur de Scotia.
title Caracterización geológica del enlace entre la cuenca de Bransfield y la Dorsal Sur de Scotia.
spellingShingle Caracterización geológica del enlace entre la cuenca de Bransfield y la Dorsal Sur de Scotia.
Canals i Artigas, Miquel
Sede Central IEO
Medio Marino
title_short Caracterización geológica del enlace entre la cuenca de Bransfield y la Dorsal Sur de Scotia.
title_full Caracterización geológica del enlace entre la cuenca de Bransfield y la Dorsal Sur de Scotia.
title_fullStr Caracterización geológica del enlace entre la cuenca de Bransfield y la Dorsal Sur de Scotia.
title_full_unstemmed Caracterización geológica del enlace entre la cuenca de Bransfield y la Dorsal Sur de Scotia.
title_sort Caracterización geológica del enlace entre la cuenca de Bransfield y la Dorsal Sur de Scotia.
dc.creator.none.fl_str_mv Canals i Artigas, Miquel
Acosta-Yepes, Juan
Gràcia, Eulàlia
Escartin, J.
Grupo ORCA
author Canals i Artigas, Miquel
author_facet Canals i Artigas, Miquel
Acosta-Yepes, Juan
Gràcia, Eulàlia
Escartin, J.
Grupo ORCA
author_role author
author2 Acosta-Yepes, Juan
Gràcia, Eulàlia
Escartin, J.
Grupo ORCA
author2_role author
author
author
author
dc.subject.none.fl_str_mv Sede Central IEO
Medio Marino
topic Sede Central IEO
Medio Marino
description In February 1992, a geological and geophysical survey was carried out in the NW Antarctic Peninsula region, between South Shetland, Elephant and Orkney Islands (Antarctica), during the "Scotia 92" cruise aboard BIO Hespérides. The multi-channel seismics, magnetics and gravity data show the different sedimentary characteristics between Scotia and Powell Basins. At the western end of the South Scotia Ridge (SSR), an area (50 x 100 km) covered by multibearn bathymetry reveals a maximum depth of more than 5,300 m corresponding to what we refer to as the Hespérides Deep. The SSR is a sinistral transform plate boundary between the Scotia and Antarctic plates (on the north and south respectively). The morphology of the SSR is constituted by two ridges separated by a deep and narrow valiey (10 to 30 km wide). Two main families of faults can be distinguished, one trending E-W and parallel to the plate boundary, and another one trending NW-SE. We iriterpret that the former accommodates the regional strike-slip motion, whereas the later has an extensional component which may be related to the main trend of Bransfield Basin. The rhomboid-shape of the Deep is the result of the interplay between both sets of faults. Assuming that the transform boundary runs between the two ridges we consider that the Hesperides Deep is a smaU puli-apart basin developed by the sinistral strike-slip motion along the SSR
publishDate 1994
dc.date.none.fl_str_mv 1994
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/319357
url http://hdl.handle.net/10261/319357
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Sede Central IEO
https://revistes.ub.edu/index.php/ActaGeologica/article/view/4525/5740
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869412035304882176
score 15,81155

Registos relacionados