Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/19759
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Tectonic development of the Bransfield Basin and its prolongation to the South Scotia Ridge, northern Antarctic Peninsula |
Autor: | Galindo-Zaldívar, Jesús; Gamboa, Luiz; Maldonado, Andrés CSIC ORCID; Nakao, Seizo; Bochu, Yao | Palabras clave: | Bransfield Basin Continental blocks Backarc basin Transcurrent faults Roll-back |
Fecha de publicación: | 31-may-2004 | Editor: | Elsevier | Citación: | Marine Geology 206(1-4): 267-282 (2004) | Resumen: | The Bransfield Basin is located off the northern tip of the Antarctic Peninsula. The analysis of multichannel seismic reflection profiles allows the shallow structure of the Bransfield Basin and its eastwards prolongation through the Scotia Sea to be imaged. The Bransfield Basin is asymmetrical, with most of the sediment input coming from the passive Antarctic Peninsula margin, which is deformed by normal faults generally dipping less than 45° northwestwards. Much less sediment comes from the conjugate South Shetland Islands margin, which is dominated by high-angle normal faults, generally dipping between 45° and 60°, constituting the inner boundary of the South Shetland Block tectonic horst. The detachment and moving apart of the South Shetland Block from the Antarctic Peninsula led to the opening of the Bransfield Basin, where incipient oceanic spreading has been reported previously. The South Shetland Block outer boundary to the northwest is made of the South Shetland Trench, which to the east passes into the sinistral transpressive Scotia–Antarctic plate boundary marked by the prominent South Scotia Ridge. Following cessation of spreading in the Phoenix–Antarctic Ridge northwest of the South Shetland Block during middle Pliocene, roll-back played a major role in the development of the Bransfield Basin, with maximum extension in the Central subbasin. In addition, the Eastern Bransfield Basin accommodates most of the sinistral transtensional deformation along the South Scotia Ridge. Normal and reverse faults were simultaneously active along the inner and outer boundaries, respectively, of the continental crust fragment constituting the South Shetland Block. The development of the Bransfield Basin offers a good example of the tectonic processes involved in continental fragmentation associated with backarc basin development. | Versión del editor: | http://dx.doi.org/10.1016/j.margeo.2004.02.007 | URI: | http://hdl.handle.net/10261/19759 | DOI: | 10.1016/j.margeo.2004.02.007 | ISSN: | 0025-3227 |
Aparece en las colecciones: | (IACT) Artículos |
Mostrar el registro completo
CORE Recommender
SCOPUSTM
Citations
62
checked on 12-abr-2024
WEB OF SCIENCETM
Citations
60
checked on 29-feb-2024
Page view(s)
374
checked on 18-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.