English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/18847
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 74 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Título

Shackleton Fracture Zone: No barrier to early circumpolar ocean circulation

AutorLivermore, Roy; Eagles, Graeme; Peter Morris, Peter; Maldonado, Andrés
Palabras claveGateways
Southern Ocean
Antarctic Circumpolar Current
Shackleton Fracture Zone
Transverse ridge
Fecha de publicaciónsep-2004
EditorGeological Society of America
CitaciónGeology 32(9): 797-800 (2004)
ResumenThe opening of Southern Ocean gateways was critical to the formation of the Antarctic Circumpolar Current and may have led to Cenozoic global cooling and Antarctic glaciation. Drake Passage was probably the final barrier to deep circumpolar ocean currents, but the timing of opening is unclear, because the Shackleton Fracture Zone could have blocked the gateway until the early Miocene. Geophysical and geochemical evidence presented here suggests that the Shackleton Fracture Zone is an oceanic transverse ridge, formed by uplift related to compression across the fracture zone since ca. 8 Ma. Hence, there was formerly (i.e., in the Miocene) no barrier to deep circulation through Drake Passage, and a deep-water connection between the Pacific and Atlantic Oceans was probably established soon after spreading began in Drake Passage during the early Oligocene.
Versión del editorhttp://dx.doi.org/10.1130/G20537.1
URIhttp://hdl.handle.net/10261/18847
DOI10.1130/G20537.1
ISSN1553-040X
Aparece en las colecciones: (IACT) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.