Backarc evolution from rifting to mature spreading: The Bransfileld and North Fiji Basins (NW Antarctica and SW Pacific)

• Main Authors: Gràcia, E., Canals, M., Lagabrielle, Y., Auzende, J. M.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Sociedad Geológica de España 1996
• Subjects: Swath-bathymetry; Magnetics; Backarc basin; Rifting; Seafloor spreading; Antarctica; Southwest Pacific; Antarctic; Antarctic Peninsula; Pacific; The Antarctic; Antarc*; antartic*
• Online Access: http://hdl.handle.net/10272/12425

Five areas, the Eastern and Central Bransfield Basins off the Antarctic Peninsula, and the Tripartite, Central Spreading and South Pandora Ridges of the North Fiji Basin, have been studied using swath-bathymetry and geophysical data. The sites can be classified in terms of backarc basin evolution , from less evolved stages dominated by rifting and incipient spreading (Bransfield Basin), to the maturest stages characterized by organized backarc seafloor spreading, like the North Fiji Basin ridges Las Cuencas Central y Oriental de Bransfield (NO Peninsula Antartica) y las Dorsales Tripartita, Central y Sur-Pandora de la Cuenca Nor-Fidjiana (Pacifico SO) han sido estudiadas a partir de datos de batimetría de multihaz y métodos geofísicos. Dichas áreas pueden clasificarse en estadios evolutivos de tras-arco, desde estadios incipientes y de pre-expansión como la Cuenca de Bransfield, hasta los estadios maduros de expansión oceánica organizada, como las dorsales de la Cuenca Nor-Fidjiana