separating the Late Cenozoic ocean-floored Powell Basin

• Main Authors: J. C. Balanyá, J. Galindo-zaldívar, A. Jabaloy, G. Leitchenkov, A. Maldonado, J. Rodríguez-fernández, O. Vinnikovskaya
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 1997
• Subjects: Antarctic; Antarctic Peninsula; Powell Basin; The Antarctic; Weddell; Weddell Sea; Antarc*; Antarctica
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.378.1457; http://hera.ugr.es/doi/15005227.pdf

and the Mesozoic Weddell Sea domain, is revealed by multichannel seismic data. The SPR appears as a basement high, bounded northward by transtensional faults and by normal and major reverse faults to the south. These margin features seem to be linked to the Powell Basin southern strike-slip margin and to the Jane Arc paleotrench, respectively. We suggest the ridge evolved from the Antarctic Peninsula passive margin to become the deformational front of the Scotia/Antarctica Plate boundary, later being welded to the Antarctic Plate.