ISSN:
1432-1157
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
Notes:
Abstract The structure of the South Powell Ridge (SPR), separating the Late Cenozoic ocean-floored Powell Basin 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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s003670050071
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