The Rio Grande fracture zone in the western South Atlantic and its tectonic implications

Details The Rio Grande fracture zone in the western South Atlantic and its tectonic implications The Rio Grande fracture zone in the western South Atlantic and its tectonic implications

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981e%26psl..52..410g&link_type=abstract

Earth and Planetary Science Letters, Volume 52, Issue 2, p. 410-418.

Computer Science

6

Scientific paper

A broad zone of linear, mappable basement structures is observed north and northeast of the Rio Grande Rise in the South Atlantic Ocean. These structures lie along the same flow line as the Sa~o Paulo Ridge, the Florianopolis High, and onshore lineaments, suggesting that they all comprise the same tectonic trend: the Rio Grande fracture zone. The morphology developed along this fracture zone during the early opening of the South Atlantic Ocean formed a barrier to open ocean circulation during the Aptian and allowed the formation of extensive evaporite deposits to the north of it.

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