Where is the Rio Grande Rise?

The Rio Grande Rise is located in the southwestern Atlantic Ocean. It is situated east of Argentina and extends northward into the Brazil Basin. The rise is a broad, submarine volcanic feature that rises from the ocean floor to a depth of about 2,000 meters (6,562 feet) below sea level. The rise is composed of volcanic rocks, including basalts and andesites, which were formed by the eruption of lava from the Earth's mantle.