Definitions for "EAST PACIFIC RISE"
A part of the mid-ocean ridge system extending northeasterly from near New Zealand to just off the coast of Mexico. The EPR is spreading extremely rapidly and is the site of a great deal of volcanic and hydrothermal activity.
a seafloor spreading center in the eastern Pacific Ocean basin
A mountain chain, characterized by volcanic activity and vents, that runs primarily north-south in the Pacific and rises one to 1.5 miles (1.6-2.4 km) above the ocean floor at a width of one to 2 miles (1.6-3.2 km) at an average depth of 1.7 miles (2.7 km). It abuts the North American Plate at the Gulf of California.