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The Gulf of California Rift Zone (GCRZ) is the northernmost extension of the East Pacific Rise which extends some 1,300 km (800 mi) from the mouth of the Gulf of California to the southern terminus of the San Andreas Fault at the Salton Sink. The GCRZ is an incipient rift zone akin to the Red Sea Rift.
This extension of the East Pacific Rise is often referred to as the Gulf of California Rift Zone. The Gulf would extend as far as Indio, California, except for the tremendous delta created by the Colorado River. This delta blocks the sea from flooding the Mexicali and Imperial Valleys. Volcanism dominates the East Pacific Rise.
Gulf of California Rift Zone: 1300: Mexico: Rift zone: Active: 2010 Mexicali (M7.2) ... Rio Grande Valley, United States and Mexico: Rift zone: Romeral Fault System: 700:
The northwestern end of the trough starts at the San Gorgonio Pass in Riverside County and extends 115 miles (185 km) southeast to the Gulf of California. [3] Major geographical features located in the trough include the Coachella Valley , the Salton Sea , and the Imperial Valley , in the United States, and the western side of the Mexicali ...
Relief map with the East Pacific Rise (shown in light blue), extending south from the Gulf of California. The East Pacific Rise (EPR) is a mid-ocean rise (usually termed an oceanic rise and not a mid-ocean ridge due to its higher rate of spreading that results in less elevation increase and more regular terrain), at a divergent tectonic plate boundary, located along the floor of the Pacific Ocean.
Large sections of other Western states, Texas and the Great Plains also have a high rate of properties at risk, as does parts of Florida. You can zoom in and hover over counties on the maps below ...
The boundary along the Gulf of California is complex. The gulf is underlain by the Gulf of California Rift Zone, a series of rift basins and transform fault segments from the northern end of the East Pacific Rise in the mouth of the gulf to the San Andreas Fault system in the vicinity of the Salton Trough rift/Brawley seismic zone.
In a rift zone, seafloor spreading is underway, accompanied by volcanic and geothermal activity, active faulting [c] and rapid sedimentation. [ 32 ] Since five million years ago, the buildup of sediments in the Colorado River Delta separated the Salton Trough area from the actual Gulf of California , forming a large depression that currently ...