San Felipe and Baja Geologt
 

San Felipe, Baja, Mexico  

The Colorado River Delta
Click on the Image for PDF Document.

Geologists call the area that roughly includes the Coachella and Imperial Valleys of southern California, and the western half of the Mexicali Valley and the Colorado River delta in Mexico, the Salton Trough. This region of southern California and northwestern Mexico is an area of intense geological activity. The Salton Trough is a complex transition zone between the right-lateral motion of the San Andreas transform fault system, and the northwestward progressing spreading ridge complex of the Gulf of California segment of the Eastern Pacific Rise.

This PDF document is generously provided by David L. Alles. You can read more of his work on the Colorado River on his website.

 


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The Salton Trough