The Jemez Lineament is a chain of late Cenozoic volcanic fields, 600 km long, reaching from the Springerville and White Mountains volcanic fields in East-Central Arizona to the Raton-Clayton volcanic field in Northeastern New Mexico. It was long interpreted as a hot spot trace (Raton hot spot) due to its resemblance in length and azimuth to the Yellowstone hot spot trace, but there is no systematic progression in age along the trace and it is now interpreted as a hydrous subduction zone scar, separating basement rock of the Yavapai-Mazatzal transition zone from the Mazaztl Province proper.