Jemez Lineament

This formed about 1.7 billion years ago, when oceanic crust was subducting under what was then the southern edge of North America.

This hydrous subduction scar now separates basement rock of the Yavapai-Mazatzal transition zone from the Mazaztl Province proper.

[3] It is interpreted instead as a hydrous subduction zone scar marking the southern boundary of the pre-1700 Ma Yavapai basement.

Seismic imaging shows both north- and south-dipping reflections that converge at the crust-mantle boundary.

[7] Geophysical studies have identified a low-velocity upper mantle zone coincident with the lineament.

[3] Uranium deposits in the Grants, New Mexico area underlie the Mount Taylor volcanic field, but there is no clear connection.