Valley and range sequence-Southern Yuma County
# Valley and range sequence-Southern Yuma County

The Valley and range sequence-Southern Yuma County is a 3-Valley sequence of NW–by–SE trending block faulted valleys and mountains. About eleven major mountain ranges connect to each other in four, (mostly parallel), mountain sequences.

This regional parallel valley-mountain sequence ends at the Gila River valley at the north; to the south, it extends to the Gran Desierto de Altar of northwestern Mexico; the sequence is a remnant of the Basin and Range system.

## List of valleys

* Coyote Wash and Lechuguilla Desert
* Mohawk Valley (Arizona)
* San Cristobal Valley

## Table of mountain ranges

The three valleys lay mostly between these perimeter mountain sequences.

| West Sequence North | W-Central block | E-Central block | East Sequence North |
| - | - | - | - |
| Gila River Valley | Gila River Valley | Gila River Valley | Gila River Valley |
| Gila Mountains (Yuma County) | Wellton Hills and Baker Peaks | Mohawk Mountains | Aztec Hills |
| Gila Mountains (Yuma County) | Copper Mountains | Mohawk Mountains | Aguila Mountains |
| Tinajas Altas Mountains and Butler Mountains) | W:Cabeza Prieta and Tule Mountains E:Sierra Pinta | Bryan Mountains and Antelope Hills | Granite Mountains (Arizona) |
| Tinajas Altas Mountains and Butler Mountains) | W:Cabeza Prieta and Tule Mountains E:Sierra Pinta | Bryan Mountains and Antelope Hills | xxxxxx |
| West Sequence South | W-Central block | E-Central block | East Sequence South |
