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.

2-representative valleys between Block-faulted mountain ranges-(cross-section).

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

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
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See also
  • Fault-block mountain

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