| Abajo Mountains | |
|---|---|
| Blue Mountains | |
Abajo Mountains near Monticello, Utah | |
| Highest point | |
| Peak | Abajo Peak |
| Elevation | 11,368 ft (3,465 m) NAVD 88[1] |
| Prominence | 4,550 ft (1,390 m)[2] |
| Coordinates | 37°50′52″N109°32′47″W / 37.8477°N 109.5463°W /37.8477; -109.5463 |
| Geography | |
| Country | United States |
| State | Utah |
| County | San Juan |
| Settlement(s) | Monticello East andBlanding South |
| Parent range | Colorado Plateau |
| Geology | |
| Rock age | 22–29 million years |
| Rock type | Laccolithic intrusions |
| Climbing | |
| Access | Manti-La Sal National Forest |
TheAbajo Mountains, sometimes referred to as theBlue Mountains, are a small mountain range west ofMonticello, Utah, south ofCanyonlands National Park and north ofBlanding, Utah. The mountain range is located within theManti–La Sal National Forest. The highest point within the range isAbajo Peak at 11,368 feet (3,465 m).[1]
This mountain range, like both theLa Sal Range andHenry Mountains in the same part of theColorado Plateau, is formed about igneous intrusions that are relatively resistant to erosion. Some of these intrusions formlaccoliths emplaced at depths of a few kilometers. The predominant igneous rock is porphyritichornblendediorite. Ages of intrusion in the Abajo Mountains fall in the interval from 22 to 29 million years.[3]
These mountain ranges are part of theColorado Plateau province west of the greater ranges of theRocky Mountains. The laccolith ranges are much younger and have a very different geologic origin.[3]
The range was reputedly named by the Spanish in the 1700s, the name "Abajo" meaning "low".[4][5]
