The Rocky Mountains, also known as the Rockies, are a major mountain range and the largest mountain system in North America. The Rocky Mountains stretch 3,000 miles in straight-line distance from the northernmost part of western Canada, to New Mexico in the southwestern United States. Depending on differing definitions between Canada and the U.S., its northern terminus is located either in northern British Columbia's Terminal Range south of the Liard River and east of the Trench, or in the northeastern foothills of the Brooks Range/British Mountains that face the Beaufort Sea coasts between the Canning River and the Firth River across the Alaska-Yukon border. Its southernmost point is near the Albuquerque area adjacent to the Rio Grande rift and north of the Sandia–Manzano Mountain Range. Being the easternmost portion of the North American Cordillera, the Rockies are distinct from the tectonically younger Cascade Range and Sierra Nevada, which both lie farther to its west.
The Sangre de Cristo Range is a mountain range of the Rocky Mountains in southern Colorado in the United States, running north and south along the east side of the Rio Grande Rift. The mountains extend southeast from Poncha Pass for about 75 mi (121 km) through south-central Colorado to La Veta Pass, approximately 20 mi (32 km) west of Walsenburg, and form a high ridge separating the San Luis Valley on the west from the watershed of the Arkansas River on the east. The Sangre de Cristo Range rises over 7,000 ft (2,100 m) above the valleys and plains to the west and northeast.
The Colorado Plateau, also known as the Colorado Plateau Province, is a physiographic and desert region of the Intermontane Plateaus, roughly centered on the Four Corners region of the southwestern United States. This province covers an area of 336,700 km2 (130,000 mi2) within western Colorado, northwestern New Mexico, southern and eastern Utah, northern Arizona, and a tiny fraction in the extreme southeast of Nevada. About 90% of the area is drained by the Colorado River and its main tributaries: the Green, San Juan, and Little Colorado. Most of the remainder of the plateau is drained by the Rio Grande and its tributaries.
The Uinta Mountains are an east-west trending chain of mountains in northeastern Utah extending slightly into southern Wyoming in the United States. As a subrange of the Rocky Mountains, they are unusual for being the highest range in the contiguous United States running east to west, and lie approximately 100 miles (160 km) east of Salt Lake City. The range has peaks ranging from 11,000 to 13,528 feet, with the highest point being Kings Peak, also the highest point in Utah. The Mirror Lake Highway crosses the western half of the Uintas on its way to Wyoming.
The Sangre de Cristo Mountains are the southernmost subrange of the Rocky Mountains. They are located in southern Colorado and northern New Mexico in the United States. The mountains run from Poncha Pass in South-Central Colorado, trending southeast and south, ending at Glorieta Pass, southeast of Santa Fe, New Mexico. The mountains contain a number of fourteen thousand foot peaks in the Colorado portion, as well as all the peaks in New Mexico which are over twelve thousand feet.
The Mummy Range is a mountain range in the Rocky Mountains of northern Colorado in the United States. The range is a short subrange of the Front Range located in southwestern Larimer County northwest of the town of Estes Park. It is located largely within Rocky Mountain National Park, extending north from Trail Ridge Road approximately 15 mi (24 km). The Arapaho name is "nooku-bee3ei-no," which translates to "White Owls."
The Weminuche Wilderness is a wilderness area in southwest Colorado managed by the United States Forest Service as part of the San Juan National Forest on the west side of the Continental Divide and the Rio Grande National Forest on the east side of the divide. The Weminuche Wilderness was designated by Congress in 1975, and expanded by the Colorado Wilderness Acts of 1980 and 1993. It is located 4 miles (6.4 km) southeast of the town of Silverton, 17 miles (27 km) northeast of Durango, and 8 miles (13 km) west of South Fork. At 499,771 acres (2,022.50 km2), it is the largest wilderness area in the state of Colorado. Elevation in the wilderness ranges from 7,700 feet (2,300 m) along the Animas River to 14,093 feet (4,296 m) at the summit of Windom Peak.
The Zuñi Mountains are a mountain range located mainly in Cibola County of northwestern New Mexico, United States, with a small portion extending into McKinley County. The range is located largely in the Cibola National Forest, lying south of Interstate 40 from southeast of Gallup to southwest of Grants. The range is about sixty miles (97 km) long and forty miles (64 km) wide. The highest point is Mount Sedgwick, 9,256 feet ; elevations in the range go down to 6,400 feet.
Twilight Peak is the highest summit of the West Needle Mountains range of the San Juan Mountains System in southwestern Colorado.
The Wet Mountains are a small mountain range in southern Colorado, named for the amount of snow they receive in the winter as compared to the dried Great Plains to the east. They are a sub-range of the Sangre de Cristo Mountains, in the southern Rocky Mountains System. There are three variant names of mountain range: Cuerno Verde, Greenhorn Mountains, and Sierra Mojada.
Pigeon Peak, elevation 13,978 ft (4,260 m), is a summit in the Needle Mountains, a subrange of the San Juan Mountains in the southwestern part of the US State of Colorado. It rises dramatically on the east side of the Animas River, 1.5 miles (2.4 km) west of the fourteener Mount Eolus. It is located in the Weminuche Wilderness, part of the San Juan National Forest.
Lizard Head is a mountain summit in the San Miguel Mountains range of the Rocky Mountains of North America. The 13,119-foot (3,999 m) thirteener is located in the Lizard Head Wilderness, 6.8 miles (11.0 km) west by south of the Town of Ophir, Colorado, United States, on the drainage divide separating San Juan National Forest and Dolores County from Uncompahgre National Forest and San Miguel County.
The La Plata Mountains are a small subrange of the San Juan Mountains in the southwestern part of Colorado, United States. They are located on the border between Montezuma and La Plata counties, about 12 miles (19 km) northwest of Durango. Their name is Spanish for silver.
Turret Peak is a high peak of the Needle Mountains, a subrange of the San Juan Mountains in the southwestern part of the US State of Colorado. It rises on the east side of the Animas River, 0.5 miles (0.80 km) southeast of Pigeon Peak. It is located in the Weminuche Wilderness, part of the San Juan National Forest.
The Sneffels Range, regionally conterminous with San Juans, is a young, prominent, and rugged range of mountains in southwestern Colorado of the San Juan Mountains. The Sneffels range form the southern border of Ouray County and run west to east.
Mount Richthofen is the highest summit of the Never Summer Mountains range of the Rocky Mountains of North America. The prominent 12,945-foot (3,946 m) peak is located 5.6 miles (9.0 km) northwest by west of Milner Pass, Colorado, United States, on the Continental Divide separating the Rocky Mountain National Park Wilderness in Rocky Mountain National Park and Grand County from Routt National Forest and Jackson County. The mountain was named in honor of pioneering German geologist Baron Ferdinand von Richthofen, apparently by Clarence King's 1870 survey team.
Arrow Peak is a high mountain summit in the Grenadier Range of the Rocky Mountains of North America. The 13,809-foot (4,209 m) thirteener is located in the Weminuche Wilderness of San Juan National Forest, 8.7 miles (14.0 km) south-southeast of the Town of Silverton in San Juan County, Colorado, United States.
The bedrock of Colorado was assembled from island arcs accreted onto the edge of the ancient Wyoming Craton. The Sonoma orogeny uplifted the ancestral Rocky Mountains in parallel with the diversification of multicellular life. Shallow seas covered the regions, followed by the uplift current Rocky Mountains and intense volcanic activity. Colorado has thick sedimentary sequences with oil, gas and coal deposits, as well as base metals and other minerals.
The Irving Formation is a Precambrian geologic formation found in the San Juan Mountains of southwest Colorado, US. It is thought to be Statherian in age
