The White River Plateau is a "broad structural

dome A dome () is an architectural element similar to the hollow upper half of a sphere. There is significant overlap with the term cupola, which may also refer to a dome or a structure on top of a dome. The precise definition of a dome has been a m ...

" located north of Glenwood Springs, Colorado and north of the

Colorado River The Colorado River ( es, Río Colorado) is one of the principal rivers (along with the Rio Grande) in the Southwestern United States and northern Mexico. The river drains an expansive, arid drainage basin, watershed that encompasses parts of ...

. Also called the White River Uplift, the mountainous area is shown on maps as being roughly circular in area, occupying parts of the Colorado counties of Garfield and Rio Blanco, with small portions extending into

Eagle Eagle is the common name for many large birds of prey of the family Accipitridae. Eagles belong to several groups of genera, some of which are closely related. Most of the 68 species of eagle are from Eurasia and Africa. Outside this area, just ...

and Routt counties. The Grand Hogback marks parts of the plateau's southern and western boundaries. The Flat Tops mountain range is part of the White River Plateau, and much of the plateau is located within the

White River National Forest White River National Forest is a United States National Forest, National Forest in northwest Colorado. It is named after the White River (Green River), White River that passes through its northern section. It is the most visited National Forest ...

. The summit of Blair Mountain, elevation , is the plateau's highest point.

Geology

The plateau forms part of the

Southern Rocky Mountains The Southern Rocky Mountains are a major subregion of the Rocky Mountains of North America located in the southeastern portion of the U.S. state of Wyoming, the central and western portions of Colorado, the northern portion of New Mexico, and ex ...

. It was created during the

Eocene The Eocene ( ) Epoch is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene' ...

, during the latter part of the

Laramide orogeny The Laramide orogeny was a time period of mountain building in western North America, which started in the Late Cretaceous, 70 to 80 million years ago, and ended 35 to 55 million years ago. The exact duration and ages of beginning and end of the o ...

References

Plateaus of the United States Mountain ranges of Colorado Landforms of Garfield County, Colorado Landforms of Rio Blanco County, Colorado {{colorado-geo-stub