Marathon Uplift
The Marathon Uplift is a Paleogene-age domal uplift, approximately 78 miles (126 km) in diameter, in southwest Texas.[1] The Marathon Basin was created by erosion of Cretaceous and younger strata from the crest of the uplift.
| Marathon Uplift | |
|---|---|
 Exposed ridges of the Ouachita orogeny trend northeast near Marathon, Texas. | |
| Geography | |
  Location of Marathon Uplift in Texas | |
| Country | United States |
| State | Texas |
| District | Brewster County |
| Range coordinates | 30°12′27″N 103°14′36″W |
| Geology | |
| Mountain type | Uplift |
Northeast trending ridges of pre-Permian Paleozoic strata in the basin were formed by the Ouachita orogeny, which also formed the Ouachita Mountains of Arkansas and Oklahoma.
The ancient faulting that produced the Llano Uplift is believed to be related to that which produced the Marathon Uplift in west Texas. Both may have been formed around the time of the Ouachita orogeny.
See also
References
- McBride, Earle F. (1998). "Geology of the Marathon Uplift, west Texas" (PDF). Geological Society of America Centennial Field Guide—South-Central Section.
Novaculite flatirons in the Marathon Uplift
Municipalities and communities of Brewster County, Texas, United States | ||
|---|---|---|
| City |  Brewster County map | |
| CDPs | ||
| Other unincorporated communities | ||
| Ghost towns | ||
| Annexed former counties | ||
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