Terra Tower

Last updated
Terra Tower
Terra Tower.jpg
Northeast aspect
Highest point
Elevation 5,790 ft (1,760 m) [1]
Prominence 60 ft (18 m) [1]
Parent peak Black Ridge [1]
Isolation 3.76 mi (6.05 km) [1]
Coordinates 39°04′12″N108°40′40″W / 39.0699°N 108.6777°W / 39.0699; -108.6777
Geography
USA Colorado relief location map.svg
Red triangle with thick white border.svg
Terra Tower
Location in Colorado
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Terra Tower
Terra Tower (the United States)
CountryUnited States
State Colorado
County Mesa
Protected area Colorado National Monument
Parent range Colorado Plateau
Uncompahgre Plateau
Topo map USGS Colorado National Monument
Geology
Rock age Late Triassic to Early Jurassic [2]
Rock type Wingate Sandstone
Climbing
First ascent 1979
Easiest route class 5.11 climbing

Terra Tower is a 5,790-foot-elevation (1,760-meter) sandstone pillar located in Colorado National Monument, in Mesa County of western Colorado, United States. [3] This 350-foot-high tower is situated on the Redlands escarpment, approximately seven miles west of the community of Grand Junction. Topographic relief is significant as it rises 1,000 feet (300 meters) above the Tiara Rado Golf Course in approximately one-half mile. The first ascent of the summit was made in 1979 by Harvey Carter and Tom Merrill via the class 5.11 route, Way Bazaar.

Contents

Geology

This tower is the remnant of a differentially eroded fin composed primarily of cliff-forming Wingate Sandstone, which consists of wind-borne, cross-bedded quartzose sandstones deposited as ancient sand dunes approximately 200 million years ago in the Late Triassic. The caprock at the summit consists of fluvial sandstones of the resistant Kayenta Formation. The slope around the base of Terra Tower is Chinle Formation. [4] Precipitation runoff from this geographical feature drains to the Colorado River, approximately two miles to the northeast.

Climate

According to the Köppen climate classification system, Terra Tower is located in a semi-arid climate zone. [5] Summers are hot and dry, while winters are cold with some snow. Temperatures reach 100 °F (38 °C) on 5.3 days, 90 °F (32 °C) on 57 days, and remain at or below freezing on 13 days annually. April through October offer the most favorable weather to visit.

Climbing

Established rock climbing routes on Terra Tower: [6]

See also

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References

  1. 1 2 3 4 "Terra Tower - 5,790' CO". listsofjohn.com. Retrieved 2021-07-15.
  2. Geologic Formations, National Park Service
  3. Stewart M. Green, 2019, Rock Climbing Colorado A Guide to More Than 1,800 Routes, Falcon Guides, ISBN   9781493037353, page 463.
  4. Stanley William Lohman, The Geologic Story of Colorado National Monument, Geological Survey Bulletin 1508, pages 28-30.
  5. Peel, M. C.; Finlayson, B. L.; McMahon, T. A. (2007). "Updated world map of the Köppen−Geiger climate classification". Hydrol. Earth Syst. Sci. 11. ISSN   1027-5606.
  6. Stewart M. Green, 2019, Rock Climbing Colorado A Guide to More Than 1,800 Routes, Falcon Guides, ISBN   9781493037353, page 465.