Earth:Sinking Ship (Grand Canyon)

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Short description: Landform in the Grand Canyon, Arizona
Sinking Ship
Grand Canyon National Park - Kaibab Formation - Sinking Ship.jpg
Sinking Ship, aka Three Castles
Highest point
Elevation7,344 ft (2,238 m) [1]
Prominence304 ft (93 m) [1]
Parent peakGrandview Benchmark (7,530 ft)[2]
Isolation2.30 mi (3.70 km) [2]
Coordinates [ ⚑ ] : 35°59′26″N 111°57′32″W / 35.9906736°N 111.9588054°W / 35.9906736; -111.9588054 [3]
Geography
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LocationGrand Canyon National Park
Coconino County, Arizona, US
Parent rangeCoconino Plateau[1]
Colorado Plateau
Topo mapUSGS Grandview Point
Geology
Type of rocklimestone, sandstone, mudstone
Climbing
Easiest routeclass 4 scrambling[2]

Sinking Ship is a 7,344-foot (2,238 m) elevation summit located in the Grand Canyon, in Coconino County of northern Arizona, United States.[3] This butte is situated 1.7 miles (2.7 km) southeast of the Grandview Point overlook on the canyon's South Rim, and 1.25 miles (2.01 km) southwest of Coronado Butte. Topographic relief is significant as it rises 4,800 feet (1,500 m) above the Colorado River in 4 miles (6.4 km). According to the Köppen climate classification system, Sinking Ship is located in a cold semi-arid climate zone.[4]

Etymology

This geographical feature was named "Three Castles" before its present name was officially adopted in 1932 by the U.S. Board on Geographic Names.[3] The descriptive name is because the dip or tilt of the strata, caused by bending movement of the rock, creates the appearance of a ship sinking into the canyon.[5] The name is attributable to M. R. (Miner Raymond) Tillotson (1886–1955), superintendent of Grand Canyon National Park from 1922 to 1938.[6][7]

Geology

The summit of Sinking Ship is composed of Kaibab Limestone caprock overlaying cream-colored, cliff-forming, Permian Coconino Sandstone.[8] The sandstone, which is the third-youngest of the strata in the Grand Canyon, was deposited 265 million years ago as sand dunes. Below the Coconino Sandstone is slope-forming, Permian Hermit Formation, which in turn overlays the Pennsylvanian-Permian Supai Group. Further down are strata of Mississippian Redwall Limestone, and Cambrian Tonto Group.[9] Whereas most strata of the Grand Canyon are normally horizontal, at Sinking Ship the strata have been shifted by the Cremation Fault and a monocline. This Precambrian fault was dormant until reawakened during the Laramide orogeny. The eastward tilt of Sinking Ship is due to its position astride the axis of the Grandview-Phantom monocline.[10][11] Precipitation runoff from Sinking Ship drains north into the nearby Colorado River via Hance Creek.

Gallery

  • Sunset illuminating Sinking Ship

  • West aspect from Grandview Point

  • From the southeast.

  • Sinking Ship, looking like "Three Castles"

  • Coronado Butte centered, with Sinking Ship to left and shaded.

See also

References

  1. ↑ 1.0 1.1 1.2 "Sinking Ship, Arizona". http://www.peakbagger.com/peak.aspx?pid=37696. 
  2. ↑ 2.0 2.1 2.2 "Sinking Ship – 7,344' AZ". https://listsofjohn.com/peak/71837. 
  3. ↑ 3.0 3.1 3.2 "Sinking Ship". United States Geological Survey. https://geonames.usgs.gov/apex/f?p=gnispq:3:::NO::P3_FID:11362. 
  4. ↑ 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. 
  5. ↑ Desert View Drive in Grand Canyon National Park, US Department of the Interior, page 6.
  6. ↑ What's in a name?, National Park Service
  7. ↑ Gregory McNamee, Grand Canyon Place Names, 1997, Mountaineers Publisher, ISBN:9780898865332, page 102.
  8. ↑ N.H. Darton, Story of the Grand Canyon of Arizona, 1917.
  9. ↑ William Kenneth Hamblin, Anatomy of the Grand Canyon: Panoramas of the Canyon's Geology, 2008, Grand Canyon Association Publisher, ISBN:9781934656013.
  10. ↑ Lon Abbott and Terri Cook, Hiking the Grand Canyon's Geology, 2004, The Mountaineers Books, ISBN:9780898868951, page 109.
  11. ↑ J. Keith Rigby, Southern Colorado Plateau: Field Guide, Kendall/Hunt Publishing Company, 1977, page 39.

External links



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