Castle Geyser Explained

Castle Geyser
Location:Upper Geyser Basin, Yellowstone National Park, Teton County, Wyoming
Coordinates:44.4634°N -110.8367°W
Elevation:7333feet
Hot Spring Type:Cone geyser
Height:90feet
Duration:20 minutes
Frequency:15 to 17 hours

Castle Geyser is a cone geyser in the Upper Geyser Basin of Yellowstone National Park. It is noted for the particularly large geyserite sinter deposits, which form its cone. These deposits have been likened in appearance to a castle.[1]

When the geyser was given this name in 1870, the top edges of the structure resembled the typical profile associated with the modern concept of a castle, having the appearance of a large keep, multiple turrets, and especially because of the crenellation along the top edges of what resembled its towers. As the drawing below shows the cone had distinctive appearance at the time. Over time the cone's shape changes because of the layers of mineral deposited in successive eruptions.

History

On September 18, 1870, the Washburn-Langford-Doane Expedition entered the Upper Geyser Basin. Eventually, members of the expedition named seven geysers they observed in the basin. The appearance of this geyser led Lieutenant Gustavus Cheyney Doane to name it Castle Geyser.[2] Nathaniel P. Langford gave this account in his 1871 Scribner's article:

"The Castle," situated on the summit of an incrusted mound, has a turreted crater through which a large volume of water is expelled at intervals of two or three hours to the height of, from a discharging orifice about NaN3 in diameter. The architectural features of the silicious sinter surrounding it, which is very massive and compact, indicating that at some former period the flow of water must have been much greater than at present, suggested its name. A vent near it is constantly discharging a large stream of boiling water, and when the geyser is in action the water in this vent boils and bubbles with great fierceness.[3]

Eruption

The Castle Geyser has a 16- to 17-hour eruption cycle. The geyser erupts hot water for about 20 minutes in a vertical column that reaches a height of before changing to a noisy steam phase that issues for 30 to 40 minutes.[4]

The sinter cone for Castle Geyser has been dated to around 1022 using carbon-14 dating. This date is much younger than the originally-presumed age of 5,000 to 15,000 years. A 3-D laser scan made of the cone reveals evidence that this geyser has evolved through four to five distinct stages to reach its current configuration.[5]

In November 2002, the Denali earthquake in Denali National Park and Preserve, Alaska caused Castle Geyser, as well as other geysers in Yellowstone, to decrease in eruption frequency.[6] The affected geysers have returned to their previous pattern since that time, however.

Gallery

Castle Geyser erupting, 2019.File:Castle Geyser erupting.jpgCastle Geyser erupting, 2019.File:Castle Geyser Erupting.jpgCastle Geyser erupting, 2017.File:Castle geyser with tourists.jpgc. 1952File:Castle geyser steam phase.jpgSteam phase in winter, 1961.File:Castle geyser sun 20190714 073700 1 crop.jpgThe sun behind Castle Geyser, 2019.File:Steam phase eruption of Castle Geyser with crepuscular rays and shadow.jpgSteam phase eruption. Crepuscular rays are also seen, 2008.File:Castle Geyser 2.jpg2005File:CastleGeyserCone-Jackson1872.jpgWilliam Henry Jackson, 1872. Crested Pool is in the foreground.File:Yellowstone-Castle Geyser Coye Aat02.jpgAnsel Adams, 1942.File:The Castle Geyser, Upper Geyser Park (Boston Public Library).jpgColor lithograph by Thomas Moran, 1874.File:CastleGeyser-Haynes1887.jpgJanuary 1887, F. Jay Haynes.

Notes and References

  1. Book: Langford, Nathaniel Pitt . The Discovery of Yellowstone Park; Diary of the Washburn Expedition to the Yellowstone and Firehole Rivers in the Year 1870 . Frank Jay Haynes . St. Paul, MN . 1905 . 123 .
  2. Book: Bauer, Clyde Max . Yellowstone Geysers . Yellowstone Park, Wyoming . Haynes . 1947 . 1517713.
  3. Langford . Nathaniel P. . Nathaniel P. Langford . May–June 1871 . The Wonders of the Yellowstone . Scribner's Monthly . II . 1–2 . 124.
  4. Web site: Castle Geyser . Old Faithful Area Tour . National Park Service.
  5. Web site: Foley . Duncan . How Does Your Geyser Grow? 3-D Laser Scanning and Preliminary 14C Dating of Castle Geyser, Upper Geyser Basin, Yellowstone National Park, Wyoming . Geological Society of America. Paper No. 11-11 . Rocky Mountain (56th Annual) and Cordilleran (100th Annual) Joint Meeting . May 3–5, 2004 .
  6. Web site: Quake in Alaska Changed Yellowstone Geysers . U News Center . University of Utah .