- Castle Geyser
Castle Geyser is a
geyser inYellowstone National Park .The geyser has a 10-12 hour eruption cycle. The geyser erupts hot
water for about 20 minutes to a height of 90 feet (27 meters) before changing to a noisysteam phase for 30-40 minutes. [cite web | title=Castle Geyser | work= Old Faithful Area Tour | url=http://www.nps.gov/yell/tours/oldfaithful/castleg.htm | accessdate=2005-09-15 ]It is also noted for the particularly large
sinter deposits that form its cone. These have been likened in appearance to a castle. This appearance led Lieutenant G.C. Doane to name it Castle Geyser in1870 . [cite book | author=Bauer, Clyde Max | title=Yellowstone Geysers | location=Yellowstone Park, Wyoming | publisher=Haynes | year=1947 | id=ASIN B0007E44C4] The geyser is located in theUpper Geyser Basin a short walk fromOld Faithful Geyser .The sinter cone for Castle Geyser was dated to around
1022 usingcarbon-14 dating . This date is much younger than the presumed age of 5000 to 15000 years. A 3-D laser scan done of the cone shows evidence that this geyser has gone through four to five distinct stages to reach its current configuration. [Foley, Duncan. (2004). " [http://gsa.confex.com/gsa/2004RM/finalprogram/abstract_72329.htm 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 - Rocky Mountain (56th Annual) and Cordilleran (100th Annual) Joint Meeting (May 3–5, 2004)", 15]In
November 2002 , anearthquake inDenali National Park and Preserve ,Alaska caused Castle Geyser, as well as other geysers in Yellowstone, to decrease in eruption frequency. [cite web | title=Quake in Alaska Changed Yellowstone Geysers | work=University of Utah News and Relations | url=http://www.utah.edu/unews/releases/04/may/geysers.html | accessdate=2005-09-15 ] The affected geysers have since returned to their previous pattern.References
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