Castle Geyser (Castle Group, Upper Geyser Basin, Yellowstone Hotspot Volcano, northwestern Wyoming, USA).

Castle Geyser is the namesake & largest member of the Castle Group in Yellowstone’s Upper Geyser Basin. It has a large, gray, asymmetrical, terraced geyserite mound that is relatively old, estimated to be near-latest Pleistocene to mid-Holocene in age. Minor eruptions are water-phase only, and last less than 15 minutes. Major eruptions have a longer-than-15 minutes water phase, which gradually changes to a mixed water-steam phase and then a moderately noisy steam phase.

Tags:   Castle Group Upper Geyser Basin Yellowstone Wyoming geology geysers hot spring “hot springs” springs spring” “Upper Basin” “Castle Group” Castle Geyser

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Geysers are hot springs that episodically erupt columns of water. They occur in few places on Earth. The highest concentration of geysers anywhere is in Yellowstone’s Upper Geyser Basin (northwestern Wyoming, USA).

The Terra Cotta Geysers are a cluster of small geysers and hot springs on the southern banks of the Firehole River, just west of Dungeon Geyser and Slag Cone & just southwest of Deleted Teakettle Geyser. Near the center of the cluster is a vent surrounded by a grayish, slightly raised, undulating rim of pustulose to irregularly-surfaced geyserite - this is Terra Cotta A Geyser, the most active feature in the cluster. Proceeding counter-clockwise from Terra Cotta A Geyser are vents called Terra Cotta B Geyser (a.k.a. Dishpan Spring), Terra Cotta C Geyser (a.k.a. Washtub Spring), Terra Cotta D Geyser, Terra Cotta E Geyser, and Terra Cotta F Geyser. Other designated vents include Terra Cotta N, in the low vegetation just southeast of the main cluster, and Terra Cotta O, a series of small vents at the river’s edge.

Tags:   Castle Group Upper Geyser Basin Yellowstone Wyoming geology geysers hot spring springs hot spring hot springs Upper Geyser Basin Castle Group Castle Geyser Dungeon Dungeon Geyser Gizmo Gizmo Geyser Sprinkler Sprinkler Geyser Terra Cotta Terra Cotta Geysers Tortoise Shell Tortoise Shell Spring

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Castle Geyser (Castle Group, Upper Geyser Basin, Yellowstone Hotspot Volcano, northwestern Wyoming, USA).

Castle Geyser is the namesake & largest member of the Castle Group in Yellowstone’s Upper Geyser Basin. It has a large, gray, asymmetrical, terraced geyserite mound that is relatively old, estimated to be near-latest Pleistocene to mid-Holocene in age. Minor eruptions are water-phase only, and last less than 15 minutes. Major eruptions have a longer-than-15 minutes water phase, which gradually changes to a mixed water-steam phase and then a moderately noisy steam phase.

Tags:   Castle Group Upper Geyser Basin Yellowstone Wyoming geology geysers hot spring “hot springs” springs spring” “Upper Basin” “Castle Group” Castle Geyser

g Some Rights Reserved

Castle Geyser (Castle Group, Upper Geyser Basin, Yellowstone Hotspot Volcano, northwestern Wyoming, USA).

Castle Geyser is the namesake & largest member of the Castle Group in Yellowstone’s Upper Geyser Basin. It has a large, gray, asymmetrical, terraced geyserite mound that is relatively old, estimated to be near-latest Pleistocene to mid-Holocene in age. Minor eruptions are water-phase only, and last less than 15 minutes. Major eruptions have a longer-than-15 minutes water phase, which gradually changes to a mixed water-steam phase and then a moderately noisy steam phase.

Tags:   Castle Group Upper Geyser Basin Yellowstone Wyoming geology geysers hot spring “hot springs” springs spring” “Upper Basin” “Castle Group” Castle Geyser

g Some Rights Reserved

Castle Geyser (Castle Group, Upper Geyser Basin, Yellowstone Hotspot Volcano, northwestern Wyoming, USA).

Castle Geyser is the namesake & largest member of the Castle Group in Yellowstone’s Upper Geyser Basin. It has a large, gray, asymmetrical, terraced geyserite mound that is relatively old, estimated to be near-latest Pleistocene to mid-Holocene in age. Minor eruptions are water-phase only, and last less than 15 minutes. Major eruptions have a longer-than-15 minutes water phase, which gradually changes to a mixed water-steam phase and then a moderately noisy steam phase.

Tags:   Castle Group Upper Geyser Basin Yellowstone Wyoming geology geysers hot spring “hot springs” springs spring” “Upper Basin” “Castle Group” Castle Geyser

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