Grizzly Fumarole

Grizzly Fumarole. . , Changing with the Seasons , All hydrothermal features change, but Grizzly Fumarole changes from day to day, and season to season, reflecting recent weather conditions., What is Hydrothermal? , Hydro = Water Thermal = Heat, During dry weather, steam rises from Grizzly Fumarole’s mostly dry vents, Rain or snow transforms the fumarole into mudpots. A single, large mudpot often appears in Spring., Mudpot or Fumarole? , A fumarole or steam vent’s underground system is nearly dry. Heated deep below the surface, the water turns to steam, the rises with other gasses., Mudpots are muddy springs. Microorganisms live in mudpots and convert hydrogen sulfide gas from Yellowstone’s magma chamber into sulfuric acid. This acid breaks rock and soil into mud. , < Sidebar: > , Yellowstone’s Hydrothermal Features. Rain and snow seep into the ground. Heated by Yellowstone’s magma chamber, the water rises to the surface as a geyser, hot spring, mudpot, or fumarole. , Underground water is heated by Yellowstone’s magma chamber. Extreme water pressure forces the super-heated water to rise.