Main Terrace
The Main Terrace at Yellowstone National Park's Mammoth Hot Springs area. The area contains approximately 50 hot springs. It is subject to continual change as hot water flows to the earth's surface.
Calcium carbonate is also crucial to the terraces' growth. Thick layers of sedimentary limestone lie beneath the Mammoth area. As ground water seeps slowly downward and laterally, it comes in contact with hot gases charged with carbon dioxide rising from the magma chamber. Some carbon dioxide is readily dissolved in the hot water to form a weak carbonic acid solution. This hot, acidic solution dissolves great quantities of limestone as it works up through the rock layers to the surface hot springs. Once exposed to the open air, some of the carbon dioxide escapes from solution. As this happens, limestone can no longer remain in solution. A solid mineral reforms and is deposited as the travertine that forms the terraces--September 4, 2009
Main Terrace
The Main Terrace at Yellowstone National Park's Mammoth Hot Springs area. The area contains approximately 50 hot springs. It is subject to continual change as hot water flows to the earth's surface.
Calcium carbonate is also crucial to the terraces' growth. Thick layers of sedimentary limestone lie beneath the Mammoth area. As ground water seeps slowly downward and laterally, it comes in contact with hot gases charged with carbon dioxide rising from the magma chamber. Some carbon dioxide is readily dissolved in the hot water to form a weak carbonic acid solution. This hot, acidic solution dissolves great quantities of limestone as it works up through the rock layers to the surface hot springs. Once exposed to the open air, some of the carbon dioxide escapes from solution. As this happens, limestone can no longer remain in solution. A solid mineral reforms and is deposited as the travertine that forms the terraces--September 4, 2009