Economic Geyser Crater
Encyclopedia
Economic Geyser is a geyser
Geyser
A geyser is a spring characterized by intermittent discharge of water ejected turbulently and accompanied by a vapour phase . The word geyser comes from Geysir, the name of an erupting spring at Haukadalur, Iceland; that name, in turn, comes from the Icelandic verb geysa, "to gush", the verb...

 in the Upper Geyser Basin of Yellowstone National Park
Yellowstone National Park
Yellowstone National Park, established by the U.S. Congress and signed into law by President Ulysses S. Grant on March 1, 1872, is a national park located primarily in the U.S. state of Wyoming, although it also extends into Montana and Idaho...

 in the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

.

Economic Geyser is small, usually inactive geyser located between the Giant Geyser
Giant Geyser
Giant Geyser is a cone-type geyser in the Upper Geyser Basin of Yellowstone National Park in the United States. Giant Geyser is the namesake for the Giant Group of geysers, which includes Bijou Geyser, Giant Geyser, Giantess Geyser and Mastiff Geyser. Giant Geyser is also the namesake for the Giant...

 group and the Grand Geyser
Grand Geyser
Grand Geyser is a fountain geyser in the Upper Geyser Basin of Yellowstone National Park in the United States. It is the tallest predictable geyser known. It was named by Dr. F.V. Hayden in 1871.-Eruptions:...

 group. Economic Geyser was once a popular, frequently-erupting geyser until it became essentially dormant in the 1920s.

Economic Geyser is believed to be named for its behavior during its active days. It is reported that most of the water ejected drained back into the vent after the eruption, thus making the geyser appear to conserve its water. It was most likely named by Frank Jay Haynes
Frank Jay Haynes
Frank Jay Haynes , known as F. Jay or the Professor, to almost all that knew him, was a professional photographer, publisher and entrepreneur from Minnesota who played a major role in documenting through photographs, the settlement and early history of the great Northwest...

, the park photographer from 1883-1916.

The temperature of the water in geyser pools and other geothermal features can be judged by the color of the bacteria living in the water. Changes in the size and color of bacteria mats at Economic Geyser imply that the geyser is heating up. Photographs of the geyser vent taken in the 1990s show a quiet pool very dark with algae. Photographs of the vent taken in 2006 show a pool of clear water with traces of the bacterial colors associated with higher temperatures.
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