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Published byCecilia Curtis Modified over 9 years ago
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Marci Allen
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Yellowstone National Park has a variety of elements that were discussed in class Not only is it a hot spot, as mentioned, but it is the home to volcanoes, earthquakes, hot pots, and wild fires. Note: All photographs were taken by Marci Allen unless indicated otherwise
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The Yellowstone Caldera is the largest volcanic system in North America Also known as “super volcano” The Caldera’s first eruption occurred 640,000 years ago Since then, there have been more than 80 eruptions A caldera is created when a magma chamber collapses, causing a massive eruption. There are no predictions of when the next eruption will occur.
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Yellowstone has 300 geysers (2/3 of the total geysers in the world) The most famous geyser is Old Faithful The largest geyser is the Steamboat Geyser Yellowstone contains 10,000 other geothermal features
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More than 137,000 eruptions have been recorded Shoots 3,700-8,400 gallons of water up to 185 feet Eruptions last 1.5-5 minutes Earthquakes have caused time between eruptions to increase In 1939 the average interval was 66.5 minutes but now the average is 90 minutes Old Faithful
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Yellowstone experiences thousands of small earthquakes each year There have been six earthquakes with a magnitude of 6 or higher In 1959 there was 7.5 earthquake that caused a landslide that broke a dam on Hebgen Lake, creating a new lake called Quake Lake 28 people died Caused geysers to erupt Hebgen Lake
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Lightening causes 35 fires each year People cause 6-10 fires each year Most fires burn about an acre of land before they burn out To reduce threats, controlled burns are performed In 1988 there was an extreme drought Seven fires burned 793,000 acres of land in just a few months More regulations and restrictions were created to prevent this from happening again Fire near Yellowstone in 2007
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